[kernel] Add InvalidExpression.expression

... and use this to wrap expressions instead of Let

TEST=existing

Change-Id: I6d1f5cfa4693222840d6cb406790c39c6ae63e5d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/208580
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>

pkg/front_end/lib/src/fasta/kernel/body_builder.dart

@@ -6094,7 +6094,9 @@ class BodyBuilder extends ScopeListener<JumpTarget>
 
   @override
   Expression buildProblem(Message message, int charOffset, int length,
-      {List<LocatedMessage>? context, bool suppressMessage: false}) {
+      {List<LocatedMessage>? context,
+      bool suppressMessage: false,
+      Expression? expression}) {
     if (!suppressMessage) {
       addProblem(message, charOffset, length,
           wasHandled: true, context: context);
@@ -6102,9 +6104,7 @@ class BodyBuilder extends ScopeListener<JumpTarget>
     String text = libraryBuilder.loader.target.context
         .format(message.withLocation(uri, charOffset, length), Severity.error)
         .plain;
-    InvalidExpression expression = new InvalidExpression(text)
-      ..fileOffset = charOffset;
-    return expression;
+    return new InvalidExpression(text, expression)..fileOffset = charOffset;
   }
 
   @override
@@ -6131,15 +6131,9 @@ class BodyBuilder extends ScopeListener<JumpTarget>
     if (offset == -1) {
       offset = message.charOffset;
     }
-    return new Let(
-        new VariableDeclaration.forValue(
-            buildProblem(
-                message.messageObject, message.charOffset, message.length,
-                context: context),
-            type: NeverType.fromNullability(libraryBuilder.nonNullable))
-          ..fileOffset = offset,
-        expression)
-      ..fileOffset = offset;
+    return buildProblem(
+        message.messageObject, message.charOffset, message.length,
+        context: context, expression: expression);
   }
 
   Expression buildFallThroughError(int charOffset) {

pkg/front_end/lib/src/fasta/kernel/inference_visitor.dart

@@ -334,9 +334,13 @@ class InferenceVisitor
   @override
   ExpressionInferenceResult visitInvalidExpression(
       InvalidExpression node, DartType typeContext) {
-    // TODO(johnniwinther): The inferred type should be an InvalidType. Using
-    // BottomType leads to cascading errors so we use DynamicType for now.
-    return new ExpressionInferenceResult(const DynamicType(), node);
+    if (node.expression != null) {
+      ExpressionInferenceResult result = inferrer.inferExpression(
+          node.expression!, typeContext, !inferrer.isTopLevel,
+          isVoidAllowed: true);
+      node.expression = result.expression..parent = node;
+    }
+    return new ExpressionInferenceResult(const InvalidType(), node);
   }
 
   @override

pkg/front_end/lib/src/fasta/type_inference/inference_helper.dart

@@ -16,7 +16,9 @@ abstract class InferenceHelper {
   set transformSetLiterals(bool value);
 
   Expression buildProblem(Message message, int charOffset, int length,
-      {List<LocatedMessage>? context, bool suppressMessage = false});
+      {List<LocatedMessage>? context,
+      bool suppressMessage = false,
+      Expression? expression});
 
   LocatedMessage? checkArgumentsForType(
       FunctionType function, Arguments arguments, int offset,

pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart.strong.expect

@@ -78,7 +78,7 @@ Try removing the return type.
     return Simple2(this.name);
     ^";
 static const field self::B var3 = invalid-expression "This assertion failed.";
-static const field dynamic var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
+static const field invalid-type var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
 Try using a constructor or factory that is 'const'.
 const var4 = C();
              ^";

pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart.strong.transformed.expect

@@ -78,7 +78,7 @@ Try removing the return type.
     return Simple2(this.name);
     ^";
 static const field self::B var3 = invalid-expression "This assertion failed.";
-static const field dynamic var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
+static const field invalid-type var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
 Try using a constructor or factory that is 'const'.
 const var4 = C();
              ^";

pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart.weak.expect

@@ -78,7 +78,7 @@ Try removing the return type.
     return Simple2(this.name);
     ^";
 static const field self::B var3 = invalid-expression "This assertion failed.";
-static const field dynamic var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
+static const field invalid-type var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
 Try using a constructor or factory that is 'const'.
 const var4 = C();
              ^";

pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart.weak.outline.expect

@@ -43,7 +43,7 @@ static const field core::String printString = "print";
 static const field self::Simple var1 = const self::Simple::•(self::printString);
 static const field self::Simple2 var2 = const self::Simple2::•(self::printString);
 static const field self::B var3 = const self::B::•();
-static const field dynamic var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
+static const field invalid-type var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
 Try using a constructor or factory that is 'const'.
 const var4 = C();
              ^";

pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart.weak.transformed.expect

@@ -78,7 +78,7 @@ Try removing the return type.
     return Simple2(this.name);
     ^";
 static const field self::B var3 = invalid-expression "This assertion failed.";
-static const field dynamic var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
+static const field invalid-type var4 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_const_ctor_error.dart:41:14: Error: Cannot invoke a non-'const' constructor where a const expression is expected.
 Try using a constructor or factory that is 'const'.
 const var4 = C();
              ^";

pkg/front_end/testcases/const_functions/const_functions_list_error.dart.strong.expect

@@ -107,7 +107,7 @@ static method getWithIndexExceptionFn2() → core::int {
   return (#C5).{core::List::[]}(1.{core::int::unary-}(){() → core::int}){(core::int) → core::int};
 }
 static method getWithIndexExceptionFn3() → core::int {
-  return (#C5).{core::List::[]}(let final Never #t1 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_list_error.dart:54:12: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
+  return (#C5).{core::List::[]}(invalid-expression "pkg/front_end/testcases/const_functions/const_functions_list_error.dart:54:12: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
   return x[0.1];
            ^" in 0.1 as{TypeError,ForNonNullableByDefault} core::int){(core::int) → core::int};
 }

pkg/front_end/testcases/const_functions/const_functions_list_error.dart.strong.transformed.expect

@@ -107,7 +107,7 @@ static method getWithIndexExceptionFn2() → core::int {
   return (#C5).{core::List::[]}(1.{core::int::unary-}(){() → core::int}){(core::int) → core::int};
 }
 static method getWithIndexExceptionFn3() → core::int {
-  return (#C5).{core::List::[]}(let final Never #t1 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_list_error.dart:54:12: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
+  return (#C5).{core::List::[]}(invalid-expression "pkg/front_end/testcases/const_functions/const_functions_list_error.dart:54:12: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
   return x[0.1];
            ^" in 0.1 as{TypeError,ForNonNullableByDefault} core::int){(core::int) → core::int};
 }
@@ -127,4 +127,4 @@ constants  {
 
 Extra constant evaluation status:
 Evaluated: InstanceInvocation @ org-dartlang-testcase:///const_functions_list_error.dart:48:12 -> IntConstant(-1)
-Extra constant evaluation: evaluated: 11, effectively constant: 1
+Extra constant evaluation: evaluated: 9, effectively constant: 1

pkg/front_end/testcases/const_functions/const_functions_list_error.dart.weak.expect

@@ -107,7 +107,7 @@ static method getWithIndexExceptionFn2() → core::int {
   return (#C5).{core::List::[]}(1.{core::int::unary-}(){() → core::int}){(core::int) → core::int};
 }
 static method getWithIndexExceptionFn3() → core::int {
-  return (#C5).{core::List::[]}(let final Never #t1 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_list_error.dart:54:12: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
+  return (#C5).{core::List::[]}(invalid-expression "pkg/front_end/testcases/const_functions/const_functions_list_error.dart:54:12: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
   return x[0.1];
            ^" in 0.1 as{TypeError,ForNonNullableByDefault} core::int){(core::int) → core::int};
 }

pkg/front_end/testcases/const_functions/const_functions_list_error.dart.weak.transformed.expect

@@ -107,7 +107,7 @@ static method getWithIndexExceptionFn2() → core::int {
   return (#C5).{core::List::[]}(1.{core::int::unary-}(){() → core::int}){(core::int) → core::int};
 }
 static method getWithIndexExceptionFn3() → core::int {
-  return (#C5).{core::List::[]}(let final Never #t1 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_list_error.dart:54:12: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
+  return (#C5).{core::List::[]}(invalid-expression "pkg/front_end/testcases/const_functions/const_functions_list_error.dart:54:12: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
   return x[0.1];
            ^" in 0.1 as{TypeError,ForNonNullableByDefault} core::int){(core::int) → core::int};
 }
@@ -127,4 +127,4 @@ constants  {
 
 Extra constant evaluation status:
 Evaluated: InstanceInvocation @ org-dartlang-testcase:///const_functions_list_error.dart:48:12 -> IntConstant(-1)
-Extra constant evaluation: evaluated: 11, effectively constant: 1
+Extra constant evaluation: evaluated: 9, effectively constant: 1

pkg/front_end/testcases/const_functions/const_functions_string_error.dart.strong.expect

@@ -57,7 +57,7 @@ static method fn2() → dynamic {
 }
 static method fn3() → dynamic {
   core::String s = "str";
-  return (#C1).{core::String::[]}(let final Never #t1 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_string_error.dart:28:14: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
+  return (#C1).{core::String::[]}(invalid-expression "pkg/front_end/testcases/const_functions/const_functions_string_error.dart:28:14: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
   return str[1.1];
              ^" in 1.1 as{TypeError,ForNonNullableByDefault} core::int){(core::int) → core::String};
 }

pkg/front_end/testcases/const_functions/const_functions_string_error.dart.strong.transformed.expect

@@ -57,7 +57,7 @@ static method fn2() → dynamic {
 }
 static method fn3() → dynamic {
   core::String s = "str";
-  return (#C1).{core::String::[]}(let final Never #t1 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_string_error.dart:28:14: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
+  return (#C1).{core::String::[]}(invalid-expression "pkg/front_end/testcases/const_functions/const_functions_string_error.dart:28:14: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
   return str[1.1];
              ^" in 1.1 as{TypeError,ForNonNullableByDefault} core::int){(core::int) → core::String};
 }
@@ -69,4 +69,4 @@ constants  {
 
 Extra constant evaluation status:
 Evaluated: InstanceInvocation @ org-dartlang-testcase:///const_functions_string_error.dart:16:14 -> IntConstant(-1)
-Extra constant evaluation: evaluated: 6, effectively constant: 1
+Extra constant evaluation: evaluated: 4, effectively constant: 1

pkg/front_end/testcases/const_functions/const_functions_string_error.dart.weak.expect

@@ -57,7 +57,7 @@ static method fn2() → dynamic {
 }
 static method fn3() → dynamic {
   core::String s = "str";
-  return (#C1).{core::String::[]}(let final Never #t1 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_string_error.dart:28:14: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
+  return (#C1).{core::String::[]}(invalid-expression "pkg/front_end/testcases/const_functions/const_functions_string_error.dart:28:14: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
   return str[1.1];
              ^" in 1.1 as{TypeError,ForNonNullableByDefault} core::int){(core::int) → core::String};
 }

pkg/front_end/testcases/const_functions/const_functions_string_error.dart.weak.transformed.expect

@@ -57,7 +57,7 @@ static method fn2() → dynamic {
 }
 static method fn3() → dynamic {
   core::String s = "str";
-  return (#C1).{core::String::[]}(let final Never #t1 = invalid-expression "pkg/front_end/testcases/const_functions/const_functions_string_error.dart:28:14: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
+  return (#C1).{core::String::[]}(invalid-expression "pkg/front_end/testcases/const_functions/const_functions_string_error.dart:28:14: Error: A value of type 'double' can't be assigned to a variable of type 'int'.
   return str[1.1];
              ^" in 1.1 as{TypeError,ForNonNullableByDefault} core::int){(core::int) → core::String};
 }
@@ -69,4 +69,4 @@ constants  {
 
 Extra constant evaluation status:
 Evaluated: InstanceInvocation @ org-dartlang-testcase:///const_functions_string_error.dart:16:14 -> IntConstant(-1)
-Extra constant evaluation: evaluated: 6, effectively constant: 1
+Extra constant evaluation: evaluated: 4, effectively constant: 1

pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart.strong.expect

@@ -16,7 +16,7 @@ import self as self;
 import "dart:core" as core;
 
 static field <T extends core::Object? = dynamic>(T%) → T% funcValue = #C1;
-static field (core::int) → core::int f = let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart:7:33: Error: A value of type 'T Function<T>(T)' can't be assigned to a variable of type 'int Function(int)'.
+static field (core::int) → core::int f = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart:7:33: Error: A value of type 'T Function<T>(T)' can't be assigned to a variable of type 'int Function(int)'.
 int Function(int) f = funcValue.call; // Disallowed!
                                 ^" in self::funcValue.call as{TypeError,ForNonNullableByDefault} (core::int) → core::int;
 static field (core::int) → core::int g = self::funcValue.call<core::int>;

pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart.strong.transformed.expect

@@ -10,7 +10,7 @@ import self as self;
 import "dart:core" as core;
 
 static field <T extends core::Object? = dynamic>(T%) → T% funcValue = #C1;
-static field (core::int) → core::int f = let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart:7:33: Error: A value of type 'T Function<T>(T)' can't be assigned to a variable of type 'int Function(int)'.
+static field (core::int) → core::int f = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart:7:33: Error: A value of type 'T Function<T>(T)' can't be assigned to a variable of type 'int Function(int)'.
 int Function(int) f = funcValue.call; // Disallowed!
                                 ^" in self::funcValue.call as{TypeError,ForNonNullableByDefault} (core::int) → core::int;
 static method func<T extends core::Object? = dynamic>(self::func::T% value) → self::func::T%

pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart.weak.expect

@@ -16,7 +16,7 @@ import self as self;
 import "dart:core" as core;
 
 static field <T extends core::Object? = dynamic>(T%) → T% funcValue = #C1;
-static field (core::int) → core::int f = let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart:7:33: Error: A value of type 'T Function<T>(T)' can't be assigned to a variable of type 'int Function(int)'.
+static field (core::int) → core::int f = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart:7:33: Error: A value of type 'T Function<T>(T)' can't be assigned to a variable of type 'int Function(int)'.
 int Function(int) f = funcValue.call; // Disallowed!
                                 ^" in self::funcValue.call as{TypeError,ForNonNullableByDefault} (core::int) → core::int;
 static field (core::int) → core::int g = self::funcValue.call<core::int>;

pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart.weak.transformed.expect

@@ -10,7 +10,7 @@ import self as self;
 import "dart:core" as core;
 
 static field <T extends core::Object? = dynamic>(T%) → T% funcValue = #C1;
-static field (core::int) → core::int f = let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart:7:33: Error: A value of type 'T Function<T>(T)' can't be assigned to a variable of type 'int Function(int)'.
+static field (core::int) → core::int f = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/call_instantiation.dart:7:33: Error: A value of type 'T Function<T>(T)' can't be assigned to a variable of type 'int Function(int)'.
 int Function(int) f = funcValue.call; // Disallowed!
                                 ^" in self::funcValue.call as{TypeError,ForNonNullableByDefault} (core::int) → core::int;
 static method func<T extends core::Object? = dynamic>(self::func::T% value) → self::func::T%

pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart.strong.expect

@@ -70,21 +70,21 @@ class A<X extends core::Object? = dynamic> extends core::Object {
 static method test1() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
   return #C1;
 static method test2() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:13:32: Error: A value of type 'A<X/*1*/> Function<X>(X/*1*/, int)' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:13:32: Error: A value of type 'A<X/*1*/> Function<X>(X/*1*/, int)' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.
 A<X> Function<X>(X) test2() => A.foo2; // Error.
                                ^" in (#C2) as{TypeError,ForNonNullableByDefault} Never;
 static method test3() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:14:32: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:14:32: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.
 A<X> Function<X>(X) test3() => A.new; // Error.
                                ^" in (#C3) as{TypeError,ForNonNullableByDefault} Never;
 static method test4() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:15:32: Error: A value of type 'A<int> Function()' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:15:32: Error: A value of type 'A<int> Function()' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test4() => A<int>.new; // Error.
                                ^" in (#C4) as{TypeError,ForNonNullableByDefault} Never;
@@ -94,7 +94,7 @@ Try removing the extra type arguments.
 A<X> Function<X>(X) test5() => A<int, String>.new; // Error.
                                ^";
 static method test6() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:17:32: Error: A value of type 'A<int> Function(int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:17:32: Error: A value of type 'A<int> Function(int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test6() => A<int>.foo1; // Error.
                                ^" in (#C5) as{TypeError,ForNonNullableByDefault} Never;
@@ -104,7 +104,7 @@ Try removing the extra type arguments.
 A<X> Function<X>(X) test7() => A<int, String>.foo1; // Error.
                                ^";
 static method test8() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:19:32: Error: A value of type 'A<int> Function(int, int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:19:32: Error: A value of type 'A<int> Function(int, int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test8() => A<int>.foo2; // Error.
                                ^" in (#C6) as{TypeError,ForNonNullableByDefault} Never;
@@ -116,7 +116,7 @@ A<X> Function<X>(X) test9() => A<int, String>.foo2; // Error.
 static method test10() → <X extends core::Object? = dynamic>() → self::A<X%>
   return #C7;
 static method test11() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:22:33: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:22:33: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.

pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart.strong.transformed.expect

@@ -70,21 +70,21 @@ class A<X extends core::Object? = dynamic> extends core::Object {
 static method test1() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
   return #C1;
 static method test2() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:13:32: Error: A value of type 'A<X/*1*/> Function<X>(X/*1*/, int)' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:13:32: Error: A value of type 'A<X/*1*/> Function<X>(X/*1*/, int)' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.
 A<X> Function<X>(X) test2() => A.foo2; // Error.
                                ^" in (#C2) as{TypeError,ForNonNullableByDefault} Never;
 static method test3() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:14:32: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:14:32: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.
 A<X> Function<X>(X) test3() => A.new; // Error.
                                ^" in (#C3) as{TypeError,ForNonNullableByDefault} Never;
 static method test4() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:15:32: Error: A value of type 'A<int> Function()' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:15:32: Error: A value of type 'A<int> Function()' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test4() => A<int>.new; // Error.
                                ^" in (#C4) as{TypeError,ForNonNullableByDefault} Never;
@@ -94,7 +94,7 @@ Try removing the extra type arguments.
 A<X> Function<X>(X) test5() => A<int, String>.new; // Error.
                                ^";
 static method test6() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:17:32: Error: A value of type 'A<int> Function(int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:17:32: Error: A value of type 'A<int> Function(int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test6() => A<int>.foo1; // Error.
                                ^" in (#C5) as{TypeError,ForNonNullableByDefault} Never;
@@ -104,7 +104,7 @@ Try removing the extra type arguments.
 A<X> Function<X>(X) test7() => A<int, String>.foo1; // Error.
                                ^";
 static method test8() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:19:32: Error: A value of type 'A<int> Function(int, int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:19:32: Error: A value of type 'A<int> Function(int, int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test8() => A<int>.foo2; // Error.
                                ^" in (#C6) as{TypeError,ForNonNullableByDefault} Never;
@@ -116,7 +116,7 @@ A<X> Function<X>(X) test9() => A<int, String>.foo2; // Error.
 static method test10() → <X extends core::Object? = dynamic>() → self::A<X%>
   return #C7;
 static method test11() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:22:33: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:22:33: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.

pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart.weak.expect

@@ -70,21 +70,21 @@ class A<X extends core::Object? = dynamic> extends core::Object {
 static method test1() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
   return #C1;
 static method test2() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:13:32: Error: A value of type 'A<X/*1*/> Function<X>(X/*1*/, int)' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:13:32: Error: A value of type 'A<X/*1*/> Function<X>(X/*1*/, int)' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.
 A<X> Function<X>(X) test2() => A.foo2; // Error.
                                ^" in (#C2) as{TypeError,ForNonNullableByDefault} Never;
 static method test3() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:14:32: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:14:32: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.
 A<X> Function<X>(X) test3() => A.new; // Error.
                                ^" in (#C3) as{TypeError,ForNonNullableByDefault} Never;
 static method test4() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:15:32: Error: A value of type 'A<int> Function()' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:15:32: Error: A value of type 'A<int> Function()' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test4() => A<int>.new; // Error.
                                ^" in (#C4) as{TypeError,ForNonNullableByDefault} Never;
@@ -94,7 +94,7 @@ Try removing the extra type arguments.
 A<X> Function<X>(X) test5() => A<int, String>.new; // Error.
                                ^";
 static method test6() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:17:32: Error: A value of type 'A<int> Function(int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:17:32: Error: A value of type 'A<int> Function(int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test6() => A<int>.foo1; // Error.
                                ^" in (#C5) as{TypeError,ForNonNullableByDefault} Never;
@@ -104,7 +104,7 @@ Try removing the extra type arguments.
 A<X> Function<X>(X) test7() => A<int, String>.foo1; // Error.
                                ^";
 static method test8() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:19:32: Error: A value of type 'A<int> Function(int, int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:19:32: Error: A value of type 'A<int> Function(int, int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test8() => A<int>.foo2; // Error.
                                ^" in (#C6) as{TypeError,ForNonNullableByDefault} Never;
@@ -116,7 +116,7 @@ A<X> Function<X>(X) test9() => A<int, String>.foo2; // Error.
 static method test10() → <X extends core::Object? = dynamic>() → self::A<X%>
   return #C7;
 static method test11() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:22:33: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:22:33: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.

pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart.weak.transformed.expect

@@ -70,21 +70,21 @@ class A<X extends core::Object? = dynamic> extends core::Object {
 static method test1() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
   return #C1;
 static method test2() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:13:32: Error: A value of type 'A<X/*1*/> Function<X>(X/*1*/, int)' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:13:32: Error: A value of type 'A<X/*1*/> Function<X>(X/*1*/, int)' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.
 A<X> Function<X>(X) test2() => A.foo2; // Error.
                                ^" in (#C2) as{TypeError,ForNonNullableByDefault} Never;
 static method test3() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:14:32: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:14:32: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.
 A<X> Function<X>(X) test3() => A.new; // Error.
                                ^" in (#C3) as{TypeError,ForNonNullableByDefault} Never;
 static method test4() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:15:32: Error: A value of type 'A<int> Function()' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:15:32: Error: A value of type 'A<int> Function()' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test4() => A<int>.new; // Error.
                                ^" in (#C4) as{TypeError,ForNonNullableByDefault} Never;
@@ -94,7 +94,7 @@ Try removing the extra type arguments.
 A<X> Function<X>(X) test5() => A<int, String>.new; // Error.
                                ^";
 static method test6() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:17:32: Error: A value of type 'A<int> Function(int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:17:32: Error: A value of type 'A<int> Function(int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test6() => A<int>.foo1; // Error.
                                ^" in (#C5) as{TypeError,ForNonNullableByDefault} Never;
@@ -104,7 +104,7 @@ Try removing the extra type arguments.
 A<X> Function<X>(X) test7() => A<int, String>.foo1; // Error.
                                ^";
 static method test8() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:19:32: Error: A value of type 'A<int> Function(int, int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:19:32: Error: A value of type 'A<int> Function(int, int)' can't be returned from a function with return type 'A<X> Function<X>(X)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
 A<X> Function<X>(X) test8() => A<int>.foo2; // Error.
                                ^" in (#C6) as{TypeError,ForNonNullableByDefault} Never;
@@ -116,7 +116,7 @@ A<X> Function<X>(X) test9() => A<int, String>.foo2; // Error.
 static method test10() → <X extends core::Object? = dynamic>() → self::A<X%>
   return #C7;
 static method test11() → <X extends core::Object? = dynamic>(X%) → self::A<X%>
-  return let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:22:33: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart:22:33: Error: A value of type 'A<X/*1*/> Function<X>()' can't be returned from a function with return type 'A<X/*2*/> Function<X>(X/*2*/)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/generic_tearoff_with_context.dart'.
  - 'X/*1*/' is from 'unknown'.
  - 'X/*2*/' is from 'unknown'.

pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.strong.expect

@@ -45,7 +45,7 @@ static method testInferred() → dynamic {
   self::Class1 c1a = f1a(0){(core::int) → self::Class1};
   self::expect(true, c1a is{ForNonNullableByDefault} self::Class1);
   () → Null {
-    f1a(let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f1a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f1a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class1};
   };
@@ -59,7 +59,7 @@ static method testInferred() → dynamic {
   self::Class2 c2a = f2a(0){(core::int) → self::Class2};
   self::expect(true, c2a is{ForNonNullableByDefault} self::Class2);
   () → Null {
-    f2a(let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f2a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f2a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class2};
   };

pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.strong.transformed.expect

@@ -45,7 +45,7 @@ static method testInferred() → dynamic {
   self::Class1 c1a = f1a(0){(core::int) → self::Class1};
   self::expect(true, c1a is{ForNonNullableByDefault} self::Class1);
   () → Null {
-    f1a(let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f1a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f1a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class1};
   };
@@ -59,7 +59,7 @@ static method testInferred() → dynamic {
   self::Class2 c2a = f2a(0){(core::int) → self::Class2};
   self::expect(true, c2a is{ForNonNullableByDefault} self::Class2);
   () → Null {
-    f2a(let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f2a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f2a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class2};
   };

pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.weak.expect

@@ -45,7 +45,7 @@ static method testInferred() → dynamic {
   self::Class1 c1a = f1a(0){(core::int) → self::Class1};
   self::expect(true, c1a is{ForNonNullableByDefault} self::Class1);
   () → Null {
-    f1a(let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f1a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f1a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class1};
   };
@@ -59,7 +59,7 @@ static method testInferred() → dynamic {
   self::Class2 c2a = f2a(0){(core::int) → self::Class2};
   self::expect(true, c2a is{ForNonNullableByDefault} self::Class2);
   () → Null {
-    f2a(let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f2a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f2a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class2};
   };

pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart.weak.transformed.expect

@@ -45,7 +45,7 @@ static method testInferred() → dynamic {
   self::Class1 c1a = f1a(0){(core::int) → self::Class1};
   self::expect(true, c1a is{ForNonNullableByDefault} self::Class1);
   () → Null {
-    f1a(let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f1a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f1a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class1};
   };
@@ -59,7 +59,7 @@ static method testInferred() → dynamic {
   self::Class2 c2a = f2a(0){(core::int) → self::Class2};
   self::expect(true, c2a is{ForNonNullableByDefault} self::Class2);
   () → Null {
-    f2a(let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f2a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f2a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class2};
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.expect

@@ -121,10 +121,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:73:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:73:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:74:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:74:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -140,7 +140,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:89:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:89:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -155,10 +155,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -172,17 +172,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.strong.transformed.expect

@@ -121,10 +121,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:73:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:73:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:74:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:74:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -140,7 +140,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:89:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:89:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -155,10 +155,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -172,17 +172,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.expect

@@ -121,10 +121,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:73:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:73:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:74:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:74:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -140,7 +140,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:89:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:89:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -155,10 +155,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -172,17 +172,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart.weak.transformed.expect

@@ -121,10 +121,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:73:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:73:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:74:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:74:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -140,7 +140,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:89:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:89:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -155,10 +155,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:103:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:104:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -172,17 +172,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:116:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:117:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:118:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off.dart:119:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.strong.expect

@@ -43,7 +43,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:31:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:31:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -60,7 +60,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:47:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:47:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.strong.transformed.expect

@@ -43,7 +43,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:31:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:31:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -60,7 +60,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:47:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:47:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.weak.expect

@@ -43,7 +43,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:31:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:31:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -60,7 +60,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:47:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:47:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart.weak.transformed.expect

@@ -43,7 +43,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:31:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:31:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -60,7 +60,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:47:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_default_values.dart:47:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri.dart.strong.expect

@@ -20,7 +20,7 @@ class Class extends core::Object { // from org-dartlang-testcase:///constructor_
 }
 static method main() → dynamic {}
 static method /* from org-dartlang-testcase:///constructor_tear_off_uri_part.dart */ test() → dynamic {
-  (core::int) → self::Class f = let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri_part.dart:8:27: Error: A value of type 'Class Function()' can't be assigned to a variable of type 'Class Function(int)'.
+  (core::int) → self::Class f = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri_part.dart:8:27: Error: A value of type 'Class Function()' can't be assigned to a variable of type 'Class Function(int)'.
  - 'Class' is from 'pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri.dart'.
   Class Function(int) f = Class.new;
                           ^" in (#C1) as{TypeError,ForNonNullableByDefault} (core::int) → self::Class;

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri.dart.strong.transformed.expect

@@ -20,7 +20,7 @@ class Class extends core::Object { // from org-dartlang-testcase:///constructor_
 }
 static method main() → dynamic {}
 static method /* from org-dartlang-testcase:///constructor_tear_off_uri_part.dart */ test() → dynamic {
-  (core::int) → self::Class f = let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri_part.dart:8:27: Error: A value of type 'Class Function()' can't be assigned to a variable of type 'Class Function(int)'.
+  (core::int) → self::Class f = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri_part.dart:8:27: Error: A value of type 'Class Function()' can't be assigned to a variable of type 'Class Function(int)'.
  - 'Class' is from 'pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri.dart'.
   Class Function(int) f = Class.new;
                           ^" in (#C1) as{TypeError,ForNonNullableByDefault} (core::int) → self::Class;

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri.dart.weak.expect

@@ -20,7 +20,7 @@ class Class extends core::Object { // from org-dartlang-testcase:///constructor_
 }
 static method main() → dynamic {}
 static method /* from org-dartlang-testcase:///constructor_tear_off_uri_part.dart */ test() → dynamic {
-  (core::int) → self::Class f = let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri_part.dart:8:27: Error: A value of type 'Class Function()' can't be assigned to a variable of type 'Class Function(int)'.
+  (core::int) → self::Class f = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri_part.dart:8:27: Error: A value of type 'Class Function()' can't be assigned to a variable of type 'Class Function(int)'.
  - 'Class' is from 'pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri.dart'.
   Class Function(int) f = Class.new;
                           ^" in (#C1) as{TypeError,ForNonNullableByDefault} (core::int) → self::Class;

pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri.dart.weak.transformed.expect

@@ -20,7 +20,7 @@ class Class extends core::Object { // from org-dartlang-testcase:///constructor_
 }
 static method main() → dynamic {}
 static method /* from org-dartlang-testcase:///constructor_tear_off_uri_part.dart */ test() → dynamic {
-  (core::int) → self::Class f = let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri_part.dart:8:27: Error: A value of type 'Class Function()' can't be assigned to a variable of type 'Class Function(int)'.
+  (core::int) → self::Class f = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri_part.dart:8:27: Error: A value of type 'Class Function()' can't be assigned to a variable of type 'Class Function(int)'.
  - 'Class' is from 'pkg/front_end/testcases/constructor_tearoffs/lowering/constructor_tear_off_uri.dart'.
   Class Function(int) f = Class.new;
                           ^" in (#C1) as{TypeError,ForNonNullableByDefault} (core::int) → self::Class;

pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.expect

@@ -145,10 +145,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:82:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:82:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:83:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:83:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -164,7 +164,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:98:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:98:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -179,10 +179,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -196,17 +196,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.strong.transformed.expect

@@ -145,10 +145,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:82:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:82:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:83:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:83:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -164,7 +164,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:98:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:98:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -179,10 +179,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -196,17 +196,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.expect

@@ -145,10 +145,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:82:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:82:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:83:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:83:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -164,7 +164,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:98:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:98:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -179,10 +179,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -196,17 +196,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart.weak.transformed.expect

@@ -145,10 +145,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:82:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:82:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:83:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:83:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -164,7 +164,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:98:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:98:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -179,10 +179,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:112:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:113:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -196,17 +196,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:125:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:126:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:127:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off.dart:128:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.strong.expect

@@ -51,7 +51,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -68,7 +68,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.strong.transformed.expect

@@ -51,7 +51,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -68,7 +68,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.weak.expect

@@ -51,7 +51,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -68,7 +68,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart.weak.transformed.expect

@@ -51,7 +51,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -68,7 +68,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.strong.expect

@@ -69,10 +69,10 @@ static method main() → dynamic {
   mai::Class3 c3a = f3a(42){(core::int) → mai::Class3};
   self::expect(42, c3a.{mai::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:44:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:44:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:45:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:45:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -90,7 +90,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4b is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4b is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:62:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:62:8: Error: Expected 1 type arguments.
     f4a<int, String>(); // error
        ^" in f4a{<inapplicable>}.<core::int, core::String>();
   };
@@ -99,7 +99,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4c is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4c is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:70:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:70:8: Error: Expected 0 type arguments.
     f4b<int>(); // error
        ^" in f4b{<inapplicable>}.<core::int>();
   };
@@ -116,7 +116,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4f is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4f is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:87:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:87:8: Error: Expected 1 type arguments.
     f4d<int, String>(); // error
        ^" in f4d{<inapplicable>}.<core::int, core::String>();
   };
@@ -125,7 +125,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4g is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4g is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:95:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:95:8: Error: Expected 0 type arguments.
     f4e<int>(); // error
        ^" in f4e{<inapplicable>}.<core::int>();
   };
@@ -143,7 +143,7 @@ Try removing the extra positional arguments.
   self::expect(false, c5b is{ForNonNullableByDefault} mai::Class5<core::double>);
   () → Null {
     f5a<core::String>(){() → mai::Class5<core::String>};
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:113:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:113:8: Error: Expected 1 type arguments.
     f5a<int, String>(); // error
        ^" in f5a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.strong.transformed.expect

@@ -69,10 +69,10 @@ static method main() → dynamic {
   mai::Class3 c3a = f3a(42){(core::int) → mai::Class3};
   self::expect(42, c3a.{mai::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:44:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:44:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:45:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:45:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -90,7 +90,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4b is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4b is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:62:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:62:8: Error: Expected 1 type arguments.
     f4a<int, String>(); // error
        ^" in f4a{<inapplicable>}.<core::int, core::String>();
   };
@@ -99,7 +99,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4c is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4c is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:70:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:70:8: Error: Expected 0 type arguments.
     f4b<int>(); // error
        ^" in f4b{<inapplicable>}.<core::int>();
   };
@@ -116,7 +116,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4f is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4f is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:87:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:87:8: Error: Expected 1 type arguments.
     f4d<int, String>(); // error
        ^" in f4d{<inapplicable>}.<core::int, core::String>();
   };
@@ -125,7 +125,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4g is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4g is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:95:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:95:8: Error: Expected 0 type arguments.
     f4e<int>(); // error
        ^" in f4e{<inapplicable>}.<core::int>();
   };
@@ -143,7 +143,7 @@ Try removing the extra positional arguments.
   self::expect(false, c5b is{ForNonNullableByDefault} mai::Class5<core::double>);
   () → Null {
     f5a<core::String>(){() → mai::Class5<core::String>};
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:113:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:113:8: Error: Expected 1 type arguments.
     f5a<int, String>(); // error
        ^" in f5a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.weak.expect

@@ -69,10 +69,10 @@ static method main() → dynamic {
   mai::Class3 c3a = f3a(42){(core::int) → mai::Class3};
   self::expect(42, c3a.{mai::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:44:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:44:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:45:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:45:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -90,7 +90,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4b is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4b is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:62:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:62:8: Error: Expected 1 type arguments.
     f4a<int, String>(); // error
        ^" in f4a{<inapplicable>}.<core::int, core::String>();
   };
@@ -99,7 +99,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4c is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4c is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:70:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:70:8: Error: Expected 0 type arguments.
     f4b<int>(); // error
        ^" in f4b{<inapplicable>}.<core::int>();
   };
@@ -116,7 +116,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4f is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4f is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:87:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:87:8: Error: Expected 1 type arguments.
     f4d<int, String>(); // error
        ^" in f4d{<inapplicable>}.<core::int, core::String>();
   };
@@ -125,7 +125,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4g is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4g is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:95:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:95:8: Error: Expected 0 type arguments.
     f4e<int>(); // error
        ^" in f4e{<inapplicable>}.<core::int>();
   };
@@ -143,7 +143,7 @@ Try removing the extra positional arguments.
   self::expect(false, c5b is{ForNonNullableByDefault} mai::Class5<core::double>);
   () → Null {
     f5a<core::String>(){() → mai::Class5<core::String>};
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:113:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:113:8: Error: Expected 1 type arguments.
     f5a<int, String>(); // error
        ^" in f5a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart.weak.transformed.expect

@@ -69,10 +69,10 @@ static method main() → dynamic {
   mai::Class3 c3a = f3a(42){(core::int) → mai::Class3};
   self::expect(42, c3a.{mai::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:44:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:44:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:45:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:45:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -90,7 +90,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4b is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4b is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:62:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:62:8: Error: Expected 1 type arguments.
     f4a<int, String>(); // error
        ^" in f4a{<inapplicable>}.<core::int, core::String>();
   };
@@ -99,7 +99,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4c is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4c is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:70:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:70:8: Error: Expected 0 type arguments.
     f4b<int>(); // error
        ^" in f4b{<inapplicable>}.<core::int>();
   };
@@ -116,7 +116,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4f is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4f is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:87:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:87:8: Error: Expected 1 type arguments.
     f4d<int, String>(); // error
        ^" in f4d{<inapplicable>}.<core::int, core::String>();
   };
@@ -125,7 +125,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4g is{ForNonNullableByDefault} mai::Class4<core::int>);
   self::expect(false, c4g is{ForNonNullableByDefault} mai::Class4<core::String>);
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:95:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:95:8: Error: Expected 0 type arguments.
     f4e<int>(); // error
        ^" in f4e{<inapplicable>}.<core::int>();
   };
@@ -143,7 +143,7 @@ Try removing the extra positional arguments.
   self::expect(false, c5b is{ForNonNullableByDefault} mai::Class5<core::double>);
   () → Null {
     f5a<core::String>(){() → mai::Class5<core::String>};
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:113:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/from_dill/main.dart:113:8: Error: Expected 1 type arguments.
     f5a<int, String>(); // error
        ^" in f5a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.strong.expect

@@ -84,7 +84,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:24:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:24:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -93,7 +93,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:32:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:32:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -113,7 +113,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:60:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:60:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.strong.transformed.expect

@@ -84,7 +84,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:24:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:24:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -93,7 +93,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:32:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:32:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -113,7 +113,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:60:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:60:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.weak.expect

@@ -84,7 +84,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:24:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:24:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -93,7 +93,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:32:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:32:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -113,7 +113,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:60:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:60:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart.weak.transformed.expect

@@ -84,7 +84,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:24:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:24:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -93,7 +93,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:32:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:32:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -113,7 +113,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:60:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_constructor_tear_off.dart:60:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.strong.expect

@@ -104,7 +104,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -113,7 +113,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -133,7 +133,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.strong.transformed.expect

@@ -104,7 +104,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -113,7 +113,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -133,7 +133,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.weak.expect

@@ -104,7 +104,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -113,7 +113,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -133,7 +133,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart.weak.transformed.expect

@@ -104,7 +104,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -113,7 +113,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -133,7 +133,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.strong.expect

@@ -109,7 +109,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -118,7 +118,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -138,7 +138,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.strong.transformed.expect

@@ -109,7 +109,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -118,7 +118,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -138,7 +138,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.weak.expect

@@ -109,7 +109,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -118,7 +118,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -138,7 +138,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart.weak.transformed.expect

@@ -109,7 +109,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1b is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1b is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:27:8: Error: Expected 1 type arguments.
     f1a<int, String>(); // error
        ^" in f1a{<inapplicable>}.<core::int, core::String>();
   };
@@ -118,7 +118,7 @@ static method testGeneric() → dynamic {
   self::expect(true, c1c is{ForNonNullableByDefault} self::Class1<core::int>);
   self::expect(false, c1c is{ForNonNullableByDefault} self::Class1<core::String>);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:35:8: Error: Expected 0 type arguments.
     f1b<int>(); // error
        ^" in f1b{<inapplicable>}.<core::int>();
   };
@@ -138,7 +138,7 @@ static method testBounded() → dynamic {
   self::expect(false, c2b is{ForNonNullableByDefault} self::Class2<core::double>);
   () → Null {
     f2a<core::String>(){() → self::Class2<core::String>};
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/generic_redirecting_factory_tear_off.dart:75:8: Error: Expected 1 type arguments.
     f2a<int, String>(); // error
        ^" in f2a{<inapplicable>}.<core::int, core::String>();
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.strong.expect

@@ -49,7 +49,7 @@ static method testInferred() → dynamic {
   self::Class1 c1a = f1a(0){(core::int) → self::Class1};
   self::expect(true, c1a is{ForNonNullableByDefault} self::Class1);
   () → Null {
-    f1a(let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f1a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f1a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class1};
   };
@@ -63,7 +63,7 @@ static method testInferred() → dynamic {
   self::Class2 c2a = f2a(0){(core::int) → self::Class2};
   self::expect(true, c2a is{ForNonNullableByDefault} self::Class2);
   () → Null {
-    f2a(let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f2a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f2a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class2};
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.strong.transformed.expect

@@ -49,7 +49,7 @@ static method testInferred() → dynamic {
   self::Class1 c1a = f1a(0){(core::int) → self::Class1};
   self::expect(true, c1a is{ForNonNullableByDefault} self::Class1);
   () → Null {
-    f1a(let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f1a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f1a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class1};
   };
@@ -63,7 +63,7 @@ static method testInferred() → dynamic {
   self::Class2 c2a = f2a(0){(core::int) → self::Class2};
   self::expect(true, c2a is{ForNonNullableByDefault} self::Class2);
   () → Null {
-    f2a(let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f2a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f2a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class2};
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.weak.expect

@@ -49,7 +49,7 @@ static method testInferred() → dynamic {
   self::Class1 c1a = f1a(0){(core::int) → self::Class1};
   self::expect(true, c1a is{ForNonNullableByDefault} self::Class1);
   () → Null {
-    f1a(let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f1a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f1a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class1};
   };
@@ -63,7 +63,7 @@ static method testInferred() → dynamic {
   self::Class2 c2a = f2a(0){(core::int) → self::Class2};
   self::expect(true, c2a is{ForNonNullableByDefault} self::Class2);
   () → Null {
-    f2a(let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f2a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f2a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class2};
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart.weak.transformed.expect

@@ -49,7 +49,7 @@ static method testInferred() → dynamic {
   self::Class1 c1a = f1a(0){(core::int) → self::Class1};
   self::expect(true, c1a is{ForNonNullableByDefault} self::Class1);
   () → Null {
-    f1a(let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f1a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:38:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f1a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class1};
   };
@@ -63,7 +63,7 @@ static method testInferred() → dynamic {
   self::Class2 c2a = f2a(0){(core::int) → self::Class2};
   self::expect(true, c2a is{ForNonNullableByDefault} self::Class2);
   () → Null {
-    f2a(let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
+    f2a(invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/inferred_constructor_tear_off.dart:52:9: Error: The argument type 'String' can't be assigned to the parameter type 'int'.
     f2a(''); // error
         ^" in "" as{TypeError,ForNonNullableByDefault} core::int){(core::int) → self::Class2};
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.expect

@@ -183,10 +183,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -202,7 +202,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -217,10 +217,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -234,17 +234,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.strong.transformed.expect

@@ -183,10 +183,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -202,7 +202,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -217,10 +217,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -234,17 +234,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.expect

@@ -183,10 +183,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -202,7 +202,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -217,10 +217,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -234,17 +234,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart.weak.transformed.expect

@@ -183,10 +183,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -202,7 +202,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -217,10 +217,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -234,17 +234,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.strong.expect

@@ -53,7 +53,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -70,7 +70,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.strong.transformed.expect

@@ -53,7 +53,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -70,7 +70,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.weak.expect

@@ -53,7 +53,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -70,7 +70,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart.weak.transformed.expect

@@ -53,7 +53,7 @@ static method testDefaultValues() → void {
   self::Class1 c1b = f1a(87){([core::int]) → self::Class1};
   self::expect(87, c1b.{self::Class1::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:33:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1a(42, 87); // error
        ^" in f1a{<inapplicable>}.(42, 87);
@@ -70,7 +70,7 @@ Try removing the extra positional arguments.
   self::Class2 c2b = f2a(field: 87){({field: core::int}) → self::Class2};
   self::expect(87, c2b.{self::Class2::field}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values.dart:49:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(87); // error
        ^" in f2a{<inapplicable>}.(87);

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.strong.expect

@@ -111,7 +111,7 @@ static method testDefaultValues() → dynamic {
   self::expect(42, c1e.{self::Class1::field1}{core::int});
   self::expect(2, c1e.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:58:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:58:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1b(42, 87); // error
        ^" in f1b{<inapplicable>}.(42, 87);
@@ -121,11 +121,11 @@ Try removing the extra positional arguments.
   self::expect(1, c1f.{self::Class1::field1}{core::int});
   self::expect(2, c1f.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:66:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:66:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f1c(42); // error
        ^" in f1c{<inapplicable>}.(42);
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:67:8: Error: Too many positional arguments: 0 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:67:8: Error: Too many positional arguments: 0 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1c(42, 87); // error
        ^" in f1c{<inapplicable>}.(42, 87);
@@ -170,7 +170,7 @@ Try removing the extra positional arguments.
   self::expect(42, c4b.{self::Class1::field1}{core::int});
   self::expect(2, c4b.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:112:21: Error: No named parameter with the name 'field2'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:112:21: Error: No named parameter with the name 'field2'.
     f2c(field1: 42, field2: 87); // error
                     ^^^^^^" in f2c{<inapplicable>}.(field1: 42, field2: 87);
   };
@@ -182,7 +182,7 @@ Try removing the extra positional arguments.
   self::expect(1, c5b.{self::Class1::field1}{core::int});
   self::expect(87, c5b.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:123:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:123:9: Error: No named parameter with the name 'field1'.
     f2d(field1: 42, field2: 87); // error
         ^^^^^^" in f2d{<inapplicable>}.(field1: 42, field2: 87);
   };
@@ -191,13 +191,13 @@ Try removing the extra positional arguments.
   self::expect(1, c6a.{self::Class1::field1}{core::int});
   self::expect(2, c6a.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:131:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:131:9: Error: No named parameter with the name 'field1'.
     f2e(field1: 42); // error
         ^^^^^^" in f2e{<inapplicable>}.(field1: 42);
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:132:9: Error: No named parameter with the name 'field2'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:132:9: Error: No named parameter with the name 'field2'.
     f2e(field2: 87); // error
         ^^^^^^" in f2e{<inapplicable>}.(field2: 87);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:133:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:133:9: Error: No named parameter with the name 'field1'.
     f2e(field1: 42, field2: 87); // error
         ^^^^^^" in f2e{<inapplicable>}.(field1: 42, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.strong.transformed.expect

@@ -111,7 +111,7 @@ static method testDefaultValues() → dynamic {
   self::expect(42, c1e.{self::Class1::field1}{core::int});
   self::expect(2, c1e.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:58:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:58:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1b(42, 87); // error
        ^" in f1b{<inapplicable>}.(42, 87);
@@ -121,11 +121,11 @@ Try removing the extra positional arguments.
   self::expect(1, c1f.{self::Class1::field1}{core::int});
   self::expect(2, c1f.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:66:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:66:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f1c(42); // error
        ^" in f1c{<inapplicable>}.(42);
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:67:8: Error: Too many positional arguments: 0 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:67:8: Error: Too many positional arguments: 0 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1c(42, 87); // error
        ^" in f1c{<inapplicable>}.(42, 87);
@@ -170,7 +170,7 @@ Try removing the extra positional arguments.
   self::expect(42, c4b.{self::Class1::field1}{core::int});
   self::expect(2, c4b.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:112:21: Error: No named parameter with the name 'field2'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:112:21: Error: No named parameter with the name 'field2'.
     f2c(field1: 42, field2: 87); // error
                     ^^^^^^" in f2c{<inapplicable>}.(field1: 42, field2: 87);
   };
@@ -182,7 +182,7 @@ Try removing the extra positional arguments.
   self::expect(1, c5b.{self::Class1::field1}{core::int});
   self::expect(87, c5b.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:123:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:123:9: Error: No named parameter with the name 'field1'.
     f2d(field1: 42, field2: 87); // error
         ^^^^^^" in f2d{<inapplicable>}.(field1: 42, field2: 87);
   };
@@ -191,13 +191,13 @@ Try removing the extra positional arguments.
   self::expect(1, c6a.{self::Class1::field1}{core::int});
   self::expect(2, c6a.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:131:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:131:9: Error: No named parameter with the name 'field1'.
     f2e(field1: 42); // error
         ^^^^^^" in f2e{<inapplicable>}.(field1: 42);
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:132:9: Error: No named parameter with the name 'field2'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:132:9: Error: No named parameter with the name 'field2'.
     f2e(field2: 87); // error
         ^^^^^^" in f2e{<inapplicable>}.(field2: 87);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:133:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:133:9: Error: No named parameter with the name 'field1'.
     f2e(field1: 42, field2: 87); // error
         ^^^^^^" in f2e{<inapplicable>}.(field1: 42, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.weak.expect

@@ -111,7 +111,7 @@ static method testDefaultValues() → dynamic {
   self::expect(42, c1e.{self::Class1::field1}{core::int});
   self::expect(2, c1e.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:58:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:58:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1b(42, 87); // error
        ^" in f1b{<inapplicable>}.(42, 87);
@@ -121,11 +121,11 @@ Try removing the extra positional arguments.
   self::expect(1, c1f.{self::Class1::field1}{core::int});
   self::expect(2, c1f.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:66:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:66:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f1c(42); // error
        ^" in f1c{<inapplicable>}.(42);
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:67:8: Error: Too many positional arguments: 0 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:67:8: Error: Too many positional arguments: 0 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1c(42, 87); // error
        ^" in f1c{<inapplicable>}.(42, 87);
@@ -170,7 +170,7 @@ Try removing the extra positional arguments.
   self::expect(42, c4b.{self::Class1::field1}{core::int});
   self::expect(2, c4b.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:112:21: Error: No named parameter with the name 'field2'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:112:21: Error: No named parameter with the name 'field2'.
     f2c(field1: 42, field2: 87); // error
                     ^^^^^^" in f2c{<inapplicable>}.(field1: 42, field2: 87);
   };
@@ -182,7 +182,7 @@ Try removing the extra positional arguments.
   self::expect(1, c5b.{self::Class1::field1}{core::int});
   self::expect(87, c5b.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:123:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:123:9: Error: No named parameter with the name 'field1'.
     f2d(field1: 42, field2: 87); // error
         ^^^^^^" in f2d{<inapplicable>}.(field1: 42, field2: 87);
   };
@@ -191,13 +191,13 @@ Try removing the extra positional arguments.
   self::expect(1, c6a.{self::Class1::field1}{core::int});
   self::expect(2, c6a.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:131:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:131:9: Error: No named parameter with the name 'field1'.
     f2e(field1: 42); // error
         ^^^^^^" in f2e{<inapplicable>}.(field1: 42);
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:132:9: Error: No named parameter with the name 'field2'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:132:9: Error: No named parameter with the name 'field2'.
     f2e(field2: 87); // error
         ^^^^^^" in f2e{<inapplicable>}.(field2: 87);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:133:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:133:9: Error: No named parameter with the name 'field1'.
     f2e(field1: 42, field2: 87); // error
         ^^^^^^" in f2e{<inapplicable>}.(field1: 42, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart.weak.transformed.expect

@@ -111,7 +111,7 @@ static method testDefaultValues() → dynamic {
   self::expect(42, c1e.{self::Class1::field1}{core::int});
   self::expect(2, c1e.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:58:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:58:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1b(42, 87); // error
        ^" in f1b{<inapplicable>}.(42, 87);
@@ -121,11 +121,11 @@ Try removing the extra positional arguments.
   self::expect(1, c1f.{self::Class1::field1}{core::int});
   self::expect(2, c1f.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:66:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:66:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f1c(42); // error
        ^" in f1c{<inapplicable>}.(42);
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:67:8: Error: Too many positional arguments: 0 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:67:8: Error: Too many positional arguments: 0 allowed, but 2 found.
 Try removing the extra positional arguments.
     f1c(42, 87); // error
        ^" in f1c{<inapplicable>}.(42, 87);
@@ -170,7 +170,7 @@ Try removing the extra positional arguments.
   self::expect(42, c4b.{self::Class1::field1}{core::int});
   self::expect(2, c4b.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:112:21: Error: No named parameter with the name 'field2'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:112:21: Error: No named parameter with the name 'field2'.
     f2c(field1: 42, field2: 87); // error
                     ^^^^^^" in f2c{<inapplicable>}.(field1: 42, field2: 87);
   };
@@ -182,7 +182,7 @@ Try removing the extra positional arguments.
   self::expect(1, c5b.{self::Class1::field1}{core::int});
   self::expect(87, c5b.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:123:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:123:9: Error: No named parameter with the name 'field1'.
     f2d(field1: 42, field2: 87); // error
         ^^^^^^" in f2d{<inapplicable>}.(field1: 42, field2: 87);
   };
@@ -191,13 +191,13 @@ Try removing the extra positional arguments.
   self::expect(1, c6a.{self::Class1::field1}{core::int});
   self::expect(2, c6a.{self::Class1::field2}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:131:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:131:9: Error: No named parameter with the name 'field1'.
     f2e(field1: 42); // error
         ^^^^^^" in f2e{<inapplicable>}.(field1: 42);
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:132:9: Error: No named parameter with the name 'field2'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:132:9: Error: No named parameter with the name 'field2'.
     f2e(field2: 87); // error
         ^^^^^^" in f2e{<inapplicable>}.(field2: 87);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:133:9: Error: No named parameter with the name 'field1'.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/redirecting_factory_tear_off_default_values_complex.dart:133:9: Error: No named parameter with the name 'field1'.
     f2e(field1: 42, field2: 87); // error
         ^^^^^^" in f2e{<inapplicable>}.(field1: 42, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.strong.expect

@@ -124,7 +124,7 @@ static method main() → dynamic {
   self::A c1a = f1a(){() → self::A};
   self::expect(true, c1a is{ForNonNullableByDefault} self::A);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:34:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:34:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f1a(0); // error
        ^" in f1a{<inapplicable>}.(0);
@@ -137,7 +137,7 @@ Try removing the extra positional arguments.
   self::A c2a = f2a<core::num>(){() → self::A};
   self::expect(true, c2a is{ForNonNullableByDefault} self::A);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:46:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:46:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(0); // error
        ^" in f2a{<inapplicable>}.<core::num>(0);
@@ -157,11 +157,11 @@ Try removing the extra positional arguments.
   self::expect(0, c3a.{self::B::field1}{core::int});
   self::expect("", c3a.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:65:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:65:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f3a(0); // error
        ^" in f3a{<inapplicable>}.(0);
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:66:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:66:8: Error: Expected 0 type arguments.
     f3a<String>(); // error
        ^" in f3a{<inapplicable>}.<core::String>();
   };
@@ -180,14 +180,14 @@ Try removing the extra positional arguments.
   self::expect(42, c3c.{self::B::field1}{core::int});
   self::expect("", c3c.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:85:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:85:8: Error: Too few positional arguments: 1 required, 0 given.
     f3c(); // error
        ^" in f3c{<inapplicable>}.();
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:86:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:86:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3c(0, 0); // error
        ^" in f3c{<inapplicable>}.(0, 0);
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:87:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:87:8: Error: Expected 0 type arguments.
     f3c<String>(0); // error
        ^" in f3c{<inapplicable>}.<core::String>(0);
   };
@@ -207,13 +207,13 @@ Try removing the extra positional arguments.
   self::expect(42, c3e.{self::B::field1}{core::int});
   self::expect("foo", c3e.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:107:8: Error: Too few positional arguments: 2 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:107:8: Error: Too few positional arguments: 2 required, 0 given.
     f3e(); // error
        ^" in f3e{<inapplicable>}.();
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:108:8: Error: Too few positional arguments: 2 required, 1 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:108:8: Error: Too few positional arguments: 2 required, 1 given.
     f3e(0); // error
        ^" in f3e{<inapplicable>}.(0);
-    let final Never #t10 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:109:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:109:8: Error: Expected 0 type arguments.
     f3e<String>(0, ''); // error
        ^" in f3e{<inapplicable>}.<core::String>(0, "");
   };
@@ -234,7 +234,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4b is{ForNonNullableByDefault} self::B<core::int>);
   self::expect(false, c4b is{ForNonNullableByDefault} self::B<core::double>);
   () → Null {
-    let final Never #t11 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:130:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:130:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f4a(0); // error
        ^" in f4a{<inapplicable>}.<core::num>(0);
@@ -257,11 +257,11 @@ Try removing the extra positional arguments.
   self::expect(true, c5b is{ForNonNullableByDefault} self::B<core::int>);
   self::expect(false, c5b is{ForNonNullableByDefault} self::B<core::double>);
   () → Null {
-    let final Never #t12 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:152:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:152:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f5a(0); // error
        ^" in f5a{<inapplicable>}.<core::num, core::String>(0);
-    let final Never #t13 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:153:8: Error: Expected 2 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:153:8: Error: Expected 2 type arguments.
     f5a<String>(); // error
        ^" in f5a{<inapplicable>}.<core::String>();
     f5a<core::String, core::String>(){() → self::B<core::String>};

pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.strong.transformed.expect

@@ -124,7 +124,7 @@ static method main() → dynamic {
   self::A c1a = f1a(){() → self::A};
   self::expect(true, c1a is{ForNonNullableByDefault} self::A);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:34:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:34:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f1a(0); // error
        ^" in f1a{<inapplicable>}.(0);
@@ -137,7 +137,7 @@ Try removing the extra positional arguments.
   self::A c2a = f2a<core::num>(){() → self::A};
   self::expect(true, c2a is{ForNonNullableByDefault} self::A);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:46:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:46:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(0); // error
        ^" in f2a{<inapplicable>}.<core::num>(0);
@@ -157,11 +157,11 @@ Try removing the extra positional arguments.
   self::expect(0, c3a.{self::B::field1}{core::int});
   self::expect("", c3a.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:65:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:65:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f3a(0); // error
        ^" in f3a{<inapplicable>}.(0);
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:66:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:66:8: Error: Expected 0 type arguments.
     f3a<String>(); // error
        ^" in f3a{<inapplicable>}.<core::String>();
   };
@@ -180,14 +180,14 @@ Try removing the extra positional arguments.
   self::expect(42, c3c.{self::B::field1}{core::int});
   self::expect("", c3c.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:85:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:85:8: Error: Too few positional arguments: 1 required, 0 given.
     f3c(); // error
        ^" in f3c{<inapplicable>}.();
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:86:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:86:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3c(0, 0); // error
        ^" in f3c{<inapplicable>}.(0, 0);
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:87:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:87:8: Error: Expected 0 type arguments.
     f3c<String>(0); // error
        ^" in f3c{<inapplicable>}.<core::String>(0);
   };
@@ -207,13 +207,13 @@ Try removing the extra positional arguments.
   self::expect(42, c3e.{self::B::field1}{core::int});
   self::expect("foo", c3e.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:107:8: Error: Too few positional arguments: 2 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:107:8: Error: Too few positional arguments: 2 required, 0 given.
     f3e(); // error
        ^" in f3e{<inapplicable>}.();
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:108:8: Error: Too few positional arguments: 2 required, 1 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:108:8: Error: Too few positional arguments: 2 required, 1 given.
     f3e(0); // error
        ^" in f3e{<inapplicable>}.(0);
-    let final Never #t10 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:109:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:109:8: Error: Expected 0 type arguments.
     f3e<String>(0, ''); // error
        ^" in f3e{<inapplicable>}.<core::String>(0, "");
   };
@@ -234,7 +234,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4b is{ForNonNullableByDefault} self::B<core::int>);
   self::expect(false, c4b is{ForNonNullableByDefault} self::B<core::double>);
   () → Null {
-    let final Never #t11 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:130:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:130:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f4a(0); // error
        ^" in f4a{<inapplicable>}.<core::num>(0);
@@ -257,11 +257,11 @@ Try removing the extra positional arguments.
   self::expect(true, c5b is{ForNonNullableByDefault} self::B<core::int>);
   self::expect(false, c5b is{ForNonNullableByDefault} self::B<core::double>);
   () → Null {
-    let final Never #t12 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:152:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:152:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f5a(0); // error
        ^" in f5a{<inapplicable>}.<core::num, core::String>(0);
-    let final Never #t13 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:153:8: Error: Expected 2 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:153:8: Error: Expected 2 type arguments.
     f5a<String>(); // error
        ^" in f5a{<inapplicable>}.<core::String>();
     f5a<core::String, core::String>(){() → self::B<core::String>};

pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.weak.expect

@@ -124,7 +124,7 @@ static method main() → dynamic {
   self::A c1a = f1a(){() → self::A};
   self::expect(true, c1a is{ForNonNullableByDefault} self::A);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:34:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:34:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f1a(0); // error
        ^" in f1a{<inapplicable>}.(0);
@@ -137,7 +137,7 @@ Try removing the extra positional arguments.
   self::A c2a = f2a<core::num>(){() → self::A};
   self::expect(true, c2a is{ForNonNullableByDefault} self::A);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:46:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:46:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(0); // error
        ^" in f2a{<inapplicable>}.<core::num>(0);
@@ -157,11 +157,11 @@ Try removing the extra positional arguments.
   self::expect(0, c3a.{self::B::field1}{core::int});
   self::expect("", c3a.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:65:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:65:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f3a(0); // error
        ^" in f3a{<inapplicable>}.(0);
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:66:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:66:8: Error: Expected 0 type arguments.
     f3a<String>(); // error
        ^" in f3a{<inapplicable>}.<core::String>();
   };
@@ -180,14 +180,14 @@ Try removing the extra positional arguments.
   self::expect(42, c3c.{self::B::field1}{core::int});
   self::expect("", c3c.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:85:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:85:8: Error: Too few positional arguments: 1 required, 0 given.
     f3c(); // error
        ^" in f3c{<inapplicable>}.();
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:86:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:86:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3c(0, 0); // error
        ^" in f3c{<inapplicable>}.(0, 0);
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:87:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:87:8: Error: Expected 0 type arguments.
     f3c<String>(0); // error
        ^" in f3c{<inapplicable>}.<core::String>(0);
   };
@@ -207,13 +207,13 @@ Try removing the extra positional arguments.
   self::expect(42, c3e.{self::B::field1}{core::int});
   self::expect("foo", c3e.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:107:8: Error: Too few positional arguments: 2 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:107:8: Error: Too few positional arguments: 2 required, 0 given.
     f3e(); // error
        ^" in f3e{<inapplicable>}.();
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:108:8: Error: Too few positional arguments: 2 required, 1 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:108:8: Error: Too few positional arguments: 2 required, 1 given.
     f3e(0); // error
        ^" in f3e{<inapplicable>}.(0);
-    let final Never #t10 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:109:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:109:8: Error: Expected 0 type arguments.
     f3e<String>(0, ''); // error
        ^" in f3e{<inapplicable>}.<core::String>(0, "");
   };
@@ -234,7 +234,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4b is{ForNonNullableByDefault} self::B<core::int>);
   self::expect(false, c4b is{ForNonNullableByDefault} self::B<core::double>);
   () → Null {
-    let final Never #t11 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:130:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:130:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f4a(0); // error
        ^" in f4a{<inapplicable>}.<core::num>(0);
@@ -257,11 +257,11 @@ Try removing the extra positional arguments.
   self::expect(true, c5b is{ForNonNullableByDefault} self::B<core::int>);
   self::expect(false, c5b is{ForNonNullableByDefault} self::B<core::double>);
   () → Null {
-    let final Never #t12 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:152:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:152:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f5a(0); // error
        ^" in f5a{<inapplicable>}.<core::num, core::String>(0);
-    let final Never #t13 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:153:8: Error: Expected 2 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:153:8: Error: Expected 2 type arguments.
     f5a<String>(); // error
        ^" in f5a{<inapplicable>}.<core::String>();
     f5a<core::String, core::String>(){() → self::B<core::String>};

pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart.weak.transformed.expect

@@ -124,7 +124,7 @@ static method main() → dynamic {
   self::A c1a = f1a(){() → self::A};
   self::expect(true, c1a is{ForNonNullableByDefault} self::A);
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:34:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:34:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f1a(0); // error
        ^" in f1a{<inapplicable>}.(0);
@@ -137,7 +137,7 @@ Try removing the extra positional arguments.
   self::A c2a = f2a<core::num>(){() → self::A};
   self::expect(true, c2a is{ForNonNullableByDefault} self::A);
   () → Null {
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:46:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:46:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f2a(0); // error
        ^" in f2a{<inapplicable>}.<core::num>(0);
@@ -157,11 +157,11 @@ Try removing the extra positional arguments.
   self::expect(0, c3a.{self::B::field1}{core::int});
   self::expect("", c3a.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:65:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:65:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f3a(0); // error
        ^" in f3a{<inapplicable>}.(0);
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:66:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:66:8: Error: Expected 0 type arguments.
     f3a<String>(); // error
        ^" in f3a{<inapplicable>}.<core::String>();
   };
@@ -180,14 +180,14 @@ Try removing the extra positional arguments.
   self::expect(42, c3c.{self::B::field1}{core::int});
   self::expect("", c3c.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:85:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:85:8: Error: Too few positional arguments: 1 required, 0 given.
     f3c(); // error
        ^" in f3c{<inapplicable>}.();
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:86:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:86:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3c(0, 0); // error
        ^" in f3c{<inapplicable>}.(0, 0);
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:87:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:87:8: Error: Expected 0 type arguments.
     f3c<String>(0); // error
        ^" in f3c{<inapplicable>}.<core::String>(0);
   };
@@ -207,13 +207,13 @@ Try removing the extra positional arguments.
   self::expect(42, c3e.{self::B::field1}{core::int});
   self::expect("foo", c3e.{self::B::field2}{core::String});
   () → Null {
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:107:8: Error: Too few positional arguments: 2 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:107:8: Error: Too few positional arguments: 2 required, 0 given.
     f3e(); // error
        ^" in f3e{<inapplicable>}.();
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:108:8: Error: Too few positional arguments: 2 required, 1 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:108:8: Error: Too few positional arguments: 2 required, 1 given.
     f3e(0); // error
        ^" in f3e{<inapplicable>}.(0);
-    let final Never #t10 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:109:8: Error: Expected 0 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:109:8: Error: Expected 0 type arguments.
     f3e<String>(0, ''); // error
        ^" in f3e{<inapplicable>}.<core::String>(0, "");
   };
@@ -234,7 +234,7 @@ Try removing the extra positional arguments.
   self::expect(true, c4b is{ForNonNullableByDefault} self::B<core::int>);
   self::expect(false, c4b is{ForNonNullableByDefault} self::B<core::double>);
   () → Null {
-    let final Never #t11 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:130:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:130:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f4a(0); // error
        ^" in f4a{<inapplicable>}.<core::num>(0);
@@ -257,11 +257,11 @@ Try removing the extra positional arguments.
   self::expect(true, c5b is{ForNonNullableByDefault} self::B<core::int>);
   self::expect(false, c5b is{ForNonNullableByDefault} self::B<core::double>);
   () → Null {
-    let final Never #t12 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:152:8: Error: Too many positional arguments: 0 allowed, but 1 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:152:8: Error: Too many positional arguments: 0 allowed, but 1 found.
 Try removing the extra positional arguments.
     f5a(0); // error
        ^" in f5a{<inapplicable>}.<core::num, core::String>(0);
-    let final Never #t13 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:153:8: Error: Expected 2 type arguments.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/lowering/typedef_tear_off.dart:153:8: Error: Expected 2 type arguments.
     f5a<String>(); // error
        ^" in f5a{<inapplicable>}.<core::String>();
     f5a<core::String, core::String>(){() → self::B<core::String>};

pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart.strong.expect

@@ -33,21 +33,21 @@ class A extends core::Object {
 static method test1() → () → self::A
   return #C1;
 static method test2() → () → self::A
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:13:25: Error: A value of type 'A Function(int)' can't be returned from a function with return type 'A Function()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:13:25: Error: A value of type 'A Function(int)' can't be returned from a function with return type 'A Function()'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function() test2() => A.foo2; // Error.
                         ^" in (#C2) as{TypeError,ForNonNullableByDefault} () → self::A;
 static method test3() → () → self::A
   return #C3;
 static method test4() → (core::int) → self::A
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:15:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:15:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function(int) test4() => A.new; // Error.
                            ^" in (#C3) as{TypeError,ForNonNullableByDefault} (core::int) → self::A;
 static method test5() → () → self::A
   return #C4;
 static method test6() → (core::int) → self::A
-  return let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:17:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:17:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function(int) test6() => A.bar1; // Error.
                            ^" in (#C4) as{TypeError,ForNonNullableByDefault} (core::int) → self::A;

pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart.strong.transformed.expect

@@ -33,21 +33,21 @@ class A extends core::Object {
 static method test1() → () → self::A
   return #C1;
 static method test2() → () → self::A
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:13:25: Error: A value of type 'A Function(int)' can't be returned from a function with return type 'A Function()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:13:25: Error: A value of type 'A Function(int)' can't be returned from a function with return type 'A Function()'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function() test2() => A.foo2; // Error.
                         ^" in (#C2) as{TypeError,ForNonNullableByDefault} () → self::A;
 static method test3() → () → self::A
   return #C3;
 static method test4() → (core::int) → self::A
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:15:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:15:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function(int) test4() => A.new; // Error.
                            ^" in (#C3) as{TypeError,ForNonNullableByDefault} (core::int) → self::A;
 static method test5() → () → self::A
   return #C4;
 static method test6() → (core::int) → self::A
-  return let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:17:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:17:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function(int) test6() => A.bar1; // Error.
                            ^" in (#C4) as{TypeError,ForNonNullableByDefault} (core::int) → self::A;

pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart.weak.expect

@@ -33,21 +33,21 @@ class A extends core::Object {
 static method test1() → () → self::A
   return #C1;
 static method test2() → () → self::A
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:13:25: Error: A value of type 'A Function(int)' can't be returned from a function with return type 'A Function()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:13:25: Error: A value of type 'A Function(int)' can't be returned from a function with return type 'A Function()'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function() test2() => A.foo2; // Error.
                         ^" in (#C2) as{TypeError,ForNonNullableByDefault} () → self::A;
 static method test3() → () → self::A
   return #C3;
 static method test4() → (core::int) → self::A
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:15:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:15:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function(int) test4() => A.new; // Error.
                            ^" in (#C3) as{TypeError,ForNonNullableByDefault} (core::int) → self::A;
 static method test5() → () → self::A
   return #C4;
 static method test6() → (core::int) → self::A
-  return let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:17:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:17:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function(int) test6() => A.bar1; // Error.
                            ^" in (#C4) as{TypeError,ForNonNullableByDefault} (core::int) → self::A;

pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart.weak.transformed.expect

@@ -33,21 +33,21 @@ class A extends core::Object {
 static method test1() → () → self::A
   return #C1;
 static method test2() → () → self::A
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:13:25: Error: A value of type 'A Function(int)' can't be returned from a function with return type 'A Function()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:13:25: Error: A value of type 'A Function(int)' can't be returned from a function with return type 'A Function()'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function() test2() => A.foo2; // Error.
                         ^" in (#C2) as{TypeError,ForNonNullableByDefault} () → self::A;
 static method test3() → () → self::A
   return #C3;
 static method test4() → (core::int) → self::A
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:15:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:15:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function(int) test4() => A.new; // Error.
                            ^" in (#C3) as{TypeError,ForNonNullableByDefault} (core::int) → self::A;
 static method test5() → () → self::A
   return #C4;
 static method test6() → (core::int) → self::A
-  return let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:17:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart:17:28: Error: A value of type 'A Function()' can't be returned from a function with return type 'A Function(int)'.
  - 'A' is from 'pkg/front_end/testcases/constructor_tearoffs/nongeneric_tearoff_with_context.dart'.
 A Function(int) test6() => A.bar1; // Error.
                            ^" in (#C4) as{TypeError,ForNonNullableByDefault} (core::int) → self::A;

pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.expect

@@ -149,10 +149,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -168,7 +168,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -183,10 +183,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -200,17 +200,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.strong.transformed.expect

@@ -149,10 +149,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -168,7 +168,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -183,10 +183,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -200,17 +200,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.expect

@@ -149,10 +149,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -168,7 +168,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -183,10 +183,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -200,17 +200,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart.weak.transformed.expect

@@ -149,10 +149,10 @@ static method testArgs() → dynamic {
   self::Class3 c3a = f3a(42){(core::int) → self::Class3};
   self::expect(42, c3a.{self::Class3::field}{core::int});
   () → Null {
-    let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:99:8: Error: Too few positional arguments: 1 required, 0 given.
     f3a(); // error
        ^" in f3a{<inapplicable>}.();
-    let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:100:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f3a(42, 87); // error
        ^" in f3a{<inapplicable>}.(42, 87);
@@ -168,7 +168,7 @@ Try removing the extra positional arguments.
   self::Class4 c4b = f4a(42){([core::int?]) → self::Class4};
   self::expect(42, c4b.{self::Class4::field}{core::int?});
   () → Null {
-    let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:115:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f4a(42, 87); // error
        ^" in f4a{<inapplicable>}.(42, 87);
@@ -183,10 +183,10 @@ Try removing the extra positional arguments.
   self::expect(87, c5b.{self::Class5::field1}{core::int});
   self::expect(42, c5b.{self::Class5::field2}{core::int?});
   () → Null {
-    let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:129:8: Error: Too few positional arguments: 1 required, 0 given.
     f5a(); // error
        ^" in f5a{<inapplicable>}.();
-    let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:130:8: Error: Too many positional arguments: 2 allowed, but 3 found.
 Try removing the extra positional arguments.
     f5a(42, 87, 123); // error
        ^" in f5a{<inapplicable>}.(42, 87, 123);
@@ -200,17 +200,17 @@ Try removing the extra positional arguments.
   self::expect(null, c6a.{self::Class6::field2}{core::int?});
   self::expect(87, c6a.{self::Class6::field3}{core::int});
   () → Null {
-    let final Never #t6 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:142:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(); // error
        ^" in f6a{<inapplicable>}.();
-    let final Never #t7 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:143:8: Error: Required named parameter 'field3' must be provided.
     f6a(42); // error
        ^" in f6a{<inapplicable>}.(42);
-    let final Never #t8 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:144:8: Error: Too many positional arguments: 1 allowed, but 2 found.
 Try removing the extra positional arguments.
     f6a(42, 87); // error
        ^" in f6a{<inapplicable>}.(42, 87);
-    let final Never #t9 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
+    invalid-expression "pkg/front_end/testcases/constructor_tearoffs/redirecting_factory_tear_off.dart:145:8: Error: Too few positional arguments: 1 required, 0 given.
     f6a(field1: 87, field2: 87); // error
        ^" in f6a{<inapplicable>}.(field1: 87, field2: 87);
   };

pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart.strong.expect

@@ -75,7 +75,7 @@ static method test7() → () → self::B<core::String>
 static method test8() → () → self::B<core::String>
   return #C4;
 static method test9() → () → self::B<core::num>
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:33:30: Error: A value of type 'B<String> Function()' can't be returned from a function with return type 'B<num> Function()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:33:30: Error: A value of type 'B<String> Function()' can't be returned from a function with return type 'B<num> Function()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<num> Function() test9() => DB1.new; // Error.
                              ^" in (#C4) as{TypeError,ForNonNullableByDefault} () → self::B<core::num>;
@@ -94,13 +94,13 @@ static method test15() → () → self::B<core::num>
 static method test16() → <Y extends core::num = dynamic>() → self::B<Y>
   return #C12;
 static method test17() → <Y extends core::Object? = dynamic>() → self::B<Y%>
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be returned from a function with return type 'B<Y> Function<Y>()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be returned from a function with return type 'B<Y> Function<Y>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y>() test17() => DB2.new; // Error.
-                               ^" in (let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be assigned to a variable of type 'B<Y> Function<Y>()'.
+                               ^" in invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be assigned to a variable of type 'B<Y> Function<Y>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y>() test17() => DB2.new; // Error.
-                               ^" in (#C12) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%>) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%>;
+                               ^" in (#C12) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%> as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%>;
 static method test18() → () → self::B<core::num>
   return #C9;
 static method test19() → () → self::B<core::num>
@@ -112,13 +112,13 @@ static method test21() → () → self::B<core::num>
 static method test22() → <Y extends core::num = dynamic, Z extends core::String = dynamic>() → self::B<Y>
   return #C13;
 static method test23() → <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>
-  return let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be returned from a function with return type 'B<Y> Function<Y, Z>()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be returned from a function with return type 'B<Y> Function<Y, Z>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y, Z>() test23() => DB3.new; // Error.
-                                  ^" in (let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be assigned to a variable of type 'B<Y> Function<Y, Z>()'.
+                                  ^" in invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be assigned to a variable of type 'B<Y> Function<Y, Z>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y, Z>() test23() => DB3.new; // Error.
-                                  ^" in (#C13) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>;
+                                  ^" in (#C13) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%> as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>;
 static method test24() → () → self::B<core::String>
   return #C14;
 static method main() → dynamic {}

pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart.strong.transformed.expect

@@ -75,7 +75,7 @@ static method test7() → () → self::B<core::String>
 static method test8() → () → self::B<core::String>
   return #C4;
 static method test9() → () → self::B<core::num>
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:33:30: Error: A value of type 'B<String> Function()' can't be returned from a function with return type 'B<num> Function()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:33:30: Error: A value of type 'B<String> Function()' can't be returned from a function with return type 'B<num> Function()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<num> Function() test9() => DB1.new; // Error.
                              ^" in (#C4) as{TypeError,ForNonNullableByDefault} () → self::B<core::num>;
@@ -94,10 +94,10 @@ static method test15() → () → self::B<core::num>
 static method test16() → <Y extends core::num = dynamic>() → self::B<Y>
   return #C12;
 static method test17() → <Y extends core::Object? = dynamic>() → self::B<Y%>
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be returned from a function with return type 'B<Y> Function<Y>()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be returned from a function with return type 'B<Y> Function<Y>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y>() test17() => DB2.new; // Error.
-                               ^" in let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be assigned to a variable of type 'B<Y> Function<Y>()'.
+                               ^" in invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be assigned to a variable of type 'B<Y> Function<Y>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y>() test17() => DB2.new; // Error.
                                ^" in (#C12) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%>;
@@ -112,10 +112,10 @@ static method test21() → () → self::B<core::num>
 static method test22() → <Y extends core::num = dynamic, Z extends core::String = dynamic>() → self::B<Y>
   return #C13;
 static method test23() → <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>
-  return let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be returned from a function with return type 'B<Y> Function<Y, Z>()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be returned from a function with return type 'B<Y> Function<Y, Z>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y, Z>() test23() => DB3.new; // Error.
-                                  ^" in let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be assigned to a variable of type 'B<Y> Function<Y, Z>()'.
+                                  ^" in invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be assigned to a variable of type 'B<Y> Function<Y, Z>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y, Z>() test23() => DB3.new; // Error.
                                   ^" in (#C13) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>;

pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart.weak.expect

@@ -75,7 +75,7 @@ static method test7() → () → self::B<core::String>
 static method test8() → () → self::B<core::String>
   return #C4;
 static method test9() → () → self::B<core::num>
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:33:30: Error: A value of type 'B<String> Function()' can't be returned from a function with return type 'B<num> Function()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:33:30: Error: A value of type 'B<String> Function()' can't be returned from a function with return type 'B<num> Function()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<num> Function() test9() => DB1.new; // Error.
                              ^" in (#C4) as{TypeError,ForNonNullableByDefault} () → self::B<core::num>;
@@ -94,13 +94,13 @@ static method test15() → () → self::B<core::num>
 static method test16() → <Y extends core::num = dynamic>() → self::B<Y>
   return #C12;
 static method test17() → <Y extends core::Object? = dynamic>() → self::B<Y%>
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be returned from a function with return type 'B<Y> Function<Y>()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be returned from a function with return type 'B<Y> Function<Y>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y>() test17() => DB2.new; // Error.
-                               ^" in (let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be assigned to a variable of type 'B<Y> Function<Y>()'.
+                               ^" in invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be assigned to a variable of type 'B<Y> Function<Y>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y>() test17() => DB2.new; // Error.
-                               ^" in (#C12) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%>) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%>;
+                               ^" in (#C12) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%> as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%>;
 static method test18() → () → self::B<core::num>
   return #C9;
 static method test19() → () → self::B<core::num>
@@ -112,13 +112,13 @@ static method test21() → () → self::B<core::num>
 static method test22() → <Y extends core::num = dynamic, Z extends core::String = dynamic>() → self::B<Y>
   return #C13;
 static method test23() → <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>
-  return let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be returned from a function with return type 'B<Y> Function<Y, Z>()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be returned from a function with return type 'B<Y> Function<Y, Z>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y, Z>() test23() => DB3.new; // Error.
-                                  ^" in (let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be assigned to a variable of type 'B<Y> Function<Y, Z>()'.
+                                  ^" in invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be assigned to a variable of type 'B<Y> Function<Y, Z>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y, Z>() test23() => DB3.new; // Error.
-                                  ^" in (#C13) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>;
+                                  ^" in (#C13) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%> as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>;
 static method test24() → () → self::B<core::String>
   return #C14;
 static method main() → dynamic {}

pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart.weak.transformed.expect

@@ -75,7 +75,7 @@ static method test7() → () → self::B<core::String>
 static method test8() → () → self::B<core::String>
   return #C4;
 static method test9() → () → self::B<core::num>
-  return let final Never #t1 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:33:30: Error: A value of type 'B<String> Function()' can't be returned from a function with return type 'B<num> Function()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:33:30: Error: A value of type 'B<String> Function()' can't be returned from a function with return type 'B<num> Function()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<num> Function() test9() => DB1.new; // Error.
                              ^" in (#C4) as{TypeError,ForNonNullableByDefault} () → self::B<core::num>;
@@ -94,10 +94,10 @@ static method test15() → () → self::B<core::num>
 static method test16() → <Y extends core::num = dynamic>() → self::B<Y>
   return #C12;
 static method test17() → <Y extends core::Object? = dynamic>() → self::B<Y%>
-  return let final Never #t2 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be returned from a function with return type 'B<Y> Function<Y>()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be returned from a function with return type 'B<Y> Function<Y>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y>() test17() => DB2.new; // Error.
-                               ^" in let final Never #t3 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be assigned to a variable of type 'B<Y> Function<Y>()'.
+                               ^" in invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:42:32: Error: A value of type 'B<X> Function<X extends num>()' can't be assigned to a variable of type 'B<Y> Function<Y>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y>() test17() => DB2.new; // Error.
                                ^" in (#C12) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic>() → self::B<Y%>;
@@ -112,10 +112,10 @@ static method test21() → () → self::B<core::num>
 static method test22() → <Y extends core::num = dynamic, Z extends core::String = dynamic>() → self::B<Y>
   return #C13;
 static method test23() → <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>
-  return let final Never #t4 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be returned from a function with return type 'B<Y> Function<Y, Z>()'.
+  return invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be returned from a function with return type 'B<Y> Function<Y, Z>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y, Z>() test23() => DB3.new; // Error.
-                                  ^" in let final Never #t5 = invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be assigned to a variable of type 'B<Y> Function<Y, Z>()'.
+                                  ^" in invalid-expression "pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart:49:35: Error: A value of type 'B<X> Function<X extends num, Y extends String>()' can't be assigned to a variable of type 'B<Y> Function<Y, Z>()'.
  - 'B' is from 'pkg/front_end/testcases/constructor_tearoffs/typedef_tearoffs.dart'.
 B<Y> Function<Y, Z>() test23() => DB3.new; // Error.
                                   ^" in (#C13) as{TypeError,ForNonNullableByDefault} <Y extends core::Object? = dynamic, Z extends core::Object? = dynamic>() → self::B<Y%>;

pkg/front_end/testcases/expression/class_invalid_static_capture.expression.yaml.expect

@@ -7,6 +7,6 @@ Errors: {
               ^
 }
 static method /* from org-dartlang-debug:synthetic_debug_expression */ debugExpr() → dynamic
-  return () → dynamic {
-    return invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:13: Error: Getter not found: 'x'.\n() { return x + y; }\n            ^"{dynamic}.+(invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:17: Error: Getter not found: 'y'.\n() { return x + y; }\n                ^");
+  return () → invalid-type {
+    return invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:13: Error: Getter not found: 'x'.\n() { return x + y; }\n            ^"{<invalid>}.+(invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:17: Error: Getter not found: 'y'.\n() { return x + y; }\n                ^");
   };

pkg/front_end/testcases/expression/invalid.expression.yaml.expect

@@ -11,4 +11,4 @@ Errors: {
    ^^^
 }
 method /* from org-dartlang-debug:synthetic_debug_expression */ debugExpr() → dynamic
-  return invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:1: Error: This couldn't be parsed.\n*foo(3,\n^"{dynamic}.*(invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:2: Error: Method not found: 'foo'.\n*foo(3,\n ^^^");
+  return invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:1: Error: This couldn't be parsed.\n*foo(3,\n^"{<invalid>}.*(invalid-expression "org-dartlang-debug:synthetic_debug_expression:1:2: Error: Method not found: 'foo'.\n*foo(3,\n ^^^");

pkg/front_end/testcases/expression/type_param_shadow_arg_ctor_inferred.expression.yaml.expect

@@ -6,5 +6,5 @@ Errors: {
 }
 method /* from org-dartlang-debug:synthetic_debug_expression */ debugExpr<T extends dynamic>() → dynamic
   return () → Null {
-    main::A::debugExpr::T* k = let final Never* #t1 = invalid-expression "org-dartlang-debug:synthetic_debug_expression:2:13: Error: A value of type 'A<dynamic>' can't be assigned to a variable of type 'T'.\n - 'A' is from 'pkg/front_end/testcases/expression/main.dart'.\n  T k = new A();\n            ^" in new main::A::•<dynamic>() as{TypeError} Never;
+    main::A::debugExpr::T* k = invalid-expression "org-dartlang-debug:synthetic_debug_expression:2:13: Error: A value of type 'A<dynamic>' can't be assigned to a variable of type 'T'.\n - 'A' is from 'pkg/front_end/testcases/expression/main.dart'.\n  T k = new A();\n            ^" in new main::A::•<dynamic>() as{TypeError} Never;
   };

pkg/front_end/testcases/extension_types/simple_setter_resolution.dart.strong.expect

@@ -66,12 +66,12 @@ Try correcting the name to the name of an existing setter, or defining a setter
     ^^^";
   invalid-expression "pkg/front_end/testcases/extension_types/simple_setter_resolution.dart:26:3: Error: Getter not found: 'et'.
   et.foo = 42; // Error.
-  ^^"{dynamic}.foo = 42;
+  ^^"{<invalid>}.foo = 42;
   invalid-expression "pkg/front_end/testcases/extension_types/simple_setter_resolution.dart:27:3: Error: Getter not found: 'et'.
   et.bar = 42; // Error.
-  ^^"{dynamic}.bar = 42;
+  ^^"{<invalid>}.bar = 42;
   invalid-expression "pkg/front_end/testcases/extension_types/simple_setter_resolution.dart:28:3: Error: Getter not found: 'et'.
   et.baz = 42; // Ok.
-  ^^"{dynamic}.baz = 42;
+  ^^"{<invalid>}.baz = 42;
 }
 static method main() → dynamic {}