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[vm] Enable non-nullable experiment in the VM by default
VM was not performing auto-detection of sound null safety mode if --enable-experiment=non-nullable was not specified on the command line. This change flips that logic to perform auto-detection unless --enable-experiment=no-non-nullable is specified. TEST=Added regression test runtime/tests/vm/dart/regress_44026_test.dart. Fixes https://github.com/dart-lang/sdk/issues/44026 Fixes https://github.com/dart-lang/sdk/issues/44043 Change-Id: Ide8935e90dd3a8bd5a417aeb758605dedbb853eb Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/170201 Commit-Queue: Alexander Markov <alexmarkov@google.com> Reviewed-by: Siva Annamalai <asiva@google.com>
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12
runtime/tests/vm/dart/regress_44026_main.dart
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12
runtime/tests/vm/dart/regress_44026_main.dart
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@ -0,0 +1,12 @@
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// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Main script for regress_44026_test.dart.
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// @dart=2.12
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import 'regress_44026_opt_out_lib.dart';
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void main() {
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sayHello(true);
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}
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14
runtime/tests/vm/dart/regress_44026_opt_out_lib.dart
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runtime/tests/vm/dart/regress_44026_opt_out_lib.dart
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// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Opted-out library for regress_44026_test.dart.
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// @dart = 2.7
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void sayHello(bool t) {
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String s;
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if (t) {
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s = 'hello';
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}
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print(s);
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}
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44
runtime/tests/vm/dart/regress_44026_test.dart
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runtime/tests/vm/dart/regress_44026_test.dart
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@ -0,0 +1,44 @@
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// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// OtherResources=regress_44026_main.dart
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// OtherResources=regress_44026_opt_out_lib.dart
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// Tests that compile-time error is issued if NNBD opted-out library is used
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// from opted-in entry point (with null safety auto-detection).
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// Regression test for https://github.com/dart-lang/sdk/issues/44026.
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import 'dart:io' show File, Platform, Process;
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import 'package:expect/expect.dart';
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import 'package:path/path.dart' as path;
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import 'snapshot_test_helper.dart';
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const int kCompilationErrorExitCode = 254;
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main() async {
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await withTempDir((String temp) async {
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// Need to copy test scripts out of Dart SDK to avoid hardcoded
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// opted-in/opted-out status for Dart SDK tests.
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for (String script in [
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'regress_44026_main.dart',
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'regress_44026_opt_out_lib.dart'
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]) {
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final scriptInTemp = path.join(temp, script);
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File.fromUri(Platform.script.resolve(script)).copySync(scriptInTemp);
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}
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// Do not add Platform.executableArguments into arguments to avoid passing
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// --sound-null-safety / --no-sound-null-safety arguments.
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final result = await Process.run(Platform.executable, [
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path.join(temp, 'regress_44026_main.dart'),
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]);
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print('stdout: ${result.stdout}');
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print('stderr: ${result.stderr}');
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Expect.equals(kCompilationErrorExitCode, result.exitCode);
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Expect.stringContainsInOrder(result.stderr, [
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"Error: A library can't opt out of null safety by default, when using sound null safety."
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]);
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});
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}
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@ -256,6 +256,7 @@ dart/appjit*: SkipByDesign # Test needs to run from source
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dart/kernel_determinism_test: SkipByDesign # Test needs to run from source
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dart/minimal_kernel_test: SkipByDesign # Test needs to run from source
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dart/null_safety_autodetection_in_kernel_compiler_test: SkipByDesign # Test needs to run from source
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dart/regress_44026_test: SkipByDesign # Test needs to run from source
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dart/snapshot_depfile_test: SkipByDesign # Test needs to run from source
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dart/type_casts_with_null_safety_autodetection_test: SkipByDesign # Test needs to run from source
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dart_2/appjit*: SkipByDesign # Test needs to run from source
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@ -806,7 +806,7 @@ bool Dart::DetectNullSafety(const char* script_uri,
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}
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// If we are loading from source, figure out the mode from the source.
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if (KernelIsolate::GetExperimentalFlag("non-nullable")) {
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if (!KernelIsolate::GetExperimentalFlag("no-non-nullable")) {
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return KernelIsolate::DetectNullSafety(script_uri, package_config,
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original_working_directory);
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}
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@ -21,8 +21,8 @@ void main() {
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try {
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// Running from Source.
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testNullSafetyMode(sourcePath, 'Strong Mode');
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// Without the enable experiment option it will be in weak mode.
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testNullSafetyMode1(sourcePath, 'Weak Mode');
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// Without the enable experiment option it will be in strong mode.
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testNullSafetyMode1(sourcePath, 'Strong Mode');
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// Running from Kernel File.
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testNullSafetyMode(dillPath, 'Strong Mode');
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