dart-sdk/tests/language_2/function/type3_test.dart
Robert Nystrom fc1b1ecc71 Move files under language_2 into subdirectories.
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
2019-12-11 19:18:00 +00:00

29 lines
653 B
Dart

// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import "package:expect/expect.dart";
class A<T> {
@pragma('dart2js:noInline')
A();
@pragma('dart2js:noInline')
foo() => new B<T>();
}
class B<T> {
T bar() => null;
}
typedef F();
typedef F2(x);
// Dart2js realized that the generic type for A was not needed, but then used
// it nevertheless when it constructed the closure.
main() {
var f = new A<int>().foo().bar;
Expect.isTrue(f is F);
Expect.isFalse(f is F2);
}