blob: cb0fa33ea2849cf0f365889fb7e41e3560f5413f [file] [log] [blame]
// Copyright (c) 2017, 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 {}
class B extends A {}
class C<T> {
void Function(T) f<U>(U x) => (y) {};
void test(C<A> cA, C<A> cB) {
// Tear-off of c.f needs to be type checked due to contravariance. The
// instantiation should occur after the type check, so if the type is wrong we
// should get a type error.
void Function(A) Function(int) tearoffOfCA = cA.f;
Expect.throwsTypeError(() {
void Function(A) Function(int) tearoffOfCB = cB.f;
main() {
test(new C<A>(), new C<B>());