Robert Nystrom
fc1b1ecc71
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>
34 lines
845 B
Dart
34 lines
845 B
Dart
// 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.
|
|
|
|
// This test exercises a corner case of override checking that is safe from a
|
|
// soundness perspective, but which we haven't decided whether or not to allow
|
|
// from a usability perspective.
|
|
|
|
class A {
|
|
void foo() {}
|
|
}
|
|
|
|
abstract class B extends A {
|
|
// If this class were concrete, there would be a problem, since `new
|
|
// B().foo(42)` would be statically allowed, but would lead to invalid
|
|
// arguments being passed to A.foo. But since the class is abstract, there is
|
|
// no problem.
|
|
void foo([x]);
|
|
}
|
|
|
|
class C extends B {
|
|
void foo([x]) {
|
|
super.foo();
|
|
}
|
|
}
|
|
|
|
void f(B b) {
|
|
b.foo(42);
|
|
}
|
|
|
|
main() {
|
|
f(new C());
|
|
}
|