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57d452dbf7
Bug: Change-Id: I67bba5c5049c62b8313d49efe36c81fc600b995a Reviewed-on: https://dart-review.googlesource.com/7847 Commit-Queue: Phil Quitslund <pquitslund@google.com> Reviewed-by: Ben Konyi <bkonyi@google.com>
27 lines
859 B
Dart
27 lines
859 B
Dart
// Copyright (c) 2015, 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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class M<U extends V, V> {}
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class N<U, V extends U> {}
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class S<T> {}
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class MNA<U, V extends U, W> extends S<List<U>>
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with M<V, U>, N<List<W>, List<W>> {}
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class MNA2<U, V extends U, W> = S<List<U>> with M<V, U>, N<List<W>, List<W>>;
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main() {
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new MNA<num, int, bool>();
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new MNA2<num, int, bool>();
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// Type parameter U of M must extend type parameter V, but
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// type argument num is not a subtype of int.
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new MNA<int, num, bool>(); //# 01: compile-time error
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// Type parameter U of M must extend type parameter V, but
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// type argument num is not a subtype of int.
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new MNA2<int, num, bool>(); //# 02: compile-time error
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}
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