blob: 3b3eaf16e6b09873a8961e166b532fa90e149dbb [file] [log] [blame]
// 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.
// @dart = 2.9
class M<U extends V, V> {}
class N<U, V extends U> {}
class S<T> {}
class MNA<U, V extends U, W> extends S<List<U>>
with M<V, U>, N<List<W>, List<W>> {}
class MNA2<U, V extends U, W> = S<List<U>> with M<V, U>, N<List<W>, List<W>>;
main() {
new MNA<num, int, bool>();
new MNA2<num, int, bool>();
// Type parameter U of M must extend type parameter V, but
// type argument num is not a subtype of int.
new MNA<int, num, bool>();
// ^
// [cfe] Type argument 'num' doesn't conform to the bound 'U' of the type variable 'V' on 'MNA'.
// ^^^
// [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS
// Type parameter U of M must extend type parameter V, but
// type argument num is not a subtype of int.
new MNA2<int, num, bool>();
// ^
// [cfe] Type argument 'num' doesn't conform to the bound 'U' of the type variable 'V' on 'MNA2'.
// ^^^
// [analyzer] COMPILE_TIME_ERROR.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS
}