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// Copyright (c) 2019, 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.
// Tests unconstrained inferencing with sound variance.
// SharedOptions=--enable-experiment=variance
class Covariant<out T> {}
class Contravariant<in T> {}
class Invariant<inout T> {}
void covariantListInfer<T>(Covariant<List<T>> x) {}
void contravariantListInfer<T>(Contravariant<List<T>> x) {}
void invariantListInfer<T>(Invariant<List<T>> x) {}
main() {
var cov = new Covariant();
var contra = new Contravariant();
var inv = new Invariant();