// 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.

/// @assertion The grammar of expressions is extended to allow any expression to
/// be suffixed with a !.
///
/// @description Check that any expression can be suffixed with a !. Test type
/// aliases
/// @author sgrekhov@unipro.ru

// Requirements=nnbd-strong
class C {}

typedef CAlias = C?;

test(C c) {}

CAlias c = C();

main() {
  test(c!);
}