// Copyright (c) 2018, 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 We say that a type T0 is a subtype of a type T1 (written T0 <: T1)
/// when:
/// Left Bottom: if T0 is Never then T0 <: T1
/// @description Check that if type T0 is Never then T0 is a subtype of T1
/// @author sgrekhov@unipro.ru


class T1 {}

test(Never n) {
  T1 t1 = n;
  (T1 t){}(n);
  foo(n);
}

foo(T1 t) {}

main() {
}
