libcxx/test/std/thread/futures/futures.promise/copy_assign.verify.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // UNSUPPORTED: no-threads
  10
  11 // <future>
  12
  13 // class promise<R>
  14
  15 // promise& operator=(const promise& rhs) = delete;
  16
  17 #include <future>
  18
  19 void f() {
  20     {
  21         std::promise<int> p0, p;
  22         p = p0; // expected-error {{overload resolution selected deleted operator '='}}
  23     }
  24     {
  25         std::promise<int&> p0, p;
  26         p = p0; // expected-error {{overload resolution selected deleted operator '='}}
  27     }
  28     {
  29         std::promise<void> p0, p;
  30         p = p0; // expected-error {{overload resolution selected deleted operator '='}}
  31     }
  32 }