libcxx/test/std/thread/futures/futures.task/futures.task.nonmembers/uses_allocator.compile.pass.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 // packaged_task allocator support was removed in C++17 (LWG 2976)
  12 // REQUIRES: c++11 || c++14
  13
  14 // <future>
  15
  16 // class packaged_task<R(ArgTypes...)>
  17
  18 // template <class Callable, class Alloc>
  19 //   struct uses_allocator<packaged_task<Callable>, Alloc>
  20 //      : true_type { };
  21
  22 #include <future>
  23 #include "test_macros.h"
  24 #include "test_allocator.h"
  25
  26 static_assert((std::uses_allocator<std::packaged_task<double(int, char)>, test_allocator<int> >::value), "");