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 // template <class R, class Alloc>
16 //   struct uses_allocator<promise<R>, Alloc>
17 //      : true_type { };
18 
19 #include <future>
20 #include "test_macros.h"
21 #include "test_allocator.h"
22 
23 int main(int, char**)
24 {
25     static_assert((std::uses_allocator<std::promise<int>, test_allocator<int> >::value), "");
26     static_assert((std::uses_allocator<std::promise<int&>, test_allocator<int> >::value), "");
27     static_assert((std::uses_allocator<std::promise<void>, test_allocator<void> >::value), "");
28 
29   return 0;
30 }
31