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 // UNSUPPORTED: c++03 11 12 // <future> 13 14 // class promise<R> 15 16 // promise(); 17 18 #include <future> 19 #include <cassert> 20 21 #include "test_macros.h" 22 main(int,char **)23int main(int, char**) 24 { 25 { 26 std::promise<int> p; 27 std::future<int> f = p.get_future(); 28 assert(f.valid()); 29 } 30 { 31 std::promise<int&> p; 32 std::future<int&> f = p.get_future(); 33 assert(f.valid()); 34 } 35 { 36 std::promise<void> p; 37 std::future<void> f = p.get_future(); 38 assert(f.valid()); 39 } 40 41 return 0; 42 } 43