1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <future> 11 12// class promise<R> 13 14// promise(); 15 16#include <future> 17#include <cassert> 18 19int main() 20{ 21 { 22 std::promise<int> p; 23 std::future<int> f = p.get_future(); 24 assert(f.valid()); 25 } 26 { 27 std::promise<int&> p; 28 std::future<int&> f = p.get_future(); 29 assert(f.valid()); 30 } 31 { 32 std::promise<void> p; 33 std::future<void> f = p.get_future(); 34 assert(f.valid()); 35 } 36} 37