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 // UNSUPPORTED: libcpp-has-no-threads 11 // UNSUPPORTED: c++98, c++03 12 13 // <future> 14 15 // class promise<R> 16 17 // promise(); 18 19 #include <future> 20 #include <cassert> 21 22 int main() 23 { 24 { 25 std::promise<int> p; 26 std::future<int> f = p.get_future(); 27 assert(f.valid()); 28 } 29 { 30 std::promise<int&> p; 31 std::future<int&> f = p.get_future(); 32 assert(f.valid()); 33 } 34 { 35 std::promise<void> p; 36 std::future<void> f = p.get_future(); 37 assert(f.valid()); 38 } 39 } 40
