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: libcpp-has-no-threads 10 11 // <future> 12 13 // class shared_future<R> 14 15 // shared_future(); 16 17 #include <future> 18 #include <cassert> 19 20 #include "test_macros.h" 21 main(int,char **)22int main(int, char**) 23 { 24 { 25 std::shared_future<int> f; 26 assert(!f.valid()); 27 } 28 { 29 std::shared_future<int&> f; 30 assert(!f.valid()); 31 } 32 { 33 std::shared_future<void> f; 34 assert(!f.valid()); 35 } 36 37 return 0; 38 } 39