39 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8//9// UNSUPPORTED: no-threads10 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 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