32 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// UNSUPPORTED: c++0311 12// <future>13 14// class packaged_task<R(ArgTypes...)>15 16// packaged_task();17 18#include <future>19#include <cassert>20 21#include "test_macros.h"22 23struct A {};24 25int main(int, char**)26{27 std::packaged_task<A(int, char)> p;28 assert(!p.valid());29 30 return 0;31}32