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 packaged_task<R(ArgTypes...)> 16 17// packaged_task(); 18 19#include <future> 20#include <cassert> 21 22struct A {}; 23 24int main() 25{ 26 std::packaged_task<A(int, char)> p; 27 assert(!p.valid()); 28} 29