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// <functional> 11 12// class function<R(ArgTypes...)> 13 14// explicit function(); 15 16#include <functional> 17#include <cassert> 18 19int main() 20{ 21 std::function<int(int)> f; 22 assert(!f); 23} 24