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
main()19 int main()
20 {
21 std::function<int(int)> f;
22 assert(!f);
23 }
24