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 operator bool() const
15
16 #include <functional>
17 #include <cassert>
18
g(int)19 int g(int) {return 0;}
20
main()21 int main()
22 {
23 {
24 std::function<int(int)> f;
25 assert(!f);
26 f = g;
27 assert(f);
28 }
29 }
30