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// template<class F> function(F);
15
16// Allow incomplete argument types in the __is_callable check
17
18#include <functional>
19
20struct X{
21    typedef std::function<void(X&)> callback_type;
22    virtual ~X() {}
23private:
24    callback_type _cb;
25};
26
27int main()
28{
29}
30