1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // UNSUPPORTED: c++03
10
11 // <functional>
12
13 #include <functional>
14
15 #include "test_macros.h"
16
17 struct Incomplete;
18 template<class T> struct Holder { T t; };
19 typedef Holder<Incomplete> *Ptr;
20
no_args()21 Ptr no_args() { return nullptr; }
one_arg(Ptr p)22 Ptr one_arg(Ptr p) { return p; }
two_args(Ptr p,Ptr)23 Ptr two_args(Ptr p, Ptr) { return p; }
three_args(Ptr p,Ptr,Ptr)24 Ptr three_args(Ptr p, Ptr, Ptr) { return p; }
four_args(Ptr p,Ptr,Ptr,Ptr)25 Ptr four_args(Ptr p, Ptr, Ptr, Ptr) { return p; }
26
one_arg_void(Ptr)27 void one_arg_void(Ptr) { }
28
main(int,char **)29 int main(int, char**)
30 {
31 Ptr x = nullptr;
32 std::function<Ptr()> f(no_args); f();
33 std::function<Ptr(Ptr)> g(one_arg); g(x);
34 std::function<void(Ptr)> h(one_arg_void); h(x);
35 return 0;
36 }
37