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 // <functional>
10 
11 // binary_negate
12 //  deprecated in C++17
13 
14 // UNSUPPORTED: c++03, c++11, c++14
15 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS
16 
17 #include <functional>
18 
19 #include "test_macros.h"
20 
21 struct Predicate {
22     typedef int first_argument_type;
23     typedef int second_argument_type;
operator ()Predicate24     bool operator()(first_argument_type, second_argument_type) const { return true; }
25 };
26 
main(int,char **)27 int main(int, char**) {
28     std::binary_negate<Predicate> f((Predicate())); // expected-warning {{'binary_negate<Predicate>' is deprecated}}
29     (void)f;
30 
31     return 0;
32 }
33