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, c++11
10 
11 // <propagate_const>
12 
13 // template <class T> constexpr void propagate_const::swap(propagate_const<T>& x);
14 
15 #include <experimental/propagate_const>
16 #include "test_macros.h"
17 #include "propagate_const_helpers.h"
18 #include <cassert>
19 
20 using std::experimental::propagate_const;
21 
22 bool swap_called = false;
swap(X &,X &)23 void swap(X &, X &) { swap_called = true; }
24 
main(int,char **)25 int main(int, char**) {
26   typedef propagate_const<X> P;
27   P p1(1);
28   P p2(2);
29   p1.swap(p2);
30   assert(swap_called);
31 
32   return 0;
33 }
34