| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++98, c++03, c++11 |
| |
| // <propagate_const> |
| |
| // template <class T> constexpr void swap(propagate_const<T>& x, propagate_const<T>& y); |
| |
| #include <experimental/propagate_const> |
| #include "propagate_const_helpers.h" |
| #include <cassert> |
| |
| using std::experimental::propagate_const; |
| |
| bool swap_called = false; |
| void swap(X &, X &) { swap_called = true; } |
| |
| int main() { |
| typedef propagate_const<X> P; |
| P p1(1); |
| P p2(2); |
| swap(p1, p2); |
| assert(swap_called); |
| } |