llvm/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_convertible_propagate_const.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11

// <propagate_const>

// template <class U> constexpr propagate_const& operator=(U&& u); // won't bind to propagate_const

#include <experimental/propagate_const>
#include "test_macros.h"
#include "propagate_const_helpers.h"
#include <type_traits>

using std::experimental::propagate_const;

typedef propagate_const<X> PX;
typedef propagate_const<CopyConstructibleFromX> PY;

int main(int, char**) { static_assert(!std::is_assignable<PY, const PX &>::value, "");
  return 0;
}