| //===----------------------------------------------------------------------===// |
| // |
| // 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++98, c++03, c++11 |
| |
| // <propagate_const> |
| |
| // template <class T> constexpr bool operator==(const propagate_const<T>& x, const propagate_const<T>& y); |
| // template <class T> constexpr bool operator==(const T& x, const propagate_const<T>& y); |
| // template <class T> constexpr bool operator==(const propagate_const<T>& x, const T& y); |
| |
| #include <experimental/propagate_const> |
| #include "test_macros.h" |
| #include "propagate_const_helpers.h" |
| #include <cassert> |
| |
| using std::experimental::propagate_const; |
| using std::nullptr_t; |
| |
| constexpr bool operator==(const X &lhs, const X &rhs) { |
| return lhs.i_ == rhs.i_; |
| } |
| |
| constexpr bool operator==(const X &, const nullptr_t &) { |
| return false; |
| } |
| |
| constexpr bool operator==(const nullptr_t &, const X &) { |
| return false; |
| } |
| |
| int main(int, char**) { |
| constexpr X x1_1(1); |
| constexpr X x2_1(1); |
| constexpr X x3_2(2); |
| |
| static_assert(x1_1 == x1_1, ""); |
| static_assert(x1_1 == x2_1, ""); |
| static_assert(!(x1_1 == x3_2), ""); |
| |
| typedef propagate_const<X> P; |
| |
| constexpr P p1_1(1); |
| constexpr P p2_1(1); |
| constexpr P p3_2(2); |
| |
| static_assert(p1_1 == p1_1, ""); |
| static_assert(p1_1 == p2_1, ""); |
| static_assert(!(p1_1 == p3_2), ""); |
| |
| static_assert(x1_1 == p1_1, ""); |
| static_assert(!(x1_1 == p3_2), ""); |
| |
| static_assert(p1_1 == x1_1, ""); |
| static_assert(!(p1_1 == x3_2), ""); |
| |
| static_assert(!(p1_1==nullptr),""); |
| static_assert(!(nullptr==p1_1),""); |
| |
| return 0; |
| } |