Casey Carter b4437992ec [libc++][test] Disable test for extension that's unsupportable in C++20
Defining the nested types `reference` and `iterator_concept` of `reverse_iterator<I>` necessarily requires `I` to be complete in C++20. These tests that verify that `std::map<int, X>::reverse_iterator` can be instantiated when `X` is incomplete are going to have a bad time.

Differential Revision: https://reviews.llvm.org/D78944
2020-04-27 13:06:31 -07:00

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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <map>
// class multimap
// multimap();
#include <map>
#include "test_macros.h"
struct X
{
std::multimap<int, X> m;
std::multimap<int, X>::iterator i;
std::multimap<int, X>::const_iterator ci;
#if TEST_STD_VER <= 17
// These reverse_iterator specializations require X to be complete in C++20.
std::multimap<int, X>::reverse_iterator ri;
std::multimap<int, X>::const_reverse_iterator cri;
#endif // TEST_STD_VER <= 17
};
int main(int, char**) { return 0; }