31cbe0f240
C++98 and C++03 are effectively aliases as far as Clang is concerned. As such, allowing both std=c++98 and std=c++03 as Lit parameters is just slightly confusing, but provides no value. It's similar to allowing both std=c++17 and std=c++1z, which we don't do. This was discovered because we had an internal bot that ran the test suite under both c++98 AND c++03 -- one of which is redundant. Differential Revision: https://reviews.llvm.org/D80926
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <tuple>
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// constexpr unspecified ignore;
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// UNSUPPORTED: c++03
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#include <tuple>
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#include <cassert>
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#include "test_macros.h"
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constexpr bool test_ignore_constexpr()
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{
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#if TEST_STD_VER > 11
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{ // Test that std::ignore provides constexpr converting assignment.
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auto& res = (std::ignore = 42);
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assert(&res == &std::ignore);
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}
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{ // Test that std::ignore provides constexpr copy/move constructors
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auto copy = std::ignore;
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auto moved = std::move(copy);
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((void)moved);
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}
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{ // Test that std::ignore provides constexpr copy/move assignment
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auto copy = std::ignore;
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copy = std::ignore;
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auto moved = std::ignore;
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moved = std::move(copy);
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}
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#endif
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return true;
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}
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int main(int, char**) {
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{
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constexpr auto& ignore_v = std::ignore;
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((void)ignore_v);
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}
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{
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static_assert(test_ignore_constexpr(), "");
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}
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{
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LIBCPP_STATIC_ASSERT(std::is_trivial<decltype(std::ignore)>::value, "");
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}
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return 0;
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}
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