a7f9895cc1
Since those features are general properties of the environment, it makes sense to use them from libc++abi too, and so the name libcpp-has-no-xxx doesn't make sense. Differential Revision: https://reviews.llvm.org/D126482
32 lines
1.0 KiB
C++
32 lines
1.0 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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//
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// UNSUPPORTED: no-threads
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// UNSUPPORTED: c++03, c++11
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// <semaphore>
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// constexpr explicit counting_semaphore(ptrdiff_t desired);
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#include <semaphore>
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#include <type_traits>
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#include "test_macros.h"
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static_assert(!std::is_default_constructible<std::binary_semaphore>::value, "");
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static_assert(!std::is_default_constructible<std::counting_semaphore<>>::value, "");
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static_assert(!std::is_convertible<int, std::binary_semaphore>::value, "");
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static_assert(!std::is_convertible<int, std::counting_semaphore<>>::value, "");
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#if TEST_STD_VER > 17
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// Test constexpr-constructibility. (But not destructibility.)
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constinit std::binary_semaphore bs(1);
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constinit std::counting_semaphore cs(1);
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#endif
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