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42 lines
1.0 KiB
C++
42 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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// On Windows Clang bugs out when both __declspec and __attribute__ are present,
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// the processing goes awry preventing the definition of the types.
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// XFAIL: LIBCXX-WINDOWS-FIXME
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// UNSUPPORTED: libcpp-has-no-threads
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// REQUIRES: thread-safety
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// <mutex>
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// MODULES_DEFINES: _LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS
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#define _LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS
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#include <mutex>
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#include "test_macros.h"
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std::mutex m;
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int foo __attribute__((guarded_by(m)));
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static void scoped() {
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#if TEST_STD_VER >= 17
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std::scoped_lock<std::mutex> lock(m);
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foo++;
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#endif
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}
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int main(int, char**) {
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scoped();
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std::lock_guard<std::mutex> lock(m);
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foo++;
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return 0;
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}
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