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