cc2e93cff0
Fixes a small omission in libcxx that prevents libcxx being built when -DLIBCXX_ENABLE_EXCEPTIONS=0 is specified. This patch adds XFAILS to all those tests that are currently failing on the new -fno-exceptions library variant. Follow-up patches will update the tests (progressively) to cope with the new library variant. Change-Id: I4b801bd8d8e4fe7193df9e55f39f1f393a8ba81a git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@252598 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
1.3 KiB
C++
66 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// XFAIL: libcpp-no-exceptions
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// UNSUPPORTED: libcpp-has-no-threads
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// <mutex>
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// template <class Mutex> class unique_lock;
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// bool try_lock();
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#include <mutex>
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#include <cassert>
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bool try_lock_called = false;
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struct mutex
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{
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bool try_lock()
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{
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try_lock_called = !try_lock_called;
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return try_lock_called;
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}
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void unlock() {}
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};
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mutex m;
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int main()
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{
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std::unique_lock<mutex> lk(m, std::defer_lock);
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assert(lk.try_lock() == true);
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assert(try_lock_called == true);
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assert(lk.owns_lock() == true);
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try
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{
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lk.try_lock();
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assert(false);
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}
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catch (std::system_error& e)
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{
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assert(e.code().value() == EDEADLK);
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}
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lk.unlock();
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assert(lk.try_lock() == false);
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assert(try_lock_called == false);
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assert(lk.owns_lock() == false);
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lk.release();
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try
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{
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lk.try_lock();
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assert(false);
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}
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catch (std::system_error& e)
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{
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assert(e.code().value() == EPERM);
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}
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}
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