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re PR libstdc++/54861 (std::atomic_signal_fence(std::memory_order_seq_cst) issues unnecessary mfence) 

2012-10-09  Andrew MacLeod  <amacleod@redhat.com>

	PR libstdc++/54861
	* include/bits/atomic_base.h (atomic_signal_fence): Call
	__atomic_signal_fence instead of __atomic_thread_fence.

From-SVN: r192268
This commit is contained in:
Andrew MacLeod 2012-10-09 18:40:02 +00:00 committed by Andrew Macleod
parent e561a9920c
commit 3cedb9108b
2 changed files with 7 additions and 1 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2012-10-09 Andrew MacLeod <amacleod@redhat.com>
PR libstdc++/54861
* include/bits/atomic_base.h (atomic_signal_fence): Call
__atomic_signal_fence instead of __atomic_thread_fence.
2012-10-09 Benjamin Kosnik <bkoz@redhat.com>
* testsuite/20_util/specialized_algorithms/uninitialized_copy/808590.cc:

2
libstdc++-v3/include/bits/atomic_base.h
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@ -74,7 +74,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
inline void
atomic_signal_fence(memory_order __m) noexcept
{ __atomic_thread_fence(__m); }
{ __atomic_signal_fence(__m); }
/// kill_dependency
template<typename _Tp>