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authorOwen Anderson <resistor@mac.com>2009-06-20 00:32:27 +0000
committerOwen Anderson <resistor@mac.com>2009-06-20 00:32:27 +0000
commit107a537db1261c09f8c9639ef7827b12f0812125 (patch)
treea47ed18953b72fb675b4a5fd1aa71abe1bf7a42d /lib/System
parent3964acc2f44ee02cdd4e2a54a5232537bdf3ee73 (diff)
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Workaround for an... interesting bug in Darwin's pthread_rwlock_init.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73806 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/System')
-rw-r--r--lib/System/RWMutex.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/System/RWMutex.cpp b/lib/System/RWMutex.cpp
index cf1aea03dd..15d98cb8f4 100644
--- a/lib/System/RWMutex.cpp
+++ b/lib/System/RWMutex.cpp
@@ -13,6 +13,7 @@
#include "llvm/Config/config.h"
#include "llvm/System/RWMutex.h"
+#include <cstring>
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only TRULY operating system
@@ -64,6 +65,12 @@ RWMutexImpl::RWMutexImpl()
// Declare the pthread_rwlock data structures
pthread_rwlock_t* rwlock =
static_cast<pthread_rwlock_t*>(malloc(sizeof(pthread_rwlock_t)));
+
+#ifdef __APPLE__
+ // Workaround a bug/mis-feature in Darwin's pthread_rwlock_init.
+ bzero(rwlock, sizeof(pthread_rwlock_t));
+#endif
+
pthread_rwlockattr_t attr;
// Initialize the rwlock attributes