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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
commit96c51a8de18ee0675f48a98649fe25175c6b36f8 (patch)
tree28d93ec58747c49dda536ad7f5ed2a6ff2001783
parent90d612e536ea5a4dea4a94bd3cad1ed3433102dc (diff)
downloadbcm5719-llvm-96c51a8de18ee0675f48a98649fe25175c6b36f8.tar.gz
bcm5719-llvm-96c51a8de18ee0675f48a98649fe25175c6b36f8.zip
Workaround for an... interesting bug in Darwin's pthread_rwlock_init.
llvm-svn: 73806
-rw-r--r--llvm/lib/System/RWMutex.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/System/RWMutex.cpp b/llvm/lib/System/RWMutex.cpp
index cf1aea03ddf..15d98cb8f41 100644
--- a/llvm/lib/System/RWMutex.cpp
+++ b/llvm/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
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