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-rw-r--r--winsup/cygwin/thread.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/winsup/cygwin/thread.cc b/winsup/cygwin/thread.cc
index fc2570c..eeaa4ba 100644
--- a/winsup/cygwin/thread.cc
+++ b/winsup/cygwin/thread.cc
@@ -1676,8 +1676,9 @@ semaphore::semaphore (const char *sem_name, int oflag, mode_t mode,
if (oflag & O_CREAT)
{
SECURITY_ATTRIBUTES sa = sec_all;
+ security_descriptor sd;
if (allow_ntsec)
- set_security_attribute (mode, &sa, alloca (4096), 4096);
+ set_security_attribute (mode, &sa, sd);
this->win32_obj_id = ::CreateSemaphore (&sa, value, LONG_MAX, sem_name);
if (!this->win32_obj_id)
magic = 0;