1 files changed, 7 insertions, 3 deletions
diff --git a/pthread_kill.c b/pthread_kill.c
index c40235c..4cb62c1 100644
--- a/pthread_kill.c
+++ b/pthread_kill.c
@@ -74,12 +74,16 @@ pthread_kill (pthread_t thread, int sig)
       */
 {
   int result = 0;
+  ptw32_thread_t * tp;
 
   EnterCriticalSection (&ptw32_thread_reuse_lock);
 
-  if (NULL == thread
-      || NULL == thread->threadH
-      || THREAD_PRIORITY_ERROR_RETURN == GetThreadPriority (thread->threadH))
+  tp = (ptw32_thread_t *) thread.p;
+
+  if (NULL == tp
+      || thread.x != tp->ptHandle.x
+      || NULL == tp->threadH
+      || THREAD_PRIORITY_ERROR_RETURN == GetThreadPriority (tp->threadH))
     {
       result = ESRCH;
     }