From ded6cb5f719464649bcb61624d52327ae444bfca Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Fri, 1 Apr 2011 19:53:16 -0400
Subject: [PATCH] use a_store to set cancel flag in pthread_cancel, to ensure a
 barrier

---
 src/thread/pthread_cancel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/thread/pthread_cancel.c b/src/thread/pthread_cancel.c
index 1ff00ad3..c497dbe6 100644
--- a/src/thread/pthread_cancel.c
+++ b/src/thread/pthread_cancel.c
@@ -2,6 +2,6 @@
 
 int pthread_cancel(pthread_t t)
 {
-	t->cancel = 1;
+	a_store(&t->cancel, 1);
 	return pthread_kill(t, SIGCANCEL);
 }