From 02eff258c6a39746db287e20c142153e80c81bac Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 17 Apr 2011 12:15:55 -0400
Subject: [PATCH] don't use pthread_once when there is no danger in race

---
 src/thread/cancel_impl.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/thread/cancel_impl.c b/src/thread/cancel_impl.c
index 28dc84dc..7bcfaef5 100644
--- a/src/thread/cancel_impl.c
+++ b/src/thread/cancel_impl.c
@@ -71,8 +71,11 @@ static void init_cancellation()
 
 int pthread_cancel(pthread_t t)
 {
-	static pthread_once_t once;
-	pthread_once(&once, init_cancellation);
+	static int init;
+	if (!init) {
+		init_cancellation();
+		init = 1;
+	}
 	a_store(&t->cancel, 1);
 	return pthread_kill(t, SIGCANCEL);
 }