From: Rich Felker <dalias@aerifal.cx>
Date: Tue, 29 Mar 2011 02:22:54 +0000 (-0400)
Subject: fix broken spinlock due to miscompilation
X-Git-Tag: v0.7.5~33
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=117581ca69ec2a9c341390eed353646b47a512df;p=oweals%2Fmusl.git

fix broken spinlock due to miscompilation

actually this trick also seems to have made the uncontended case slower.
---

diff --git a/src/thread/pthread_spin_lock.c b/src/thread/pthread_spin_lock.c
index 9e43f475..59fa6ea8 100644
--- a/src/thread/pthread_spin_lock.c
+++ b/src/thread/pthread_spin_lock.c
@@ -2,6 +2,6 @@
 
 int pthread_spin_lock(pthread_spinlock_t *s)
 {
-	while (*s || a_xchg(s, 1));
+	while (a_xchg(s, 1));
 	return 0;
 }