From: Rich Felker <dalias@aerifal.cx>
Date: Mon, 3 Oct 2011 04:11:16 +0000 (-0400)
Subject: fix crash if pthread_mutex_unlock is called without ever locking
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=b8688ff87574fad6b3056443a5385010952fb243

fix crash if pthread_mutex_unlock is called without ever locking

this is valid for error-checking mutexes; otherwise it invokes UB and
would be justified in crashing.
---

diff --git a/src/thread/pthread_mutex_unlock.c b/src/thread/pthread_mutex_unlock.c
index 05baec18..6950872b 100644
--- a/src/thread/pthread_mutex_unlock.c
+++ b/src/thread/pthread_mutex_unlock.c
@@ -9,7 +9,7 @@ int pthread_mutex_unlock(pthread_mutex_t *m)
 	if (m->_m_type != PTHREAD_MUTEX_NORMAL) {
 		if (!m->_m_lock)
 			return EPERM;
-		self = __pthread_self();
+		self = pthread_self();
 		if ((m->_m_lock&0x1fffffff) != self->tid)
 			return EPERM;
 		if ((m->_m_type&3) == PTHREAD_MUTEX_RECURSIVE && m->_m_count)