From 414f4bd7e70d94025576d9264c86da63c506f6ca Mon Sep 17 00:00:00 2001
From: rpj <rpj>
Date: Wed, 13 Aug 2003 15:10:53 +0000
Subject: Bug fixes plus adaptation to current MinGW/MsysDTK environment.
 Changes to tests/benchmarks.

---
 pthread_spin_unlock.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

(limited to 'pthread_spin_unlock.c')

diff --git a/pthread_spin_unlock.c b/pthread_spin_unlock.c
index 30c11d4..7b77395 100644
--- a/pthread_spin_unlock.c
+++ b/pthread_spin_unlock.c
@@ -38,13 +38,17 @@
 #include "implement.h"
 
 
-/*
- * NOTE: For speed, these routines don't check if "lock" is valid.
- */
 int
 pthread_spin_unlock(pthread_spinlock_t *lock)
 {
-  register pthread_spinlock_t s = *lock;
+  register pthread_spinlock_t s;
+
+  if (NULL == lock || NULL == *lock)
+    {
+      return(EINVAL);
+    }
+
+  s = *lock;
 
   if (s == PTHREAD_SPINLOCK_INITIALIZER)
     {
-- 
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