Libc-763.13.tar.gz

[apple/libc.git] / pthreads / pthread_mutex_unlock.3

diff --git a/pthreads/pthread_mutex_unlock.3 b/pthreads/pthread_mutex_unlock.3
index 08ef98e80996c1debf6be106feed41c6e795391f..ae29010a7a48e059f3db6ba4da12d20cf28f6777 100644 (file)
--- a/pthreads/pthread_mutex_unlock.3
+++ b/pthreads/pthread_mutex_unlock.3
@@ -46,6 +46,13 @@ then the
 .Fn pthread_mutex_unlock
 function unlocks
 .Fa mutex .
+.Pp
+Calling
+.Fn pthread_mutex_unlock
+with a
+.Fa mutex
+that the calling thread does not hold will result 
+in undefined behavior.
 .Sh RETURN VALUES
 If successful,
 .Fn pthread_mutex_unlock