diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5b1afaabe05..c7459051607 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+Wed Jul 18 12:05:29 2001  Nicola Pero  <n.pero@mi.flashnet.it>
+
+	* gthr-posix.h (__gthread_objc_mutex_trylock): Fixed return value
+	on error.  We can't blindly return the result of
+	pthread_mutex_trylock because it returns a positive number on
+	error, while we must return -1 on error.
+	(__gthread_objc_mutex_lock, __gthread_objc_mutex_unlock): Similar
+	fixes.  
+	Reported by Stephen Brandon <stephen@brandonitconsulting.co.uk>.
+
 2001-07-18  Andreas Jaeger  <aj@suse.de>
 
 	* integrate.c (output_inline_function): Correct type of debug_hooks.