From: Nick Mathewson <nickm@torproject.org>
Date: Tue, 8 Mar 2011 04:18:07 +0000 (-0500)
Subject: munge the debug_lock signature before freeing it: it might help us catch use-after... 
X-Git-Tag: release-2.1.1-alpha~301
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f28084ddda02886a97943e36099c4a523f72af0b;p=libevent

munge the debug_lock signature before freeing it: it might help us catch use-after-free
---

diff --git a/evthread.c b/evthread.c
index d9c54787..a8b2534f 100644
--- a/evthread.c
+++ b/evthread.c
@@ -156,6 +156,7 @@ debug_lock_free(void *lock_, unsigned locktype)
 	}
 	lock->lock = NULL;
 	lock->count = -100;
+	lock->signature = 0x12300fda;
 	mm_free(lock);
 }