From: Richard Kettlewell <rjk@greenend.org.uk>
Date: Sat, 14 Mar 2009 19:00:52 +0000 (+0000)
Subject: Zero out configuration strings when they are freed.
X-Git-Tag: 5.0~168^2
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/commitdiff_plain/f183d30bc19ccc5dafeb7f469b83a8ce045d9419

Zero out configuration strings when they are freed.
This means that aliased configuration items aren't double-freed.
---

diff --git a/lib/configuration.c b/lib/configuration.c
index 035e814..958ea6c 100644
--- a/lib/configuration.c
+++ b/lib/configuration.c
@@ -498,6 +498,7 @@ static void free_none(struct config attribute((unused)) *c,
 static void free_string(struct config *c,
 			const struct conf *whoami) {
   xfree(VALUE(c, char *));
+  VALUE(c, char *) = 0;
 }
 
 static void free_stringlist(struct config *c,