From d18d581fd0b73f05c6ad6cb8724baa33bd342400 Mon Sep 17 00:00:00 2001
From: Henrik Hautakoski <henrik@fiktivkod.org>
Date: Wed, 4 Jul 2012 13:53:33 +0200
Subject: [PATCH] buffer.c: fix dereference of invalid pointer.

using the pointer 'b->block' when it is possible that
reallocation has moved the memory to another location.
'b->block' may therefore be an invalid pointer in some
cases. use 'ret' intead.
---
 buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/buffer.c b/buffer.c
index f7bf469..0b81feb 100644
--- a/buffer.c
+++ b/buffer.c
@@ -67,7 +67,7 @@ char* buffer_cstr_release(struct buffer *b) {
 		} else {
 			ret = (char *) b->block;
 		}
-		b->block[b->len + 1] = '\0';
+		ret[b->len + 1] = '\0';
 	} else {
 		ret = calloc(1, 1);
 	}