From: Timo Sirainen <timo.sirainen@dovecot.fi>
Date: Fri, 29 Apr 2016 10:55:33 +0000 (+0300)
Subject: lib: buffer_create_dynamic() now adds +1 to init_size
X-Git-Tag: 2.3.0.rc1~3912
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=09539f3db2f1b3e24f40844d8456b06d318d0fe7;p=thirdparty%2Fdovecot%2Fcore.git

lib: buffer_create_dynamic() now adds +1 to init_size
---

diff --git a/src/lib/buffer.c b/src/lib/buffer.c
index 7fb29076f4..aef163595f 100644
--- a/src/lib/buffer.c
+++ b/src/lib/buffer.c
@@ -137,7 +137,10 @@ buffer_t *buffer_create_dynamic(pool_t pool, size_t init_size)
 	buf = p_new(pool, struct real_buffer, 1);
 	buf->pool = pool;
 	buf->dynamic = TRUE;
-	buffer_alloc(buf, init_size);
+	/* buffer_alloc() reserves +1 for str_c() NIL, so add +1 here to
+	   init_size so we can actually write that much to the buffer without
+	   realloc */
+	buffer_alloc(buf, init_size+1);
 	return (buffer_t *)buf;
 }