From: Guus Sliepen <guus@meshlink.io>
Date: Sun, 18 Oct 2015 11:45:16 +0000 (+0200)
Subject: Fix check for return value of malloc(), allow initially zero length buffer.
X-Git-Url: https://git.meshlink.io/?a=commitdiff_plain;h=3c10b4a62f71cdc92e7dea3ace931ec1f497a660;p=utcp

Fix check for return value of malloc(), allow initially zero length buffer.
---

diff --git a/utcp.c b/utcp.c
index e6f6cf9..9434c70 100644
--- a/utcp.c
+++ b/utcp.c
@@ -197,9 +197,11 @@ static ssize_t buffer_copy(struct buffer *buf, void *data, size_t offset, size_t
 
 static bool buffer_init(struct buffer *buf, uint32_t len, uint32_t maxlen) {
 	memset(buf, 0, sizeof *buf);
-	buf->data = malloc(len);
-	if(!len)
-		return false;
+	if(len) {
+		buf->data = malloc(len);
+		if(!buf->data)
+			return false;
+	}
 	buf->size = len;
 	buf->maxsize = maxlen;
 	return true;