From: David Vossel <dvossel@digium.com>
Date: Wed, 2 Dec 2009 15:41:36 +0000 (+0000)
Subject: fixes segfault in func_groupcount
X-Git-Tag: 1.4.28-rc1~11^2~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4cfef673d65a818a36eda1e5b1d93d1312d1da18;p=thirdparty%2Fasterisk.git

fixes segfault in func_groupcount

closes issue #16337)
Reported by: Parantido
Patches:
      issue_16337.diff uploaded by dvossel (license 671)
	  Tested by: Parantido, dvossel



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@232268 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/funcs/func_groupcount.c b/funcs/func_groupcount.c
index 7f6f8937bf..b90fe85766 100644
--- a/funcs/func_groupcount.c
+++ b/funcs/func_groupcount.c
@@ -149,6 +149,10 @@ static int group_function_write(struct ast_channel *chan, char *cmd,
 {
 	char grpcat[256];
 
+	if (!value) {
+		return -1;
+	}
+
 	if (!ast_strlen_zero(data)) {
 		snprintf(grpcat, sizeof(grpcat), "%s@%s", value, data);
 	} else {