From 73b963445ba402fb33326eb6fae307c19cf47f5e Mon Sep 17 00:00:00 2001
From: David Vossel <dvossel@digium.com>
Date: Wed, 2 Dec 2009 15:43:27 +0000
Subject: [PATCH] Merged revisions 232269 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/trunk

................
  r232269 | dvossel | 2009-12-02 09:42:54 -0600 (Wed, 02 Dec 2009) | 15 lines

  Merged revisions 232268 via svnmerge from
  https://origsvn.digium.com/svn/asterisk/branches/1.4

  ........
    r232268 | dvossel | 2009-12-02 09:41:36 -0600 (Wed, 02 Dec 2009) | 9 lines

    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/1.6.2@232270 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 funcs/func_groupcount.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/funcs/func_groupcount.c b/funcs/func_groupcount.c
index ecb9274678..cfa91c090b 100644
--- a/funcs/func_groupcount.c
+++ b/funcs/func_groupcount.c
@@ -194,6 +194,10 @@ static int group_function_write(struct ast_channel *chan, const char *cmd,
 {
 	char grpcat[256];
 
+	if (!value) {
+		return -1;
+	}
+
 	if (!ast_strlen_zero(data)) {
 		snprintf(grpcat, sizeof(grpcat), "%s@%s", value, data);
 	} else {