Fix a seg fault when running this application with no arguments from AGI.

(issue #8905, junky)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@52137 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/apps/app_groupcount.c b/apps/app_groupcount.c
index e44451370f4997ee0375b12f43a1abc2abc4a284..87d313209e248a1e292f57ca66dae95ea6a22bec 100644 (file)
--- a/apps/app_groupcount.c
+++ b/apps/app_groupcount.c
@@ -155,6 +155,11 @@ static int group_check_exec(struct ast_channel *chan, void *data)
                deprecation_warning = 1;
        }
 
+       if (ast_strlen_zero(data)) {
+               ast_log(LOG_WARNING, "CheckGroup requires an argument(max[@category][|options])\n");
+               return 0;
+       }
+
        if (!(parse = ast_strdupa(data))) {
                ast_log(LOG_WARNING, "Memory Error!\n");
                LOCAL_USER_REMOVE(u);