Ensure data's existence before trying to access it. (issue #8774 reported by rcourtna)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@50266 65c4cc65-6c06-0410-ace0-fbb531ad65f3
19 years ago · 59432b9e21
parent 8fb6be645e
commit 59432b9e21
1 changed files with 1 additions and 1 deletions
--- a/main/pbx.c
+++ b/main/pbx.c
@ -1709,7 +1709,7 @@ static void pbx_substitute_variables(char *passdata, int datalen, struct ast_cha
 	memset(passdata, 0, datalen);

 	/* No variables or expressions in e->data, so why scan it? */
-	if (!strchr(e->data, '$') && !strstr(e->data,"${") && !strstr(e->data,"$[") && !strstr(e->data,"$(")) {
+	if (e->data && !strchr(e->data, '$') && !strstr(e->data,"${") && !strstr(e->data,"$[") && !strstr(e->data,"$(")) {
 		ast_copy_string(passdata, e->data, datalen);
 		return;
 	}