From e0a8fc8c0ee9e54bc2cae5bfb1941000d7275516 Mon Sep 17 00:00:00 2001
From: David Vossel <dvossel@digium.com>
Date: Thu, 16 Jul 2009 21:25:22 +0000
Subject: [PATCH] Merged revisions 206867 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r206867 | dvossel | 2009-07-16 16:24:16 -0500 (Thu, 16 Jul 2009) | 8 lines

  avoid segfault caused by user error

  If the CALLERPRES() dialplan function is set to nothing,
  a segfault occurs.  This is user error to begin with, but
  I'd rather see a cli warning message than have Asterisk
  crash on me.
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@206868 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 main/callerid.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/main/callerid.c b/main/callerid.c
index 57119958a2..0f2110c3fd 100644
--- a/main/callerid.c
+++ b/main/callerid.c
@@ -1124,6 +1124,9 @@ static const struct ast_value_translation pres_types[] = {
 int ast_parse_caller_presentation(const char *data)
 {
 	int index;
+	if (!data) {
+		return -1;
+	}
 
 	for (index = 0; index < ARRAY_LEN(pres_types); ++index) {
 		if (!strcasecmp(pres_types[index].name, data)) {