From: msweet <msweet@a1ca3aef-8c08-0410-bb20-df032aa958be>
Date: Thu, 2 Oct 2014 18:40:12 +0000 (+0000)
Subject: Protect against NULL collection values (<rdar://problem/17903871>)
X-Git-Tag: v2.2b1~467
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c69d4628c8f94c68e307a41de7528ae097e953a;p=thirdparty%2Fcups.git

Protect against NULL collection values (<rdar://problem/17903871>)


git-svn-id: svn+ssh://src.apple.com/svn/cups/cups.org/trunk@12193 a1ca3aef-8c08-0410-bb20-df032aa958be
---

diff --git a/cups/ipp-support.c b/cups/ipp-support.c
index 895e6fc430..1964ad00b8 100644
--- a/cups/ipp-support.c
+++ b/cups/ipp-support.c
@@ -2223,6 +2223,14 @@ ipp_col_string(ipp_t  *col,		/* I - Collection attribute */
   ipp_attribute_t	*attr;		/* Current member attribute */
 
 
+  if (!col)
+  {
+    if (buffer)
+      *buffer = '\0';
+
+    return (0);
+  }
+
   bufptr = buffer;
   bufend = buffer + bufsize - 1;