From 3878a9bbf79791463bf6acac2a51486b60dfd409 Mon Sep 17 00:00:00 2001
From: Alfonso Gregory <83477269+AtariDreams@users.noreply.github.com>
Date: Mon, 30 Aug 2021 14:07:05 -0400
Subject: [PATCH] Prevent writing to NULL if buffer is NULL

---
 cups/snprintf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cups/snprintf.c b/cups/snprintf.c
index ff680321a0..e4eb3e9757 100644
--- a/cups/snprintf.c
+++ b/cups/snprintf.c
@@ -323,7 +323,8 @@ _cups_vsnprintf(char       *buffer,	/* O - Output buffer */
   * Nul-terminate the string and return the number of characters needed.
   */
 
-  *bufptr = '\0';
+  if (bufptr)
+  	*bufptr = '\0';
 
   return (bytes);
 }
-- 
2.47.2