From 55c938636b53bcc8d4bad7a9f58b6efb56f90597 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cenk=20G=C3=BCndo=C4=9Fan?= <cnkgndgn@gmail.com>
Date: Tue, 15 Sep 2015 15:07:29 +0200
Subject: [PATCH] gnrc_pktbuf_static: fix DEBUG

---
 sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c b/sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c
index c58a4c4d35..22167b4838 100644
--- a/sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c
+++ b/sys/net/gnrc/pktbuf_static/gnrc_pktbuf_static.c
@@ -97,7 +97,8 @@ gnrc_pktsnip_t *gnrc_pktbuf_mark(gnrc_pktsnip_t *pkt, size_t size, gnrc_nettype_
     if ((size == 0) || (pkt == NULL) || (size > pkt->size) || (pkt->data == NULL)) {
         DEBUG("pktbuf: size == 0 (was %u) or pkt == NULL (was %p) or "
               "size > pkt->size (was %u) or pkt->data == NULL (was %p)\n",
-              (unsigned)size, (void *)pkt, (unsigned)pkt->size, pkt->data);
+              (unsigned)size, (void *)pkt, (pkt ? (unsigned)pkt->size : 0),
+              (pkt ? pkt->data : NULL));
         mutex_unlock(&_mutex);
         return NULL;
     }