From 783ee496a6914df68e77e6019054ad91e8ed6420 Mon Sep 17 00:00:00 2001
From: tbeu <tc@tbeu.de>
Date: Thu, 23 Nov 2017 19:50:32 +0100
Subject: [PATCH] Fix null pointer dereference

As reported by honggfuzz
---
 tools/matdump.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/matdump.c b/tools/matdump.c
index bf563e3d..1cabded6 100644
--- a/tools/matdump.c
+++ b/tools/matdump.c
@@ -681,6 +681,10 @@ static void
 print_default_numeric_3d(matvar_t *matvar)
 {
     size_t i, j, k, l, stride;
+
+    if ( NULL == matvar->data )
+        return;
+
     stride = Mat_SizeOf(matvar->data_type);
     if ( matvar->isComplex ) {
         mat_complex_split_t *complex_data = (mat_complex_split_t*)matvar->data;