From dfbd54466e83b8c545da931db73f6c0ac73ae136 Mon Sep 17 00:00:00 2001
From: Pino Toscano <ptoscano@redhat.com>
Date: Thu, 19 Jul 2018 16:55:58 +0200
Subject: [PATCH] * src/fa.c (fa_dot_debug): check result of fopen

Return earlier if fopen fails, otherwise fa_dot will dereference a null
pointer.

(cherry picked from commit 2fd3692404cd4290f106bc6886e6cba949452fa0)
---
 src/fa.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/fa.c b/src/fa.c
index 412d1394..8e1d7d47 100644
--- a/src/fa.c
+++ b/src/fa.c
@@ -286,6 +286,11 @@ static void fa_dot_debug(struct fa *fa, const char *tag) {
         return;
 
     fp = fopen(fname, "w");
+    if (fp == NULL) {
+        free(fname);
+        return;
+    }
+
     fa_dot(fp, fa);
     fclose(fp);
     free(fname);
-- 
2.17.2