From 8307fb23bd5646568044cb75abc5e505c47d312a Mon Sep 17 00:00:00 2001
From: Jia Zhouyang <jiazhouyang@nudt.edu.cn>
Date: Thu, 1 Mar 2018 16:25:36 +0800
Subject: [PATCH] MDEV-15550 Add error handling for fopen

Print error message and return when fopen fails.

Closes #634
---
 client/mysql_plugin.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/client/mysql_plugin.c b/client/mysql_plugin.c
index 81677ad551f..d297f3cd03e 100644
--- a/client/mysql_plugin.c
+++ b/client/mysql_plugin.c
@@ -365,6 +365,12 @@ static int get_default_values()
     }
     /* Now open the file and read the defaults we want. */
     file= fopen(defaults_file, "r");
+    if (file == NULL)
+    {
+      fprintf(stderr, "ERROR: failed to open file %s: %s.\n", defaults_file,
+              strerror(errno));
+      goto exit;
+    }
     while (fgets(line, FN_REFLEN, file) != NULL)
     {
       char *value= 0;