From: Gisle Vanem <gisle.vanem@gmail.com>
Date: Thu, 6 Jul 2017 21:14:29 +0000 (+0200)
Subject: memdebug: don't setbuf() if the file open failed
X-Git-Tag: curl-7_55_0~90
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0cec0f461567c152dd222982d3223dbd5e3423e7;p=curl

memdebug: don't setbuf() if the file open failed

Bug: https://github.com/curl/curl/issues/828#issuecomment-313475151
---

diff --git a/lib/memdebug.c b/lib/memdebug.c
index 2b8808ab0..16434f819 100644
--- a/lib/memdebug.c
+++ b/lib/memdebug.c
@@ -115,7 +115,8 @@ void curl_memdebug(const char *logname)
       logfile = stderr;
 #ifdef MEMDEBUG_LOG_SYNC
     /* Flush the log file after every line so the log isn't lost in a crash */
-    setbuf(logfile, (char *)NULL);
+    if(logfile)
+      setbuf(logfile, (char *)NULL);
 #endif
   }
 }