# HG changeset patch
# User Claudio Bley <claudio.bley@gmail.com>
# Date 1314778345 -7200
# Node ID eff2fc71e9c121ee77810b3c946f5b452d69bb73
# Parent  4a8142321d8cd40d15a891f1a2b7a42b54a8e875
freopen: Don't crash if the filename argument is NULL.

* lib/freopen.c (rpl_freopen): Don't compare the filename if it is
NULL.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2011-08-31  Claudio Bley  <claudio.bley@gmail.com>  (tiny change)
+
+	freopen: Don't crash if the filename argument is NULL.
+	* lib/freopen.c (rpl_freopen): Don't compare the filename if it is
+	NULL.
+
 2011-08-30  Paul Eggert  <eggert@cs.ucla.edu>
 
 	openat: work around AIX 7.1 fstatat bug
diff --git a/lib/freopen.c b/lib/freopen.c
--- a/lib/freopen.c
+++ b/lib/freopen.c
@@ -41,7 +41,7 @@
 rpl_freopen (const char *filename, const char *mode, FILE *stream)
 {
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-  if (strcmp (filename, "/dev/null") == 0)
+  if (filename != NULL && strcmp (filename, "/dev/null") == 0)
     filename = "NUL";
 #endif