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freopen: Don't crash if the filename argument is NULL.
[gnulib.git]
/
lib
/
freopen.c
diff --git
a/lib/freopen.c
b/lib/freopen.c
index
71c663c
..
bae0646
100644
(file)
--- a/
lib/freopen.c
+++ b/
lib/freopen.c
@@
-1,5
+1,5
@@
/* Open a stream to a file.
/* Open a stream to a file.
- Copyright (C) 2007-20
08
Free Software Foundation, Inc.
+ Copyright (C) 2007-20
11
Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@
-16,10
+16,13
@@
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
+/* If the user's config.h happens to include <stdio.h>, let it include only
+ the system's <stdio.h> here, so that orig_freopen doesn't recurse to
+ rpl_freopen. */
+#define __need_FILE
#include <config.h>
/* Get the original definition of freopen. It might be defined as a macro. */
#include <config.h>
/* Get the original definition of freopen. It might be defined as a macro. */
-#define __need_FILE
#include <stdio.h>
#undef __need_FILE
#include <stdio.h>
#undef __need_FILE
@@
-38,7
+41,7
@@
FILE *
rpl_freopen (const char *filename, const char *mode, FILE *stream)
{
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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
filename = "NUL";
#endif