-/* strerror.c --- ANSI C compatible system error routine
+/* strerror.c --- POSIX compatible system error routine
- Copyright (C) 1986, 1988, 1989, 1991, 2002, 2003 Free Software
- Foundation, Inc.
+ Copyright (C) 2007 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ 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
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
+
+#include <string.h>
+
+#if REPLACE_STRERROR
+
+# include <stdio.h>
-#include <limits.h>
+# include "intprops.h"
-/* Don't include <stdio.h>, since it may or may not declare
- sys_errlist and its declarations may collide with ours. Just
- declare the stuff that we need directly. Standard hosted C89
- implementations define strerror and they don't need this strerror
- function, so take some liberties with the standard to cater to
- ancient or limited freestanding implementations. */
-int sprintf (char *, char const *, ...);
-extern int sys_nerr;
-extern char *sys_errlist[];
+# undef strerror
+# if ! HAVE_DECL_STRERROR
+# define strerror(n) NULL
+# endif
char *
-strerror (int n)
+rpl_strerror (int n)
{
- static char const fmt[] = "Unknown error (%d)";
- static char mesg[sizeof fmt + sizeof n * CHAR_BIT / 3];
+ char *result = strerror (n);
- if (n < 0 || n >= sys_nerr)
+ if (result == NULL || result[0] == '\0')
{
+ static char const fmt[] = "Unknown error (%d)";
+ static char mesg[sizeof fmt + INT_STRLEN_BOUND (n)];
sprintf (mesg, fmt, n);
return mesg;
}
- else
- return sys_errlist[n];
+
+ return result;
}
+
+#endif