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/* Copyright (C) 1991,1992,1993,1997,1998,2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <wchar.h>
/* Print a line on stderr consisting of the text in S, a colon, a space,
a message describing the meaning of the contents of `errno' and a newline.
If S is NULL or "", the colon and space are omitted. */
void
perror (const char *s)
{
char buf[1024];
int errnum = errno;
const char *colon;
const char *errstring;
if (s == NULL || *s == '\0')
s = colon = "";
else
colon = ": ";
errstring = __strerror_r (errnum, buf, sizeof buf);
#ifdef USE_IN_LIBIO
if (fwide (stderr, 0) > 0)
(void) fwprintf (stderr, L"%s%s%s\n", s, colon, errstring);
else
#endif
(void) fprintf (stderr, "%s%s%s\n", s, colon, errstring);
}
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