49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/* Copyright (C) 1991,1992,1993,1997,1998,2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <wchar.h>
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/* Print a line on stderr consisting of the text in S, a colon, a space,
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a message describing the meaning of the contents of `errno' and a newline.
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If S is NULL or "", the colon and space are omitted. */
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void
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perror (const char *s)
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{
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char buf[1024];
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int errnum = errno;
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const char *colon;
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const char *errstring;
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if (s == NULL || *s == '\0')
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s = colon = "";
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else
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colon = ": ";
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errstring = __strerror_r (errnum, buf, sizeof buf);
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#ifdef USE_IN_LIBIO
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if (fwide (stderr, 0) > 0)
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(void) fwprintf (stderr, L"%s%s%s\n", s, colon, errstring);
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else
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#endif
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(void) fprintf (stderr, "%s%s%s\n", s, colon, errstring);
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}
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