Update.
[glibc.git] / stdio-common / perror.c
blob4c29cb09e12e4de398996271d345fc9d3edbd8cb
1 /* Copyright (C) 1991, 1992, 1993, 1997, 1998 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
19 #include <stdio.h>
20 #include <string.h>
21 #include <errno.h>
23 /* Print a line on stderr consisting of the text in S, a colon, a space,
24 a message describing the meaning of the contents of `errno' and a newline.
25 If S is NULL or "", the colon and space are omitted. */
26 void
27 perror (const char *s)
29 char buf[1024];
30 int errnum = errno;
31 const char *colon;
33 if (s == NULL || *s == '\0')
34 s = colon = "";
35 else
36 colon = ": ";
38 (void) fprintf (stderr, "%s%s%s\n",
39 s, colon, __strerror_r (errnum, buf, sizeof buf));