annotate lib/perror.c @ 17363:5a51fb7777a9

sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 19 Mar 2013 09:08:47 -0700
parents e542fd46ad6f
children 344018b6e5d7
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1 /* Print a message describing error code.
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2 Copyright (C) 2008-2013 Free Software Foundation, Inc.
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3 Written by Bruno Haible and Simon Josefsson.
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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17
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18 #include <config.h>
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19
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20 /* Specification. */
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21 #include <stdio.h>
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22
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23 #include <errno.h>
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24 #include <stdlib.h>
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25 #include <string.h>
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26
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27 #include "strerror-override.h"
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28
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29 /* Use the system functions, not the gnulib overrides in this file. */
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30 #undef fprintf
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31
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32 void
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33 perror (const char *string)
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34 {
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35 char stackbuf[STACKBUF_LEN];
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36 int ret;
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37
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38 /* Our implementation guarantees that this will be a non-empty
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39 string, even if it returns EINVAL; and stackbuf should be sized
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40 large enough to avoid ERANGE. */
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41 ret = strerror_r (errno, stackbuf, sizeof stackbuf);
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42 if (ret == ERANGE)
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43 abort ();
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44
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45 if (string != NULL && *string != '\0')
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46 fprintf (stderr, "%s: %s\n", string, stackbuf);
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47 else
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48 fprintf (stderr, "%s\n", stackbuf);
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49 }