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annotate lib/vasprintf.c @ 17249:e542fd46ad6f

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maint: update all copyright year number ranges Run "make update-copyright". Compare to commit 1602f0a from last year. Signed-off-by: Eric Blake <eblake@redhat.com>
author Eric Blake <eblake@redhat.com>
date Tue, 01 Jan 2013 00:50:58 +0000 (2013-01-01)
parents bb182ee4a09d
children 344018b6e5d7
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1 /* Formatted output to strings.
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2 Copyright (C) 1999, 2002, 2006-2013 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License along
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15 with this program; if not, see <http://www.gnu.org/licenses/>. */
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16
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17 #include <config.h>
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18
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19 /* Specification. */
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20 #ifdef IN_LIBASPRINTF
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21 # include "vasprintf.h"
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22 #else
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23 # include <stdio.h>
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24 #endif
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25
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26 #include <errno.h>
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27 #include <limits.h>
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28 #include <stdlib.h>
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29
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30 #include "vasnprintf.h"
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32 int
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33 vasprintf (char **resultp, const char *format, va_list args)
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34 {
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35 size_t length;
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36 char *result = vasnprintf (NULL, &length, format, args);
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37 if (result == NULL)
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38 return -1;
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39
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40 if (length > INT_MAX)
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41 {
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42 free (result);
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43 errno = EOVERFLOW;
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44 return -1;
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45 }
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46
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47 *resultp = result;
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48 /* Return the number of resulting bytes, excluding the trailing NUL. */
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49 return length;
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50 }