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annotate lib/unistdio/u-vasprintf.h @ 40057:b06060465f09

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maint: Run 'make update-copyright'
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 01 Jan 2019 00:25:11 +0100
parents 10eb9086bea0
children
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1 /* Formatted output to strings.
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2 Copyright (C) 1999, 2002, 2006-2019 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 it
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5 under the terms of the GNU Lesser General Public License as published
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6 by the Free Software Foundation; either version 3 of the License, or
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7 (at your option) 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 GNU
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12 Lesser 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 Lesser General Public License
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15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
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16
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17 int
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18 VASPRINTF (DCHAR_T **resultp, const FCHAR_T *format, va_list args)
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19 {
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20 size_t length;
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21 DCHAR_T *result = VASNPRINTF (NULL, &length, format, args);
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22 if (result == NULL)
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23 return -1;
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24
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25 if (length > INT_MAX)
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26 {
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27 free (result);
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28 errno = EOVERFLOW;
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29 return -1;
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30 }
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31
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32 *resultp = result;
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33 /* Return the number of resulting units, excluding the trailing NUL. */
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34 return length;
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35 }