46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/* Formatted output to strings.
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Copyright (C) 1999-2025 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include <stdio.h>
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include "vasnprintf.h"
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ptrdiff_t
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vaszprintf (char **resultp, const char *format, va_list args)
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{
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size_t length;
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char *result = vasnprintf (NULL, &length, format, args);
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if (result == NULL)
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return -1;
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if (length > PTRDIFF_MAX)
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{
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free (result);
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errno = ENOMEM;
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return -1;
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}
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*resultp = result;
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/* Return the number of resulting bytes, excluding the trailing NUL. */
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return length;
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}
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