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/* Increase the size of a dynamic array and clear the new part.
Copyright (C) 2017-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <dynarray.h>
#include <stdlib.h>
#include <string.h>
bool
__libc_dynarray_resize_clear (struct dynarray_header *list, size_t size,
void *scratch, size_t element_size)
{
size_t old_size = list->used;
if (!__libc_dynarray_resize (list, size, scratch, element_size))
return false;
/* __libc_dynarray_resize already checked for overflow. */
memset (list->array + (old_size * element_size), 0,
(size - old_size) * element_size);
return true;
}
libc_hidden_def (__libc_dynarray_resize_clear)
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