1/* Increase the size of a dynamic array and clear the new part.
2 Copyright (C) 2017-2020 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <dynarray.h>
20#include <stdlib.h>
21#include <string.h>
22
23bool
24__libc_dynarray_resize_clear (struct dynarray_header *list, size_t size,
25 void *scratch, size_t element_size)
26{
27 size_t old_size = list->used;
28 if (!__libc_dynarray_resize (list, size, scratch, element_size))
29 return false;
30 /* __libc_dynarray_resize already checked for overflow. */
31 memset (list->array + (old_size * element_size), 0,
32 (size - old_size) * element_size);
33 return true;
34}
35libc_hidden_def (__libc_dynarray_resize_clear)
36