diff options
Diffstat (limited to 'REORG.TODO/malloc/dynarray_resize_clear.c')
| -rw-r--r-- | REORG.TODO/malloc/dynarray_resize_clear.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/REORG.TODO/malloc/dynarray_resize_clear.c b/REORG.TODO/malloc/dynarray_resize_clear.c new file mode 100644 index 0000000000..0c4ced1d38 --- /dev/null +++ b/REORG.TODO/malloc/dynarray_resize_clear.c @@ -0,0 +1,35 @@ +/* Increase the size of a dynamic array and clear the new part. + Copyright (C) 2017 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 + <http://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) |