glibc/malloc/dynarray_finalize.c
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

63 lines
2.1 KiB
C

/* Copy the dynamically-allocated area to an explicitly-sized heap allocation.
Copyright (C) 2017-2021 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_finalize (struct dynarray_header *list,
void *scratch, size_t element_size,
struct dynarray_finalize_result *result)
{
if (__dynarray_error (list))
/* The caller will reported the deferred error. */
return false;
size_t used = list->used;
/* Empty list. */
if (used == 0)
{
/* An empty list could still be backed by a heap-allocated
array. Free it if necessary. */
if (list->array != scratch)
free (list->array);
*result = (struct dynarray_finalize_result) { NULL, 0 };
return true;
}
size_t allocation_size = used * element_size;
void *heap_array = malloc (allocation_size);
if (heap_array != NULL)
{
/* The new array takes ownership of the strings. */
if (list->array != NULL)
memcpy (heap_array, list->array, allocation_size);
if (list->array != scratch)
free (list->array);
*result = (struct dynarray_finalize_result)
{ .array = heap_array, .length = used };
return true;
}
else
/* The caller will perform the freeing operation. */
return false;
}
libc_hidden_def (__libc_dynarray_finalize)