42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* Variable-sized buffer with on-stack default allocation.
|
|
Copyright (C) 2020-2022 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/>. */
|
|
|
|
#ifndef _LIBC
|
|
# include <libc-config.h>
|
|
#endif
|
|
|
|
#include <scratch_buffer.h>
|
|
#include <string.h>
|
|
|
|
void *
|
|
__libc_scratch_buffer_dupfree (struct scratch_buffer *buffer, size_t size)
|
|
{
|
|
void *data = buffer->data;
|
|
if (data == buffer->__space.__c)
|
|
{
|
|
void *copy = malloc (size);
|
|
return copy != NULL ? memcpy (copy, data, size) : NULL;
|
|
}
|
|
else
|
|
{
|
|
void *copy = realloc (data, size);
|
|
return copy != NULL ? copy : data;
|
|
}
|
|
}
|
|
libc_hidden_def (__libc_scratch_buffer_dupfree)
|