1/* Variable-sized buffer with on-stack default allocation.
2 Copyright (C) 2020-2022 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#ifndef _LIBC
20# include <libc-config.h>
21#endif
22
23#include <scratch_buffer.h>
24#include <string.h>
25
26void *
27__libc_scratch_buffer_dupfree (struct scratch_buffer *buffer, size_t size)
28{
29 void *data = buffer->data;
30 if (data == buffer->__space.__c)
31 {
32 void *copy = malloc (size);
33 return copy != NULL ? memcpy (copy, data, size) : NULL;
34 }
35 else
36 {
37 void *copy = realloc (data, size);
38 return copy != NULL ? copy : data;
39 }
40}
41libc_hidden_def (__libc_scratch_buffer_dupfree)
42