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9c9d63b1 PM |
1 | /* Variable-sized buffer with on-stack default allocation. |
2 | Copyright (C) 2020-2021 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 General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 3 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 | General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU 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 | ||
26 | void * | |
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 | } | |
41 | libc_hidden_def (__libc_scratch_buffer_dupfree) |