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6a29c58e YQ |
1 | /* malloc() function that is glibc compatible. |
2 | ||
7a6dbc2f | 3 | Copyright (C) 1997-1998, 2006-2007, 2009-2018 Free Software Foundation, Inc. |
6a29c58e YQ |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3, or (at your option) | |
8 | any later version. | |
9 | ||
10 | This program 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 | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
7a6dbc2f | 16 | along with this program; if not, see <https://www.gnu.org/licenses/>. */ |
6a29c58e YQ |
17 | |
18 | /* written by Jim Meyering and Bruno Haible */ | |
19 | ||
20 | #define _GL_USE_STDLIB_ALLOC 1 | |
21 | #include <config.h> | |
22 | /* Only the AC_FUNC_MALLOC macro defines 'malloc' already in config.h. */ | |
23 | #ifdef malloc | |
24 | # define NEED_MALLOC_GNU 1 | |
25 | # undef malloc | |
26 | /* Whereas the gnulib module 'malloc-gnu' defines HAVE_MALLOC_GNU. */ | |
27 | #elif GNULIB_MALLOC_GNU && !HAVE_MALLOC_GNU | |
28 | # define NEED_MALLOC_GNU 1 | |
29 | #endif | |
30 | ||
31 | #include <stdlib.h> | |
32 | ||
33 | #include <errno.h> | |
34 | ||
35 | /* Allocate an N-byte block of memory from the heap. | |
36 | If N is zero, allocate a 1-byte block. */ | |
37 | ||
38 | void * | |
39 | rpl_malloc (size_t n) | |
40 | { | |
41 | void *result; | |
42 | ||
43 | #if NEED_MALLOC_GNU | |
44 | if (n == 0) | |
45 | n = 1; | |
46 | #endif | |
47 | ||
48 | result = malloc (n); | |
49 | ||
50 | #if !HAVE_MALLOC_POSIX | |
51 | if (result == NULL) | |
52 | errno = ENOMEM; | |
53 | #endif | |
54 | ||
55 | return result; | |
56 | } |