Line | Count | Source (jump to first uncovered line) |
1 | | /* ialloc.h -- malloc with idx_t rather than size_t |
2 | | |
3 | | Copyright 2021-2025 Free Software Foundation, Inc. |
4 | | |
5 | | This file is free software: you can redistribute it and/or modify |
6 | | it under the terms of the GNU Lesser General Public License as |
7 | | published by the Free Software Foundation; either version 2.1 of the |
8 | | License, or (at your option) any later version. |
9 | | |
10 | | This file 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 Lesser General Public License for more details. |
14 | | |
15 | | You should have received a copy of the GNU Lesser General Public License |
16 | | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
17 | | |
18 | | #ifndef IALLOC_H_ |
19 | | #define IALLOC_H_ |
20 | | |
21 | | /* This file uses _GL_INLINE_HEADER_BEGIN, _GL_INLINE, _GL_ATTRIBUTE_COLD, |
22 | | _GL_ATTRIBUTE_MALLOC. */ |
23 | | #if !_GL_CONFIG_H_INCLUDED |
24 | | #error "Please include config.h first." |
25 | | #endif |
26 | | |
27 | | #include "idx.h" |
28 | | |
29 | | #include <errno.h> |
30 | | #include <stdint.h> |
31 | | #include <stdlib.h> |
32 | | |
33 | | _GL_INLINE_HEADER_BEGIN |
34 | | #ifndef IALLOC_INLINE |
35 | | # define IALLOC_INLINE _GL_INLINE |
36 | | #endif |
37 | | |
38 | | #ifdef __cplusplus |
39 | | extern "C" { |
40 | | #endif |
41 | | |
42 | | IALLOC_INLINE void * _GL_ATTRIBUTE_COLD |
43 | | _gl_alloc_nomem (void) |
44 | 0 | { |
45 | 0 | errno = ENOMEM; |
46 | 0 | return NULL; |
47 | 0 | } |
48 | | |
49 | | /* imalloc (size) is like malloc (size). |
50 | | It returns a non-NULL pointer to size bytes of memory. |
51 | | Upon failure, it returns NULL with errno set. */ |
52 | | IALLOC_INLINE |
53 | | _GL_ATTRIBUTE_MALLOC /*_GL_ATTRIBUTE_DEALLOC_FREE*/ |
54 | | void * |
55 | | imalloc (idx_t s) |
56 | 0 | { |
57 | 0 | return s <= SIZE_MAX ? malloc (s) : _gl_alloc_nomem (); |
58 | 0 | } |
59 | | |
60 | | /* irealloc (ptr, size) is like realloc (ptr, size). |
61 | | It returns a non-NULL pointer to size bytes of memory. |
62 | | Upon failure, it returns NULL with errno set. */ |
63 | | IALLOC_INLINE |
64 | | /*_GL_ATTRIBUTE_DEALLOC_FREE*/ |
65 | | void * |
66 | | irealloc (void *p, idx_t s) |
67 | 0 | { |
68 | 0 | return s <= SIZE_MAX ? realloc (p, s) : _gl_alloc_nomem (); |
69 | 0 | } |
70 | | |
71 | | /* icalloc (num, size) is like calloc (num, size). |
72 | | It returns a non-NULL pointer to num * size bytes of memory. |
73 | | Upon failure, it returns NULL with errno set. */ |
74 | | IALLOC_INLINE |
75 | | _GL_ATTRIBUTE_MALLOC /*_GL_ATTRIBUTE_DEALLOC_FREE*/ |
76 | | void * |
77 | | icalloc (idx_t n, idx_t s) |
78 | 0 | { |
79 | 0 | if (SIZE_MAX < n) |
80 | 0 | { |
81 | 0 | if (s != 0) |
82 | 0 | return _gl_alloc_nomem (); |
83 | 0 | n = 0; |
84 | 0 | } |
85 | 0 | if (SIZE_MAX < s) |
86 | 0 | { |
87 | 0 | if (n != 0) |
88 | 0 | return _gl_alloc_nomem (); |
89 | 0 | s = 0; |
90 | 0 | } |
91 | 0 | return calloc (n, s); |
92 | 0 | } |
93 | | |
94 | | /* ireallocarray (ptr, num, size) is like reallocarray (ptr, num, size). |
95 | | It returns a non-NULL pointer to num * size bytes of memory. |
96 | | Upon failure, it returns NULL with errno set. */ |
97 | | IALLOC_INLINE void * |
98 | | ireallocarray (void *p, idx_t n, idx_t s) |
99 | 0 | { |
100 | 0 | return (n <= SIZE_MAX && s <= SIZE_MAX |
101 | 0 | ? reallocarray (p, n, s) |
102 | 0 | : _gl_alloc_nomem ()); |
103 | 0 | } |
104 | | |
105 | | #ifdef __cplusplus |
106 | | } |
107 | | #endif |
108 | | |
109 | | _GL_INLINE_HEADER_END |
110 | | |
111 | | #endif |