Line | Count | Source (jump to first uncovered line) |
1 | | /* ialloc.h -- malloc with idx_t rather than size_t |
2 | | |
3 | | Copyright 2021-2023 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 | | #include "idx.h" |
22 | | |
23 | | #include <errno.h> |
24 | | #include <stdint.h> |
25 | | #include <stdlib.h> |
26 | | |
27 | | #ifndef _GL_INLINE_HEADER_BEGIN |
28 | | #error "Please include config.h first." |
29 | | #endif |
30 | | _GL_INLINE_HEADER_BEGIN |
31 | | #ifndef IALLOC_INLINE |
32 | | # define IALLOC_INLINE _GL_INLINE |
33 | | #endif |
34 | | |
35 | | #ifdef __cplusplus |
36 | | extern "C" { |
37 | | #endif |
38 | | |
39 | | IALLOC_INLINE void * _GL_ATTRIBUTE_COLD |
40 | | _gl_alloc_nomem (void) |
41 | 0 | { |
42 | 0 | errno = ENOMEM; |
43 | 0 | return NULL; |
44 | 0 | } |
45 | | |
46 | | IALLOC_INLINE |
47 | | _GL_ATTRIBUTE_MALLOC /*_GL_ATTRIBUTE_DEALLOC_FREE*/ |
48 | | void * |
49 | | imalloc (idx_t s) |
50 | 0 | { |
51 | 0 | return s <= SIZE_MAX ? malloc (s) : _gl_alloc_nomem (); |
52 | 0 | } |
53 | | |
54 | | IALLOC_INLINE |
55 | | /*_GL_ATTRIBUTE_DEALLOC_FREE*/ |
56 | | void * |
57 | | irealloc (void *p, idx_t s) |
58 | 0 | { |
59 | | /* Work around GNU realloc glitch by treating a zero size as if it |
60 | | were 1, so that returning NULL is equivalent to failing. */ |
61 | 0 | return s <= SIZE_MAX ? realloc (p, s | !s) : _gl_alloc_nomem (); |
62 | 0 | } |
63 | | |
64 | | IALLOC_INLINE |
65 | | _GL_ATTRIBUTE_MALLOC /*_GL_ATTRIBUTE_DEALLOC_FREE*/ |
66 | | void * |
67 | | icalloc (idx_t n, idx_t s) |
68 | 0 | { |
69 | 0 | if (SIZE_MAX < n) |
70 | 0 | { |
71 | 0 | if (s != 0) |
72 | 0 | return _gl_alloc_nomem (); |
73 | 0 | n = 0; |
74 | 0 | } |
75 | 0 | if (SIZE_MAX < s) |
76 | 0 | { |
77 | 0 | if (n != 0) |
78 | 0 | return _gl_alloc_nomem (); |
79 | 0 | s = 0; |
80 | 0 | } |
81 | 0 | return calloc (n, s); |
82 | 0 | } |
83 | | |
84 | | IALLOC_INLINE void * |
85 | | ireallocarray (void *p, idx_t n, idx_t s) |
86 | 0 | { |
87 | | /* Work around GNU reallocarray glitch by treating a zero size as if |
88 | | it were 1, so that returning NULL is equivalent to failing. */ |
89 | 0 | if (n == 0 || s == 0) |
90 | 0 | n = s = 1; |
91 | 0 | return (n <= SIZE_MAX && s <= SIZE_MAX |
92 | 0 | ? reallocarray (p, n, s) |
93 | 0 | : _gl_alloc_nomem ()); |
94 | 0 | } |
95 | | |
96 | | #ifdef __cplusplus |
97 | | } |
98 | | #endif |
99 | | |
100 | | #endif |