1 | /* Copyright (C) 2005-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | #include <libc-diag.h> |
22 | |
23 | static int errors = 0; |
24 | |
25 | static void |
26 | merror (const char *msg) |
27 | { |
28 | ++errors; |
29 | printf (format: "Error: %s\n" , msg); |
30 | } |
31 | |
32 | static int |
33 | do_test (void) |
34 | { |
35 | void *p, *q; |
36 | |
37 | errno = 0; |
38 | |
39 | DIAG_PUSH_NEEDS_COMMENT; |
40 | #if __GNUC_PREREQ (7, 0) |
41 | /* GCC 7 warns about too-large allocations; here we want to test |
42 | that they fail. */ |
43 | DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=" ); |
44 | #endif |
45 | p = malloc (size: -1); |
46 | DIAG_POP_NEEDS_COMMENT; |
47 | |
48 | if (p != NULL) |
49 | merror (msg: "malloc (-1) succeeded." ); |
50 | else if (errno != ENOMEM) |
51 | merror (msg: "errno is not set correctly." ); |
52 | |
53 | p = malloc (size: 10); |
54 | if (p == NULL) |
55 | merror (msg: "malloc (10) failed." ); |
56 | |
57 | p = realloc (ptr: p, size: 0); |
58 | if (p != NULL) |
59 | merror (msg: "realloc (p, 0) failed." ); |
60 | |
61 | p = malloc (size: 0); |
62 | if (p == NULL) |
63 | merror (msg: "malloc (0) failed." ); |
64 | |
65 | p = realloc (ptr: p, size: 0); |
66 | if (p != NULL) |
67 | merror (msg: "realloc (p, 0) failed." ); |
68 | |
69 | q = malloc (size: 256); |
70 | if (q == NULL) |
71 | merror (msg: "malloc (256) failed." ); |
72 | |
73 | p = malloc (size: 512); |
74 | if (p == NULL) |
75 | merror (msg: "malloc (512) failed." ); |
76 | |
77 | DIAG_PUSH_NEEDS_COMMENT; |
78 | #if __GNUC_PREREQ (7, 0) |
79 | /* GCC 7 warns about too-large allocations; here we want to test |
80 | that they fail. */ |
81 | DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=" ); |
82 | #endif |
83 | if (realloc (ptr: p, size: -256) != NULL) |
84 | merror (msg: "realloc (p, -256) succeeded." ); |
85 | else if (errno != ENOMEM) |
86 | merror (msg: "errno is not set correctly." ); |
87 | DIAG_POP_NEEDS_COMMENT; |
88 | |
89 | #if __GNUC_PREREQ (12, 0) |
90 | /* Ignore a valid warning about using a pointer made indeterminate |
91 | by a prior call to realloc(). */ |
92 | DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free" ); |
93 | #endif |
94 | free (ptr: p); |
95 | #if __GNUC_PREREQ (12, 0) |
96 | DIAG_POP_NEEDS_COMMENT; |
97 | #endif |
98 | |
99 | p = malloc (size: 512); |
100 | if (p == NULL) |
101 | merror (msg: "malloc (512) failed." ); |
102 | |
103 | DIAG_PUSH_NEEDS_COMMENT; |
104 | #if __GNUC_PREREQ (7, 0) |
105 | /* GCC 7 warns about too-large allocations; here we want to test |
106 | that they fail. */ |
107 | DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=" ); |
108 | #endif |
109 | if (realloc (ptr: p, size: -1) != NULL) |
110 | merror (msg: "realloc (p, -1) succeeded." ); |
111 | else if (errno != ENOMEM) |
112 | merror (msg: "errno is not set correctly." ); |
113 | DIAG_POP_NEEDS_COMMENT; |
114 | |
115 | #if __GNUC_PREREQ (12, 0) |
116 | /* Ignore a valid warning about using a pointer made indeterminate |
117 | by a prior call to realloc(). */ |
118 | DIAG_IGNORE_NEEDS_COMMENT (12, "-Wuse-after-free" ); |
119 | #endif |
120 | free (ptr: p); |
121 | #if __GNUC_PREREQ (12, 0) |
122 | DIAG_POP_NEEDS_COMMENT; |
123 | #endif |
124 | free (ptr: q); |
125 | |
126 | return errors != 0; |
127 | } |
128 | |
129 | #define TEST_FUNCTION do_test () |
130 | #include "../test-skeleton.c" |
131 | |