1 | /* Copyright (C) 1999-2024 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 <malloc.h> |
20 | #include <stdio.h> |
21 | #include <stdlib.h> |
22 | #include <libc-diag.h> |
23 | #include <time.h> |
24 | |
25 | #include "tst-malloc-aux.h" |
26 | |
27 | static int errors = 0; |
28 | |
29 | static void |
30 | merror (const char *msg) |
31 | { |
32 | ++errors; |
33 | printf (format: "Error: %s\n" , msg); |
34 | } |
35 | |
36 | static int |
37 | do_test (void) |
38 | { |
39 | void *p, *q; |
40 | int save; |
41 | |
42 | srandom (seed: time (NULL)); |
43 | |
44 | errno = 0; |
45 | |
46 | DIAG_PUSH_NEEDS_COMMENT; |
47 | #if __GNUC_PREREQ (7, 0) |
48 | /* GCC 7 warns about too-large allocations; here we want to test |
49 | that they fail. */ |
50 | DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=" ); |
51 | #endif |
52 | p = malloc (-1); |
53 | DIAG_POP_NEEDS_COMMENT; |
54 | save = errno; |
55 | |
56 | if (p != NULL) |
57 | merror (msg: "malloc (-1) succeeded." ); |
58 | |
59 | if (p == NULL && save != ENOMEM) |
60 | merror (msg: "errno is not set correctly" ); |
61 | |
62 | p = malloc (10); |
63 | if (p == NULL) |
64 | merror (msg: "malloc (10) failed." ); |
65 | |
66 | /* realloc (p, 0) == free (p). */ |
67 | p = realloc (p, 0); |
68 | if (p != NULL) |
69 | merror (msg: "realloc (p, 0) failed." ); |
70 | |
71 | p = malloc (0); |
72 | if (p == NULL) |
73 | merror (msg: "malloc (0) failed." ); |
74 | |
75 | p = realloc (p, 0); |
76 | if (p != NULL) |
77 | merror (msg: "realloc (p, 0) failed." ); |
78 | |
79 | p = malloc (513 * 1024); |
80 | if (p == NULL) |
81 | merror (msg: "malloc (513K) failed." ); |
82 | |
83 | DIAG_PUSH_NEEDS_COMMENT; |
84 | #if __GNUC_PREREQ (7, 0) |
85 | /* GCC 7 warns about too-large allocations; here we want to test |
86 | that they fail. */ |
87 | DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=" ); |
88 | #endif |
89 | q = malloc (-512 * 1024); |
90 | DIAG_POP_NEEDS_COMMENT; |
91 | if (q != NULL) |
92 | merror (msg: "malloc (-512K) succeeded." ); |
93 | |
94 | free (ptr: p); |
95 | |
96 | return errors != 0; |
97 | } |
98 | |
99 | #define TEST_FUNCTION do_test () |
100 | #include "../test-skeleton.c" |
101 | |