]>
Commit | Line | Data |
---|---|---|
bae7c7c7 | 1 | /* Test integer wraparound in hcreate. |
d614a753 | 2 | Copyright (C) 2016-2020 Free Software Foundation, Inc. |
bae7c7c7 FW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library 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 GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
bae7c7c7 FW |
18 | |
19 | #include <errno.h> | |
20 | #include <limits.h> | |
21 | #include <search.h> | |
22 | #include <stdbool.h> | |
23 | #include <stdio.h> | |
24 | #include <stdlib.h> | |
f34f146e | 25 | #include <sys/resource.h> |
bae7c7c7 FW |
26 | |
27 | static void | |
28 | test_size (size_t size) | |
29 | { | |
30 | int res = hcreate (size); | |
31 | if (res == 0) | |
32 | { | |
33 | if (errno == ENOMEM) | |
34 | return; | |
35 | printf ("error: hcreate (%zu): %m\n", size); | |
36 | exit (1); | |
37 | } | |
38 | char *keys[100]; | |
39 | for (int i = 0; i < 100; ++i) | |
40 | { | |
41 | if (asprintf (keys + i, "%d", i) < 0) | |
42 | { | |
43 | printf ("error: asprintf: %m\n"); | |
44 | exit (1); | |
45 | } | |
46 | ENTRY e = { keys[i], (char *) "value" }; | |
47 | if (hsearch (e, ENTER) == NULL) | |
48 | { | |
49 | printf ("error: hsearch (\"%s\"): %m\n", keys[i]); | |
50 | exit (1); | |
51 | } | |
52 | } | |
53 | hdestroy (); | |
54 | ||
55 | for (int i = 0; i < 100; ++i) | |
56 | free (keys[i]); | |
57 | } | |
58 | ||
59 | static int | |
60 | do_test (void) | |
61 | { | |
f34f146e FW |
62 | /* Limit the size of the process, so that memory allocation will |
63 | fail without impacting the entire system. */ | |
64 | { | |
65 | struct rlimit limit; | |
66 | if (getrlimit (RLIMIT_AS, &limit) != 0) | |
67 | { | |
68 | printf ("getrlimit (RLIMIT_AS) failed: %m\n"); | |
69 | return 1; | |
70 | } | |
71 | long target = 100 * 1024 * 1024; | |
72 | if (limit.rlim_cur == RLIM_INFINITY || limit.rlim_cur > target) | |
73 | { | |
74 | limit.rlim_cur = target; | |
75 | if (setrlimit (RLIMIT_AS, &limit) != 0) | |
76 | { | |
77 | printf ("setrlimit (RLIMIT_AS) failed: %m\n"); | |
78 | return 1; | |
79 | } | |
80 | } | |
81 | } | |
82 | ||
bae7c7c7 FW |
83 | test_size (500); |
84 | test_size (-1); | |
85 | test_size (-3); | |
86 | test_size (INT_MAX - 2); | |
87 | test_size (INT_MAX - 1); | |
88 | test_size (INT_MAX); | |
89 | test_size (((unsigned) INT_MAX) + 1); | |
90 | test_size (UINT_MAX - 2); | |
91 | test_size (UINT_MAX - 1); | |
92 | test_size (UINT_MAX); | |
93 | return 0; | |
94 | } | |
95 | ||
96 | #define TEST_FUNCTION do_test () | |
97 | #include "../test-skeleton.c" |