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bae7c7c7 FW |
1 | /* Test integer wraparound in hcreate. |
2 | Copyright (C) 2016 Free Software Foundation, Inc. | |
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 | |
17 | <http://www.gnu.org/licenses/>. */ | |
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> | |
25 | ||
26 | static void | |
27 | test_size (size_t size) | |
28 | { | |
29 | int res = hcreate (size); | |
30 | if (res == 0) | |
31 | { | |
32 | if (errno == ENOMEM) | |
33 | return; | |
34 | printf ("error: hcreate (%zu): %m\n", size); | |
35 | exit (1); | |
36 | } | |
37 | char *keys[100]; | |
38 | for (int i = 0; i < 100; ++i) | |
39 | { | |
40 | if (asprintf (keys + i, "%d", i) < 0) | |
41 | { | |
42 | printf ("error: asprintf: %m\n"); | |
43 | exit (1); | |
44 | } | |
45 | ENTRY e = { keys[i], (char *) "value" }; | |
46 | if (hsearch (e, ENTER) == NULL) | |
47 | { | |
48 | printf ("error: hsearch (\"%s\"): %m\n", keys[i]); | |
49 | exit (1); | |
50 | } | |
51 | } | |
52 | hdestroy (); | |
53 | ||
54 | for (int i = 0; i < 100; ++i) | |
55 | free (keys[i]); | |
56 | } | |
57 | ||
58 | static int | |
59 | do_test (void) | |
60 | { | |
61 | test_size (500); | |
62 | test_size (-1); | |
63 | test_size (-3); | |
64 | test_size (INT_MAX - 2); | |
65 | test_size (INT_MAX - 1); | |
66 | test_size (INT_MAX); | |
67 | test_size (((unsigned) INT_MAX) + 1); | |
68 | test_size (UINT_MAX - 2); | |
69 | test_size (UINT_MAX - 1); | |
70 | test_size (UINT_MAX); | |
71 | return 0; | |
72 | } | |
73 | ||
74 | #define TEST_FUNCTION do_test () | |
75 | #include "../test-skeleton.c" |