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688903eb | 1 | /* Copyright (C) 2000-2018 Free Software Foundation, Inc. |
aa780bab UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
aa780bab UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
aa780bab | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
aa780bab UD |
18 | |
19 | #include <errno.h> | |
20 | #include <error.h> | |
a2e62fb1 | 21 | #include <limits.h> |
aa780bab UD |
22 | #include <malloc.h> |
23 | #include <stdlib.h> | |
24 | #include <stdio.h> | |
25 | ||
26 | ||
27 | /* Number of samples per size. */ | |
28 | #define N 50000 | |
29 | ||
30 | ||
31 | static void | |
32 | fixed_test (int size) | |
33 | { | |
34 | char *ptrs[N]; | |
35 | int i; | |
36 | ||
37 | for (i = 0; i < N; ++i) | |
38 | { | |
39 | int j; | |
40 | ||
41 | ptrs[i] = (char *) calloc (1, size); | |
42 | ||
43 | if (ptrs[i] == NULL) | |
44 | break; | |
45 | ||
46 | for (j = 0; j < size; ++j) | |
47 | { | |
48 | if (ptrs[i][j] != '\0') | |
49 | error (EXIT_FAILURE, 0, | |
50 | "byte not cleared (size %d, element %d, byte %d)", | |
51 | size, i, j); | |
52 | ptrs[i][j] = '\xff'; | |
53 | } | |
54 | } | |
55 | ||
56 | while (i-- > 0) | |
57 | free (ptrs[i]); | |
58 | } | |
59 | ||
60 | ||
61 | static void | |
62 | random_test (void) | |
63 | { | |
64 | char *ptrs[N]; | |
65 | int i; | |
66 | ||
67 | for (i = 0; i < N; ++i) | |
68 | { | |
69 | int j; | |
70 | int n = 1 + random () % 10; | |
71 | int elem = 1 + random () % 100; | |
72 | int size = n * elem; | |
73 | ||
74 | ptrs[i] = (char *) calloc (n, elem); | |
75 | ||
76 | if (ptrs[i] == NULL) | |
77 | break; | |
78 | ||
79 | for (j = 0; j < size; ++j) | |
80 | { | |
81 | if (ptrs[i][j] != '\0') | |
82 | error (EXIT_FAILURE, 0, | |
83 | "byte not cleared (size %d, element %d, byte %d)", | |
84 | size, i, j); | |
85 | ptrs[i][j] = '\xff'; | |
86 | } | |
87 | } | |
88 | ||
89 | while (i-- > 0) | |
90 | free (ptrs[i]); | |
91 | } | |
92 | ||
93 | ||
a2e62fb1 UD |
94 | static void |
95 | null_test (void) | |
96 | { | |
97 | /* If the size is 0 the result is implementation defined. Just make | |
98 | sure the program doesn't crash. */ | |
99 | calloc (0, 0); | |
100 | calloc (0, UINT_MAX); | |
101 | calloc (UINT_MAX, 0); | |
102 | calloc (0, ~((size_t) 0)); | |
103 | calloc (~((size_t) 0), 0); | |
104 | } | |
105 | ||
106 | ||
29955b5d AS |
107 | static int |
108 | do_test (void) | |
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109 | { |
110 | /* We are allocating blocks with `calloc' and check whether every | |
111 | block is completely cleared. We first try this for some fixed | |
112 | times and then with random size. */ | |
113 | fixed_test (15); | |
114 | fixed_test (5); | |
115 | fixed_test (17); | |
116 | fixed_test (6); | |
117 | fixed_test (31); | |
118 | fixed_test (96); | |
119 | ||
120 | random_test (); | |
121 | ||
a2e62fb1 UD |
122 | null_test (); |
123 | ||
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124 | return 0; |
125 | } | |
29955b5d AS |
126 | |
127 | #define TEST_FUNCTION do_test () | |
128 | #include "../test-skeleton.c" |