1 /*
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright © 2021 Keith Packard
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * 3. Neither the name of the copyright holder nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
33 * OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 #include <string.h>
37 #include <stdint.h>
38 #include <stdio.h>
39
40 const char haystack[] = "hello world";
41
42 #define check(func, needle, expect) do { \
43 char *ptr = func(haystack, needle); \
44 int result = -1; \
45 if (ptr) \
46 result = ptr - haystack; \
47 if (result != expect) { \
48 printf("%s(%s, 0x%x). Got %d expect %d\n", \
49 #func, haystack, needle, result, expect); \
50 ret++; \
51 } \
52 } while(0)
53
54 #if INT_MAX == INT16_MAX
55 #define many_check(func, needle, expect) do { \
56 check(func, needle, expect); \
57 check(func, needle | 0xff00, expect); \
58 check(func, needle | 0x0100, expect); \
59 check(func, needle | 0x8000, expect); \
60 } while(0)
61 #else
62 #define many_check(func, needle, expect) do { \
63 check(func, needle, expect); \
64 check(func, needle | 0xffffff00, expect); \
65 check(func, needle | 0x00000100, expect); \
66 check(func, needle | 0x80000000, expect); \
67 } while(0)
68 #endif
69
70 int
main(void)71 main(void)
72 {
73 int ret = 0;
74
75 many_check(strchr, 'h', 0);
76 many_check(strrchr, 'h', 0);
77 many_check(strchr, 'l', 2);
78 many_check(strrchr, 'l', 9);
79 many_check(strchr, '\0', 11);
80 many_check(strrchr, '\0', 11);
81 return ret;
82 }
83
