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 <stdio.h>
38
39 const char haystack[] = "hello world";
40
41 #define check(func, needle, expect) do { \
42 char *ptr = func(haystack, needle); \
43 int result = -1; \
44 if (ptr) \
45 result = ptr - haystack; \
46 if (result != expect) { \
47 printf("%s(%s, 0x%x). Got %d expect %d\n", \
48 #func, haystack, needle, result, expect); \
49 ret++; \
50 } \
51 } while(0)
52
53 #define many_check(func, needle, expect) do { \
54 check(func, needle, expect); \
55 check(func, needle | 0xffffff00, expect); \
56 check(func, needle | 0x00000100, expect); \
57 check(func, needle | 0x80000000, expect); \
58 } while(0)
59
60 int
main(void)61 main(void)
62 {
63 int ret = 0;
64
65 many_check(strchr, 'h', 0);
66 many_check(strrchr, 'h', 0);
67 many_check(strchr, 'l', 2);
68 many_check(strrchr, 'l', 9);
69 many_check(strchr, '\0', 11);
70 many_check(strrchr, '\0', 11);
71 return ret;
72 }
73
