1/*
2 * strrchr test.
3 *
4 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 * See https://llvm.org/LICENSE.txt for license information.
6 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 */
8
9#include <stdint.h>
10#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include <limits.h>
14#include "stringlib.h"
15
16static const struct fun
17{
18 const char *name;
19 char *(*fun)(const char *s, int c);
20} funtab[] = {
21#define F(x) {#x, x},
22F(strrchr)
23#if __aarch64__
24F(__strrchr_aarch64)
25# if __ARM_FEATURE_SVE
26F(__strrchr_aarch64_sve)
27# endif
28#endif
29#undef F
30 {0, 0}
31};
32
33static int test_status;
34#define ERR(...) (test_status=1, printf(__VA_ARGS__))
35
36#define A 32
37#define SP 512
38#define LEN 250000
39static char sbuf[LEN+2*A];
40
41static void *alignup(void *p)
42{
43 return (void*)(((uintptr_t)p + A-1) & -A);
44}
45
46static void test(const struct fun *fun, int align, int seekpos, int len)
47{
48 char *src = alignup(p: sbuf);
49 char *s = src + align;
50 char *f = seekpos != -1 ? s + seekpos : 0;
51 int seekchar = 0x1;
52 void *p;
53
54 if (len > LEN || seekpos >= len - 1 || align >= A)
55 abort();
56 if (seekchar >= 'a' && seekchar <= 'a' + 23)
57 abort();
58
59 for (int i = 0; i < len + A; i++)
60 src[i] = '?';
61 for (int i = 0; i < len - 2; i++)
62 s[i] = 'a' + i%23;
63 if (seekpos != -1)
64 s[seekpos/2] = s[seekpos] = seekchar;
65 s[len - 1] = '\0';
66
67 p = fun->fun(s, seekchar);
68
69 if (p != f) {
70 ERR("%s(%p,0x%02x,%d) returned %p\n", fun->name, s, seekchar, len, p);
71 ERR("expected: %p\n", f);
72 abort();
73 }
74}
75
76int main()
77{
78 int r = 0;
79 for (int i=0; funtab[i].name; i++) {
80 test_status = 0;
81 for (int a = 0; a < A; a++) {
82 int n;
83 for (n = 1; n < 100; n++) {
84 for (int sp = 0; sp < n - 1; sp++)
85 test(fun: funtab+i, align: a, seekpos: sp, len: n);
86 test(fun: funtab+i, align: a, seekpos: -1, len: n);
87 }
88 for (; n < LEN; n *= 2) {
89 test(fun: funtab+i, align: a, seekpos: -1, len: n);
90 test(fun: funtab+i, align: a, seekpos: n / 2, len: n);
91 }
92 }
93 printf(format: "%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
94 if (test_status)
95 r = -1;
96 }
97 return r;
98}
99

source code of libc/AOR_v20.02/string/test/strrchr.c