strrchr.c
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/*
* strrchr test.
*
* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
* See https://llvm.org/LICENSE.txt for license information.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include "stringlib.h"
static const struct fun
{
const char *name;
char *(*fun)(const char *s, int c);
} funtab[] = {
#define F(x) {#x, x},
F(strrchr)
#if __aarch64__
F(__strrchr_aarch64)
# if __ARM_FEATURE_SVE
F(__strrchr_aarch64_sve)
# endif
#endif
#undef F
{0, 0}
};
static int test_status;
#define ERR(...) (test_status=1, printf(__VA_ARGS__))
#define A 32
#define SP 512
#define LEN 250000
static char sbuf[LEN+2*A];
static void *alignup(void *p)
{
return (void*)(((uintptr_t)p + A-1) & -A);
}
static void test(const struct fun *fun, int align, int seekpos, int len)
{
char *src = alignup(sbuf);
char *s = src + align;
char *f = seekpos != -1 ? s + seekpos : 0;
int seekchar = 0x1;
void *p;
if (len > LEN || seekpos >= len - 1 || align >= A)
abort();
if (seekchar >= 'a' && seekchar <= 'a' + 23)
abort();
for (int i = 0; i < len + A; i++)
src[i] = '?';
for (int i = 0; i < len - 2; i++)
s[i] = 'a' + i%23;
if (seekpos != -1)
s[seekpos/2] = s[seekpos] = seekchar;
s[len - 1] = '\0';
p = fun->fun(s, seekchar);
if (p != f) {
ERR("%s(%p,0x%02x,%d) returned %p\n", fun->name, s, seekchar, len, p);
ERR("expected: %p\n", f);
abort();
}
}
int main()
{
int r = 0;
for (int i=0; funtab[i].name; i++) {
test_status = 0;
for (int a = 0; a < A; a++) {
int n;
for (n = 1; n < 100; n++) {
for (int sp = 0; sp < n - 1; sp++)
test(funtab+i, a, sp, n);
test(funtab+i, a, -1, n);
}
for (; n < LEN; n *= 2) {
test(funtab+i, a, -1, n);
test(funtab+i, a, n / 2, n);
}
}
printf("%s %s\n", test_status ? "FAIL" : "PASS", funtab[i].name);
if (test_status)
r = -1;
}
return r;
}