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glibc/string/test-strncasecmp.c
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/* Test and measure strncasecmp functions. | |
Copyright (C) 1999-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Written by Jakub Jelinek <jakub@redhat.com>, 1999. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <locale.h> | |
#include <ctype.h> | |
#define TEST_MAIN | |
#define TEST_NAME "strncasecmp" | |
#include "test-string.h" | |
typedef int (*proto_t) (const char *, const char *, size_t); | |
static int simple_strncasecmp (const char *, const char *, size_t); | |
static int stupid_strncasecmp (const char *, const char *, size_t); | |
IMPL (stupid_strncasecmp, 0) | |
IMPL (simple_strncasecmp, 0) | |
IMPL (strncasecmp, 1) | |
static int | |
simple_strncasecmp (const char *s1, const char *s2, size_t n) | |
{ | |
int ret; | |
if (n == 0) | |
return 0; | |
while ((ret = ((unsigned char) tolower (*s1) | |
- (unsigned char) tolower (*s2))) == 0 | |
&& *s1++) | |
{ | |
if (--n == 0) | |
return 0; | |
++s2; | |
} | |
return ret; | |
} | |
static int | |
stupid_strncasecmp (const char *s1, const char *s2, size_t max) | |
{ | |
size_t ns1 = strlen (s1) + 1; | |
size_t ns2 = strlen (s2) + 1; | |
size_t n = ns1 < ns2 ? ns1 : ns2; | |
if (n > max) | |
n = max; | |
int ret = 0; | |
while (n--) | |
{ | |
if ((ret = ((unsigned char) tolower (*s1) | |
- (unsigned char) tolower (*s2))) != 0) | |
break; | |
++s1; | |
++s2; | |
} | |
return ret; | |
} | |
static int | |
check_result (impl_t *impl, const char *s1, const char *s2, size_t n, | |
int exp_result) | |
{ | |
int result = CALL (impl, s1, s2, n); | |
if ((exp_result == 0 && result != 0) | |
|| (exp_result < 0 && result >= 0) | |
|| (exp_result > 0 && result <= 0)) | |
{ | |
error (0, 0, "Wrong result in function %s %d %d", impl->name, | |
result, exp_result); | |
ret = 1; | |
return -1; | |
} | |
return 0; | |
} | |
static void | |
do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n, | |
int exp_result) | |
{ | |
if (check_result (impl, s1, s2, n, exp_result) < 0) | |
return; | |
} | |
static void | |
do_test (size_t align1, size_t align2, size_t n, size_t len, int max_char, | |
int exp_result) | |
{ | |
size_t i; | |
char *s1, *s2; | |
if (len == 0) | |
return; | |
align1 &= 7; | |
if (align1 + len + 1 >= page_size) | |
return; | |
align2 &= 7; | |
if (align2 + len + 1 >= page_size) | |
return; | |
s1 = (char *) (buf1 + align1); | |
s2 = (char *) (buf2 + align2); | |
for (i = 0; i < len; i++) | |
{ | |
s1[i] = toupper (1 + 23 * i % max_char); | |
s2[i] = tolower (s1[i]); | |
} | |
s1[len] = s2[len] = 0; | |
s1[len + 1] = 23; | |
s2[len + 1] = 24 + exp_result; | |
if ((s2[len - 1] == 'z' && exp_result == -1) | |
|| (s2[len - 1] == 'a' && exp_result == 1)) | |
s1[len - 1] += exp_result; | |
else | |
s2[len - 1] -= exp_result; | |
FOR_EACH_IMPL (impl, 0) | |
do_one_test (impl, s1, s2, n, exp_result); | |
} | |
static void | |
do_random_tests (void) | |
{ | |
size_t i, j, n, align1, align2, pos, len1, len2; | |
int result; | |
long r; | |
unsigned char *p1 = buf1 + page_size - 512; | |
unsigned char *p2 = buf2 + page_size - 512; | |
for (n = 0; n < ITERATIONS; n++) | |
{ | |
align1 = random () & 31; | |
if (random () & 1) | |
align2 = random () & 31; | |
else | |
align2 = align1 + (random () & 24); | |
pos = random () & 511; | |
j = align1 > align2 ? align1 : align2; | |
if (pos + j >= 511) | |
pos = 510 - j - (random () & 7); | |
len1 = random () & 511; | |
if (pos >= len1 && (random () & 1)) | |
len1 = pos + (random () & 7); | |
if (len1 + j >= 512) | |
len1 = 511 - j - (random () & 7); | |
if (pos >= len1) | |
len2 = len1; | |
else | |
len2 = len1 + (len1 != 511 - j ? random () % (511 - j - len1) : 0); | |
j = (pos > len2 ? pos : len2) + align1 + 64; | |
if (j > 512) | |
j = 512; | |
for (i = 0; i < j; ++i) | |
{ | |
p1[i] = tolower (random () & 255); | |
if (i < len1 + align1 && !p1[i]) | |
{ | |
p1[i] = tolower (random () & 255); | |
if (!p1[i]) | |
p1[i] = tolower (1 + (random () & 127)); | |
} | |
} | |
for (i = 0; i < j; ++i) | |
{ | |
p2[i] = toupper (random () & 255); | |
if (i < len2 + align2 && !p2[i]) | |
{ | |
p2[i] = toupper (random () & 255); | |
if (!p2[i]) | |
toupper (p2[i] = 1 + (random () & 127)); | |
} | |
} | |
result = 0; | |
memcpy (p2 + align2, p1 + align1, pos); | |
if (pos < len1) | |
{ | |
if (tolower (p2[align2 + pos]) == p1[align1 + pos]) | |
{ | |
p2[align2 + pos] = toupper (random () & 255); | |
if (tolower (p2[align2 + pos]) == p1[align1 + pos]) | |
p2[align2 + pos] = toupper (p1[align1 + pos] | |
+ 3 + (random () & 127)); | |
} | |
if (p1[align1 + pos] < tolower (p2[align2 + pos])) | |
result = -1; | |
else | |
result = 1; | |
} | |
p1[len1 + align1] = 0; | |
p2[len2 + align2] = 0; | |
FOR_EACH_IMPL (impl, 1) | |
{ | |
r = CALL (impl, (char *) (p1 + align1), (char *) (p2 + align2), | |
pos + 1 + (random () & 255)); | |
/* Test whether on 64-bit architectures where ABI requires | |
callee to promote has the promotion been done. */ | |
asm ("" : "=g" (r) : "0" (r)); | |
if ((r == 0 && result) | |
|| (r < 0 && result >= 0) | |
|| (r > 0 && result <= 0)) | |
{ | |
error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd, %zd) %ld != %d, p1 %p p2 %p", | |
n, impl->name, align1, align2, len1, len2, pos, r, result, p1, p2); | |
ret = 1; | |
} | |
} | |
} | |
} | |
/* Regression test for BZ #12205 */ | |
static void | |
bz12205 (void) | |
{ | |
static char cp [4096+16] __attribute__ ((aligned(4096))); | |
static char gotrel[4096] __attribute__ ((aligned(4096))); | |
char *s1 = cp + 0xffa; | |
char *s2 = gotrel + 0xcbe; | |
int exp_result; | |
size_t n = 6; | |
strcpy (s1, "gottpoff"); | |
strcpy (s2, "GOTPLT"); | |
exp_result = simple_strncasecmp (s1, s2, n); | |
FOR_EACH_IMPL (impl, 0) | |
check_result (impl, s1, s2, n, exp_result); | |
} | |
/* Regression test for BZ #14195 */ | |
static void | |
bz14195 (void) | |
{ | |
const char *empty_string = ""; | |
FOR_EACH_IMPL (impl, 0) | |
check_result (impl, empty_string, "", 5, 0); | |
} | |
static void | |
test_locale (const char *locale) | |
{ | |
size_t i; | |
if (setlocale (LC_CTYPE, locale) == NULL) | |
{ | |
error (0, 0, "cannot set locale \"%s\"", locale); | |
ret = 1; | |
} | |
bz12205 (); | |
bz14195 (); | |
printf ("%23s", locale); | |
FOR_EACH_IMPL (impl, 0) | |
printf ("\t%s", impl->name); | |
putchar ('\n'); | |
for (i = 1; i < 16; ++i) | |
{ | |
do_test (i, i, i - 1, i, 127, 0); | |
do_test (i, i, i, i, 127, 0); | |
do_test (i, i, i, i, 127, 1); | |
do_test (i, i, i, i, 127, -1); | |
do_test (i, i, i + 1, i, 127, 0); | |
do_test (i, i, i + 1, i, 127, 1); | |
do_test (i, i, i + 1, i, 127, -1); | |
} | |
for (i = 1; i < 10; ++i) | |
{ | |
do_test (0, 0, (2 << i) - 1, 2 << i, 127, 0); | |
do_test (0, 0, 2 << i, 2 << i, 254, 0); | |
do_test (0, 0, (2 << i) + 1, 2 << i, 127, 0); | |
do_test (0, 0, (2 << i) + 1, 2 << i, 254, 0); | |
do_test (0, 0, 2 << i, 2 << i, 127, 1); | |
do_test (0, 0, (2 << i) + 10, 2 << i, 127, 1); | |
do_test (0, 0, 2 << i, 2 << i, 254, 1); | |
do_test (0, 0, (2 << i) + 10, 2 << i, 254, 1); | |
do_test (0, 0, 2 << i, 2 << i, 127, -1); | |
do_test (0, 0, (2 << i) + 10, 2 << i, 127, -1); | |
do_test (0, 0, 2 << i, 2 << i, 254, -1); | |
do_test (0, 0, (2 << i) + 10, 2 << i, 254, -1); | |
} | |
for (i = 1; i < 8; ++i) | |
{ | |
do_test (i, 2 * i, (8 << i) - 1, 8 << i, 127, 0); | |
do_test (i, 2 * i, 8 << i, 8 << i, 127, 0); | |
do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 0); | |
do_test (2 * i, i, (8 << i) - 1, 8 << i, 254, 0); | |
do_test (2 * i, i, 8 << i, 8 << i, 254, 0); | |
do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 0); | |
do_test (i, 2 * i, 8 << i, 8 << i, 127, 1); | |
do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 1); | |
do_test (2 * i, i, 8 << i, 8 << i, 254, 1); | |
do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 1); | |
do_test (i, 2 * i, 8 << i, 8 << i, 127, -1); | |
do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, -1); | |
do_test (2 * i, i, 8 << i, 8 << i, 254, -1); | |
do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, -1); | |
} | |
do_random_tests (); | |
} | |
int | |
test_main (void) | |
{ | |
test_init (); | |
test_locale ("C"); | |
test_locale ("en_US.ISO-8859-1"); | |
test_locale ("en_US.UTF-8"); | |
test_locale ("tr_TR.ISO-8859-9"); | |
test_locale ("tr_TR.UTF-8"); | |
return ret; | |
} | |
#include "../test-skeleton.c" |