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- wcsstr() is now linearly complex
- strstr16() is now linearly complex
- strstr() is now vectorized on aarch64 (10x)
- strstr() now uses KMP on pathological cases
- memmem() is now vectorized on aarch64 (10x)
- memmem() now uses KMP on pathological cases
- Disable shared_ptr::owner_before until fixed
- Make iswlower(), iswupper() consistent with glibc
- Remove figure space from iswspace() implementation
- Include line and paragraph separator in iswcntrl()
- Use Musl wcwidth(), iswalpha(), iswpunct(), towlower(), towupper()
This commit is contained in:
Justine Tunney 2024-09-01 01:14:40 -07:00
parent e1528a71e2
commit 7c83f4abc8
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GPG key ID: BE714B4575D6E328
67 changed files with 5602 additions and 5165 deletions
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41
test/libc/str/strstr_test.c
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@ -17,11 +17,23 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/str/str.h"
#include "libc/assert.h"
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/safemacros.h"
#include "libc/mem/alg.h"
#include "libc/mem/gc.h"
#include "libc/mem/mem.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/sysconf.h"
#include "libc/stdalign.h"
#include "libc/stdio/rand.h"
#include "libc/stdio/stdio.h"
#include "libc/stdio/sysparam.h"
#include "libc/sysv/consts/map.h"
#include "libc/sysv/consts/prot.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/hyperion.h"
#include "libc/testlib/testlib.h"
@ -48,6 +60,13 @@ char *strstr_naive(const char *haystack, const char *needle) {
return 0;
}
TEST(strstr, special) {
MAKESTRING(haystack, "abc123def");
ASSERT_STREQ(&haystack[0], strstr(haystack, haystack));
ASSERT_STREQ(&haystack[0], strstr(haystack, ""));
free(haystack);
}
TEST(strstr, test_emptyString_isFoundAtBeginning) {
MAKESTRING(haystack, "abc123def");
ASSERT_STREQ(&haystack[0], strstr(haystack, gc(strdup(""))));
@ -67,7 +86,8 @@ TEST(strstr, test_notFound1) {
}
TEST(strstr, test_middleOfString) {
MAKESTRING(haystack, "abc123def");
alignas(16) char hog[] = "abc123def";
MAKESTRING(haystack, hog);
ASSERT_STREQ(&haystack[3], strstr(haystack, gc(strdup("123"))));
free(haystack);
}
@ -98,6 +118,25 @@ TEST(strstr, test) {
ASSERT_STREQ("x", strstr("x", "x"));
}
TEST(strstr, safety) {
int pagesz = sysconf(_SC_PAGESIZE);
char *map = (char *)mmap(0, pagesz * 2, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
npassert(map != MAP_FAILED);
npassert(!mprotect(map + pagesz, pagesz, PROT_NONE));
for (int haylen = 1; haylen < 128; ++haylen) {
char *hay = map + pagesz - (haylen + 1);
for (int i = 0; i < haylen; ++i)
hay[i] = max(rand() & 255, 1);
hay[haylen] = 0;
for (int neelen = 1; neelen < haylen; ++neelen) {
char *nee = hay + (haylen + 1) - (neelen + 1);
ASSERT_EQ(strstr_naive(hay, nee), strstr(hay, nee));
}
}
munmap(map, pagesz * 2);
}
TEST(strstr, breakit) {
char *p;
p = gc(calloc(1, 32));