mirror of
https://github.com/jart/cosmopolitan.git
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2bd1e72d5a
We can put this back the moment someone requests it. Pain-free garbage collection for the C language is pretty cool. All it does is overwrite the return address with a trampoline that calls free(). It's not clear what it should be named if it's made a public API.
77 lines
3.5 KiB
C
77 lines
3.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/alg/alg.h"
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#include "libc/bits/bits.h"
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#include "libc/dce.h"
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#include "libc/mem/mem.h"
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#include "libc/nexgen32e/x86feature.h"
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#include "libc/runtime/gc.internal.h"
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#include "libc/str/internal.h"
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#include "libc/testlib/testlib.h"
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#define MAKESTRING(NAME, VALUE) \
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char *NAME = strcpy(malloc(sizeof(VALUE) + 16), VALUE)
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char *strstr_kmp(const char *haystak, const char *needle) {
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return memmem(haystak, strlen(haystak), needle, strlen(needle));
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}
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TEST(strstr, test_emptyString_isFoundAtBeginning) {
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MAKESTRING(haystack, "abc123def");
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ASSERT_STREQ(&haystack[0], strstr(haystack, gc(strdup(""))));
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free(haystack);
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}
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TEST(strstr, test_notFound) {
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MAKESTRING(haystack, "abc123def");
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ASSERT_EQ(NULL, strstr(haystack, gc(strdup("xyz"))));
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free(haystack);
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}
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TEST(strstr, test_middleOfString) {
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MAKESTRING(haystack, "abc123def");
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ASSERT_STREQ(&haystack[3], strstr(haystack, gc(strdup("123"))));
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free(haystack);
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}
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TEST(strstr, test_endOfString) {
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MAKESTRING(haystack, "abc123def");
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ASSERT_STREQ(&haystack[8], strstr(haystack, gc(strdup("f"))));
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free(haystack);
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}
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TEST(strstr, test_secondXmmWord) {
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MAKESTRING(haystack, "eeeeeeeeeeeeeeeebbbbbbbbbbb123");
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ASSERT_STREQ(&haystack[27], strstr(haystack, gc(strdup("123"))));
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free(haystack);
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}
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TEST(strstr, test_overlapsXmmWords) {
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MAKESTRING(haystack, "eeeeeeeeeeeeeeeebbbbbbbbbbbbbbb");
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ASSERT_STREQ(&haystack[15], strstr(haystack, gc(strdup("eb"))));
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free(haystack);
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}
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TEST(strstr, test) {
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ASSERT_EQ(NULL, strstr("x86_64-linux-musl-gcc", "clang"));
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ASSERT_STREQ("gcc", strstr("x86_64-linux-musl-gcc", "gcc"));
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ASSERT_EQ(NULL, strstr("-Wl,--gc-sections", "stack-protector"));
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ASSERT_EQ(NULL, strstr("-Wl,--gc-sections", "sanitize"));
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ASSERT_STREQ("x", strstr("x", "x"));
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}
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