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Make more fixes and improvements

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- Remove PAGESIZE constant
- Fix realloc() documentation
- Fix ttyname_r() error reporting
- Make forking more reliable on Windows
- Make execvp() a few microseconds faster
- Make system() a few microseconds faster
- Tighten up the socket-related magic numbers
- Loosen restrictions on mmap() offset alignment
- Improve GetProgramExecutableName() with getenv("_")
- Use mkstemp() as basis for mktemp(), tmpfile(), tmpfd()
- Fix flakes in pthread_cancel_test, unix_test, fork_test
- Fix recently introduced futex stack overflow regression
- Let sockets be passed as stdio to subprocesses on Windows
- Improve security of bind() on Windows w/ SO_EXCLUSIVEADDRUSE
This commit is contained in:
Justine Tunney 2023-07-29 18:44:15 -07:00
parent 140a8a52e5
commit 18bb5888e1
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GPG key ID: BE714B4575D6E328
311 changed files with 1239 additions and 2622 deletions
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56
test/libc/mem/malloc_test.c
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@ -20,6 +20,7 @@
#include "libc/calls/struct/stat.h"
#include "libc/calls/struct/timespec.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/bits.h"
#include "libc/intrin/cxaatexit.internal.h"
#include "libc/intrin/safemacros.internal.h"
@ -51,12 +52,59 @@ void SetUp(void) {
if (IsWindows()) exit(0);
}
TEST(malloc, zeroMeansOne) {
ASSERT_GE(malloc_usable_size(gc(malloc(0))), 1);
TEST(malloc, zero) {
char *p;
ASSERT_NE(NULL, (p = malloc(0)));
if (IsAsan()) ASSERT_FALSE(__asan_is_valid(p, 1));
free(p);
}
TEST(calloc, zerosMeansOne) {
ASSERT_GE(malloc_usable_size(gc(calloc(0, 0))), 1);
TEST(realloc, bothAreZero_createsMinimalAllocation) {
char *p;
ASSERT_NE(NULL, (p = realloc(0, 0)));
if (IsAsan()) ASSERT_FALSE(__asan_is_valid(p, 1));
free(p);
}
TEST(realloc, ptrIsZero_createsAllocation) {
char *p;
ASSERT_NE(NULL, (p = realloc(0, 1)));
if (IsAsan()) ASSERT_TRUE(__asan_is_valid(p, 1));
if (IsAsan()) ASSERT_FALSE(__asan_is_valid(p + 1, 1));
ASSERT_EQ(p, realloc(p, 0));
if (IsAsan()) ASSERT_FALSE(__asan_is_valid(p, 1));
if (IsAsan()) ASSERT_FALSE(__asan_is_valid(p + 1, 1));
free(p);
}
TEST(realloc, sizeIsZero_shrinksAllocation) {
char *p;
ASSERT_NE(NULL, (p = malloc(1)));
if (IsAsan()) ASSERT_TRUE(__asan_is_valid(p, 1));
if (IsAsan()) ASSERT_FALSE(__asan_is_valid(p + 1, 1));
ASSERT_EQ(p, realloc(p, 0));
if (IsAsan()) ASSERT_FALSE(__asan_is_valid(p, 1));
if (IsAsan()) ASSERT_FALSE(__asan_is_valid(p + 1, 1));
free(p);
}
TEST(realloc_in_place, test) {
char *x = malloc(16);
EXPECT_EQ(x, realloc_in_place(x, 0));
EXPECT_EQ(x, realloc_in_place(x, 1));
*x = 2;
free(x);
}
BENCH(realloc_in_place, bench) {
volatile int i = 1000;
volatile char *x = malloc(i);
EZBENCH2("malloc", donothing, free(malloc(i)));
EZBENCH2("memalign", donothing, free(memalign(16, i)));
EZBENCH2("memalign", donothing, free(memalign(32, i)));
EZBENCH2("realloc", donothing, x = realloc(x, --i));
EZBENCH2("realloc_in_place", donothing, realloc_in_place(x, --i));
free(x);
}
void AppendStuff(char **p, size_t *n) {