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Improve docs of more system calls

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This change also found a few POSIX compliance bugs with errnos. Another
bug was discovered where, on Windows, pread() and pwrite() could modify
the file position in cases where ReadFile() returned an error e.g. when
seeking past the end of file. We also have more tests!
This commit is contained in:
Justine Tunney 2022-10-02 22:14:33 -07:00
parent af24c19db3
commit ccbae7799e
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GPG key ID: BE714B4575D6E328
39 changed files with 589 additions and 175 deletions
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6
libc/testlib/testrunner.c
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@ -51,7 +51,7 @@ static int x;
char g_testlib_olddir[PATH_MAX];
char g_testlib_tmpdir[PATH_MAX];
struct sigaction wanthandlers[31];
static pthread_spinlock_t testlib_error_lock;
static pthread_mutex_t testlib_error_lock;
void testlib_finish(void) {
if (g_testlib_failed) {
@ -63,7 +63,7 @@ void testlib_finish(void) {
void testlib_error_enter(const char *file, const char *func) {
atomic_fetch_sub_explicit(&__ftrace, 1, memory_order_relaxed);
atomic_fetch_sub_explicit(&__strace, 1, memory_order_relaxed);
if (!__vforked) pthread_spin_lock(&testlib_error_lock);
if (!__vforked) pthread_mutex_lock(&testlib_error_lock);
if (!IsWindows()) sys_getpid(); /* make strace easier to read */
if (!IsWindows()) sys_getpid();
if (g_testlib_shoulddebugbreak) {
@ -76,7 +76,7 @@ void testlib_error_enter(const char *file, const char *func) {
void testlib_error_leave(void) {
atomic_fetch_add_explicit(&__ftrace, 1, memory_order_relaxed);
atomic_fetch_add_explicit(&__strace, 1, memory_order_relaxed);
pthread_spin_unlock(&testlib_error_lock);
pthread_mutex_unlock(&testlib_error_lock);
}
wontreturn void testlib_abort(void) {