time.Sleep(10*time.Millisecond)
}

func setup() {
	var Ts []interface{}
	buf := make([]byte, 128)
	
	for i := 0; i < 10000; i++ {
		s := string(buf)
		t := &T{ptr: new(*int)}
		runtime.SetFinalizer(t.ptr, func(**int) { panic("*int freed too early") })
		Ts = append(Ts, t)
		things = append(things, s[len(s):])
	}
	
	things = append(things, Ts...)

	if got := sizes.Sizeof(ts); got != 20 {
		t.Errorf("Sizeof(%v) with WordSize 4 = %d want 20", ts, got)
	}
	sizes = types.StdSizes{WordSize: 8, MaxAlign: 8}
	if got := sizes.Sizeof(ts); got != 40 {
		t.Errorf("Sizeof(%v) with WordSize 8 = %d want 40", ts, got)
	}
}

// go.dev/issue/16464
func TestAlignofNaclSlice(t *testing.T) {
	const src = `
package main

var s struct {
	x *int
	y []byte
}
`

void
x_cgo_thread_start(ThreadStart *arg)
{
	ThreadStart *ts;

	/* Make our own copy that can persist after we return. */
	_cgo_tsan_acquire();
	ts = malloc(sizeof *ts);
	_cgo_tsan_release();
	if(ts == nil) {
		fprintf(stderr, "runtime/cgo: out of memory in thread_start\n");
		abort();
	}
	*ts = *arg;

	_cgo_sys_thread_start(ts);	/* OS-dependent half */
}

#ifndef CGO_TSAN

	AND.S	$3, FROM, TMP
	BNE	_bunaligned

	ADD	$31, TS, TMP	/* do 32-byte chunks if possible */
	MOVW	TS, savedts-4(SP)
_b32loop:
	CMP	TMP, TE
	BLS	_b4tail

	MOVM.DB.W (FROM), [R0-R7]
	MOVM.DB.W [R0-R7], (TE)
	B	_b32loop

_b4tail:				/* do remaining words if possible */
	MOVW	savedts-4(SP), TS
	ADD	$3, TS, TMP
_b4loop:
	CMP	TMP, TE
	BLS	_b1tail

	pthread_sigmask(SIG_SETMASK, &oset, nil);

	if (err != 0) {
		fatalf("pthread_create failed: %s", strerror(err));
	}
}

extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);
static void*
threadentry(void *v)
{
	ThreadStart ts;

	ts = *(ThreadStart*)v;
	free(v);

	crosscall1(ts.fn, setg_gcc, ts.g);
	return nil;

static void*
threadentry(void *v)
{
	ThreadStart ts;

	ts = *(ThreadStart*)v;
	free(v);

	crosscall1(ts.fn, setg_gcc, (void*)ts.g);
	return nil;

	pthread_sigmask(SIG_SETMASK, &oset, nil);

	if (err != 0) {
		fatalf("pthread_create failed: %s", strerror(err));
	}
}

extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);
static void*
threadentry(void *v)
{
	ThreadStart ts;

	ts = *(ThreadStart*)v;
	free(v);

	crosscall1(ts.fn, setg_gcc, (void*)ts.g);
	return nil;

	pthread_sigmask(SIG_SETMASK, &oset, nil);

	if (err != 0) {
		fatalf("pthread_create failed: %s", strerror(err));
	}
}

extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);
static void*
threadentry(void *v)
{
	ThreadStart ts;

	ts = *(ThreadStart*)v;
	free(v);

	crosscall1(ts.fn, setg_gcc, ts.g);
	return nil;

	pthread_sigmask(SIG_SETMASK, &oset, nil);

	if (err != 0) {
		fatalf("pthread_create failed: %s", strerror(err));
	}
}

extern void crosscall_s390x(void (*fn)(void), void *g);

static void*
threadentry(void *v)
{
	ThreadStart ts;

	ts = *(ThreadStart*)v;
	free(v);

	// Save g for this thread in C TLS
	setg_gcc((void*)ts.g);

	crosscall_s390x(ts.fn, (void*)ts.g);
	return nil;

	pthread_sigmask(SIG_SETMASK, &oset, nil);

	if (err != 0) {
		fatalf("pthread_create failed: %s", strerror(err));
	}
}

extern void crosscall_ppc64(void (*fn)(void), void *g);

static void*
threadentry(void *v)
{
	ThreadStart ts;

	ts = *(ThreadStart*)v;
	_cgo_tsan_acquire();
	free(v);
	_cgo_tsan_release();

	// Save g for this thread in C TLS
	setg_gcc((void*)ts.g);