src := make([]byte, tt.srcLen)
			if tt.srcLen >= 2 {
				src[1] = 42
			}
			dst := js.Global().Get("Uint8Array").New(tt.dstLen)

			if got, want := js.CopyBytesToJS(dst, src), tt.copyLen; got != want {
				t.Errorf("copied %d, want %d", got, want)
			}
			if tt.dstLen >= 2 {
				if got, want := dst.Index(1).Int(), 42; got != want {
					t.Errorf("got %d, want %d", got, want)

	if _, err := s.sr.Seek(0, io.SeekStart); err != nil {
		return nil, err
	}
	var stlen uint32
	var stoff uint64
	var nsyms uint32
	var symoff uint64
	switch f.TargetMachine {
	case U802TOCMAGIC:
		lhdr := new(LoaderHeader32)
		if err := binary.Read(s.sr, binary.BigEndian, lhdr); err != nil {
			return nil, err
		}
		stlen = lhdr.Lstlen
		stoff = uint64(lhdr.Lstoff)
		nsyms = lhdr.Lnsyms
		symoff = LDHDRSZ_32

package rand

/*
 * Uniform distribution
 *
 * algorithm by
 * DP Mitchell and JA Reeds
 */

const (
	rngLen   = 607
	rngTap   = 273
	rngMax   = 1 << 63
	rngMask  = rngMax - 1
	int32max = (1 << 31) - 1
)

var (
	// rngCooked used for seeding. See gen_cooked.go for details.
	rngCooked [rngLen]int64 = [...]int64{
		-4181792142133755926, -4576982950128230565, 1395769623340756751, 5333664234075297259,

	}

	// 3.  If emLen < hLen + sLen + 2, output "encoding error" and stop.

	if emLen < hLen+sLen+2 {
		return nil, ErrMessageTooLong
	}

	em := make([]byte, emLen)
	psLen := emLen - sLen - hLen - 2
	db := em[:psLen+1+sLen]
	h := em[psLen+1+sLen : emLen-1]

	// 4.  Generate a random octet string salt of length sLen; if sLen = 0,
	//     then salt is the empty string.
	//
	// 5.  Let

	var ptr unsafe.Pointer
	var salen _Socklen
	if to != nil {
		ptr, salen, err = to.sockaddr()
		if err != nil {
			return 0, err
		}
	}
	return sendmsgN(fd, p, oob, ptr, salen, flags)
}

func sendmsgNInet4(fd int, p, oob []byte, to *SockaddrInet4, flags int) (n int, err error) {
	ptr, salen, err := to.sockaddr()
	if err != nil {
		return 0, err
	}

		t.Skipf("skipping test: GOARCH=%s", runtime.GOARCH)
	}

	for arglen := 0; arglen <= runtime.MaxArgs; arglen++ {
		arglen := arglen
		t.Run(fmt.Sprintf("arg-%d", arglen), func(t *testing.T) {
			t.Parallel()
			args := make([]string, arglen)
			rets := make([]string, arglen+1)
			params := make([]uintptr, arglen)
			for i := range args {
				args[i] = fmt.Sprintf("int a%d", i)

	var iov [1]Iovec
	if len(p) > 0 {
		iov[0].Base = &p[0]
		iov[0].SetLen(len(p))
	}
	var ptr unsafe.Pointer
	var salen _Socklen
	if to != nil {
		ptr, salen, err = to.sockaddr()
		if err != nil {
			return 0, err
		}
	}
	return sendmsgN(fd, iov[:], oob, ptr, salen, flags)
}

// SendmsgBuffers sends a message on a socket to an address using the sendmsg

		// conservative - everything might be a pointer
		for off := child.argoff; off < child.argoff+child.arglen; off += goarch.PtrSize {
			dumpint(fieldKindPtr)
			dumpint(uint64(off))
		}
	}

	// Dump fields in the local vars section
	if stkmap == nil {
		// No locals information, dump everything.
		for off := child.arglen; off < s.varp-s.sp; off += goarch.PtrSize {
			dumpint(fieldKindPtr)
			dumpint(uint64(off))
		}

	}
	sa, salen := cgoSockaddr(IP(ip.AsSlice()), ip.Zone())
	if sa == nil {
		return nil, &DNSError{Err: "invalid address " + ip.String(), Name: addr}
	}

	return doBlockingWithCtx(ctx, addr, func() ([]string, error) {
		return cgoLookupAddrPTR(addr, sa, salen)
	})
}

func cgoLookupAddrPTR(addr string, sa *_C_struct_sockaddr, salen _C_socklen_t) (names []string, err error) {

}

//sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = libsocket.__xnet_sendmsg

func sendmsgN(fd int, p, oob []byte, ptr unsafe.Pointer, salen _Socklen, flags int) (n int, err error) {
	var msg Msghdr
	msg.Name = (*byte)(unsafe.Pointer(ptr))
	msg.Namelen = uint32(salen)
	var iov Iovec
	if len(p) > 0 {
		iov.Base = (*int8)(unsafe.Pointer(&p[0]))
		iov.SetLen(len(p))
	}
	var dummy int8
	if len(oob) > 0 {