func testServeFileContentType(t *testing.T, mode testMode) {
	const ctype = "icecream/chocolate"
	ts := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
		switch r.FormValue("override") {
		case "1":
			w.Header().Set("Content-Type", ctype)
		case "2":
			// Explicitly inhibit sniffing.
			w.Header()["Content-Type"] = []string{}
		}
		ServeFile(w, r, "testdata/file")
	})).ts

(AndB (Leq32 (Const32 [c]) x) ((Less|Leq)32 x (Const32 [d]))) && d >= c => ((Less|Leq)32U (Sub32 <x.Type> x (Const32 <x.Type> [c])) (Const32 <x.Type> [d-c]))
(AndB (Leq16 (Const16 [c]) x) ((Less|Leq)16 x (Const16 [d]))) && d >= c => ((Less|Leq)16U (Sub16 <x.Type> x (Const16 <x.Type> [c])) (Const16 <x.Type> [d-c]))

		} else {
			h = _INVALID_HANDLE_VALUE
			timeout = uintptr(us) / 1000 // ms units
		}
		stdcall2(_WaitForSingleObject, h, timeout)
	})
}

func ctrlHandler(_type uint32) uintptr {
	var s uint32

	switch _type {
	case _CTRL_C_EVENT, _CTRL_BREAK_EVENT:
		s = _SIGINT
	case _CTRL_CLOSE_EVENT, _CTRL_LOGOFF_EVENT, _CTRL_SHUTDOWN_EVENT:
		s = _SIGTERM
	default:
		return 0
	}

}
func nilinterequal(p, q unsafe.Pointer) bool {
	x := *(*eface)(p)
	y := *(*eface)(q)
	return x._type == y._type && efaceeq(x._type, x.data, y.data)
}
func efaceeq(t *_type, x, y unsafe.Pointer) bool {
	if t == nil {
		return true
	}
	eq := t.Equal
	if eq == nil {
		panic(errorString("comparing uncomparable type " + toRType(t).string()))
	}
	if isDirectIface(t) {

const gcBitsHeaderBytes = unsafe.Sizeof(gcBitsHeader{})

type gcBitsHeader struct {
	free uintptr // free is the index into bits of the next free byte.
	next uintptr // *gcBits triggers recursive type bug. (issue 14620)
}

type gcBitsArena struct {
	_ sys.NotInHeap
	// gcBitsHeader // side step recursive type bug (issue 14620) by including fields by hand.

	}
}

// cgoCheckTypedBlock checks the block of memory at src, for up to size bytes,
// and throws if it finds an unpinned Go pointer. The type of the memory is typ,
// and src is off bytes into that type.
//
//go:nosplit
//go:nowritebarrier
func cgoCheckTypedBlock(typ *_type, src unsafe.Pointer, off, size uintptr) {
	// Anything past typ.PtrBytes is not a pointer.
	if typ.PtrBytes <= off {
		return
	}

	if list == nil {
		return
	}

	var named, anonymous bool

	var typ Type
	var prev syntax.Expr
	for i, field := range list {
		ftype := field.Type
		// type-check type of grouped fields only once
		if ftype != prev {
			prev = ftype
			if t, _ := ftype.(*syntax.DotsType); t != nil {
				ftype = t.Elem
				if variadicOk && i == len(list)-1 {
					variadic = true
				} else {

	// priority and causing a slowdown in execution time

	OR	R0, R1
	MOVD	R0, R11
	BR	runtime·morestack(SB)

// reflectcall: call a function with the given argument list
// func call(stackArgsType *_type, f *FuncVal, stackArgs *byte, stackArgsSize, stackRetOffset, frameSize uint32, regArgs *abi.RegArgs).
// we don't have variable-sized frames, so we use a small number

	same = r0 != 0
	return
}

func DnsQuery(name string, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) {
	var _p0 *uint16
	_p0, status = syscall.UTF16PtrFromString(name)
	if status != nil {
		return
	}
	return _DnsQuery(_p0, qtype, options, extra, qrs, pr)
}

func _DnsQuery(name *uint16, qtype uint16, options uint32, extra *byte, qrs **DNSRecord, pr *byte) (status error) {

	MOVQ 152(R12), X10
	MOVQ 160(R12), X11
	MOVQ 168(R12), X12
	MOVQ 176(R12), X13
	MOVQ 184(R12), X14
	RET

// reflectcall: call a function with the given argument list
// func call(stackArgsType *_type, f *FuncVal, stackArgs *byte, stackArgsSize, stackRetOffset, frameSize uint32, regArgs *abi.RegArgs).
// we don't have variable-sized frames, so we use a small number