// mostly with values that do not live in the Go heap anyway.
//
// An UnsafePointer must not be copied.
type UnsafePointer struct {
	noCopy noCopy
	value  unsafe.Pointer
}

// Load accesses and returns the value atomically.
//
//go:nosplit
func (u *UnsafePointer) Load() unsafe.Pointer {
	return Loadp(unsafe.Pointer(&u.value))
}

// StoreNoWB updates the value atomically.

// atomicSpanSetSpinePointer is an atomically-accessed spanSetSpinePointer.
//
// It has the same semantics as atomic.UnsafePointer.
type atomicSpanSetSpinePointer struct {
	a atomic.UnsafePointer
}

// Loads the spanSetSpinePointer and returns it.
//
// It has the same semantics as atomic.UnsafePointer.
func (s *atomicSpanSetSpinePointer) Load() spanSetSpinePointer {
	return spanSetSpinePointer{s.a.Load()}
}

	return (*bool)(v.FieldByName(name).Addr().UnsafePointer())
}

// stringFieldAddr(conf, name) returns the address of the string field conf.<name>.
// For accessing unexported fields.
func stringFieldAddr(conf *Config, name string) *string {
	v := reflect.Indirect(reflect.ValueOf(conf))
	return (*string)(v.FieldByName(name).Addr().UnsafePointer())
}

	// of v.
	return (*abi.Type)(abi.NoEscape(unsafe.Pointer(v.typ_)))
}

// pointer returns the underlying pointer represented by v.
// v.Kind() must be Pointer, Map, Chan, Func, or UnsafePointer
func (v Value) pointer() unsafe.Pointer {
	if v.typ().Size() != goarch.PtrSize || !v.typ().Pointers() {
		panic("can't call pointer on a non-pointer Value")
	}
	if v.flag&flagIndir != 0 {

		p := ep.data
		if t.Kind_&abi.KindDirectIface == 0 {
			p = *(*unsafe.Pointer)(p)
		}
		if p == nil || !cgoIsGoPointer(p) {
			return
		}
		aep := efaceOf(&arg)
		switch aep._type.Kind_ & abi.KindMask {
		case abi.Bool:
			if t.Kind_&abi.KindMask == abi.UnsafePointer {
				// We don't know the type of the element.
				break
			}

	}
}

func (p *pp) fmtPointer(value reflect.Value, verb rune) {
	var u uintptr
	switch value.Kind() {
	case reflect.Chan, reflect.Func, reflect.Map, reflect.Pointer, reflect.Slice, reflect.UnsafePointer:
		u = uintptr(value.UnsafePointer())
	default:
		p.badVerb(verb)
		return
	}

	switch verb {
	case 'v':
		if p.fmt.sharpV {
			p.buf.writeByte('(')
			p.buf.writeString(value.Type().String())

	e := efaceOf(i)
	etyp := e._type
	if etyp == nil {
		panic(errorString("runtime.Pinner: argument is nil"))
	}
	if kind := etyp.Kind_ & abi.KindMask; kind != abi.Pointer && kind != abi.UnsafePointer {
		panic(errorString("runtime.Pinner: argument is not a pointer: " + toRType(etyp).string()))
	}
	if inUserArenaChunk(uintptr(e.data)) {
		// Arena-allocated objects are not eligible for pinning.

// package name, as defined by the import environment of file.
func TypeExpr(f *ast.File, pkg *types.Package, typ types.Type) ast.Expr {
	switch t := typ.(type) {
	case *types.Basic:
		switch t.Kind() {
		case types.UnsafePointer:
			return &ast.SelectorExpr{X: ast.NewIdent("unsafe"), Sel: ast.NewIdent("Pointer")}
		default:
			return ast.NewIdent(t.Name())
		}
	case *types.Pointer:
		x := TypeExpr(f, pkg, t.Elem())
		if x == nil {

	Int64
	Uint
	Uint8
	Uint16
	Uint32
	Uint64
	Uintptr
	Float32
	Float64
	Complex64
	Complex128
	Array
	Chan
	Func
	Interface
	Map
	Pointer
	Slice
	String
	Struct
	UnsafePointer
)

const (
	// TODO (khr, drchase) why aren't these in TFlag?  Investigate, fix if possible.
	KindDirectIface Kind = 1 << 5
	KindGCProg      Kind = 1 << 6 // Type.gc points to GC program

		check.verifyVersionf(call.Fun, go1_17, "unsafe.Add")

		check.assignment(x, Typ[UnsafePointer], "argument to unsafe.Add")
		if x.mode == invalid {
			return
		}

		y := args[1]
		if !check.isValidIndex(y, InvalidUnsafeAdd, "length", true) {
			return
		}

		x.mode = value
		x.typ = Typ[UnsafePointer]
		if check.recordTypes() {
			check.recordBuiltinType(call.Fun, makeSig(x.typ, x.typ, y.typ))