use(p1[ui8])
	use(p1k[ui8])   // ERROR "index bounds check elided"
	use(p100k[ui8]) // ERROR "index bounds check elided"

	use(s[i16])
	use(a1[i16])
	use(a1k[i16])
	use(a100k[i16])
	use(p1[i16])
	use(p1k[i16])
	use(p100k[i16])

	// Unsigned 16-bit numbers don't need checks for len >= 2¹⁶.
	use(s[ui16])
	use(a1[ui16])
	use(a1k[ui16])
	use(a100k[ui16]) // ERROR "index bounds check elided"

	"dedup_by_group"

	"dedup_by_group"
)

import (
	/* comment */ io1 "io"
	"fmt" // for Printf
	/* comment */ "log"
	/* comment */ io2 "io"
)

import (
	/* comment */ io2 "io" // hello
	/* comment */ io1 "io"
	"math" /* right side */
	"fmt"
	// end
)

import (
	/* comment */ io1 "io" /* before */ // after
	"fmt"
	"errors" // for New
	io2 "io" // another
	// end

	"dedup_by_group"
)

import (
	"fmt" // for Printf
	/* comment */ io1 "io"
	/* comment */ io2 "io"
	/* comment */ "log"
)

import (
	"fmt"
	/* comment */ io1 "io"
	/* comment */ io2 "io" // hello
	"math"                 /* right side */
	// end
)

import (
	"errors" // for New
	"fmt"
	/* comment */ io1 "io" /* before */ // after
	io2 "io"               // another
	// end
)

	{id: "foo", typ: "<type 1 chan <- <type -1>>", want: "<-chan int8"},
	{id: "foo", typ: "<type 1 chan -< <type -1>>", want: "chan<- int8"},
	{id: "foo", typ: "<type 1 struct { I8 <type -1>; I16 <type -2> \"i16\"; }>", want: "struct{I8 int8; I16 int16 \"i16\"}"},

			lo = i
		}
	}
	return
}

func to16(x []uint32) []uint16 {
	var y []uint16
	for _, v := range x {
		if uint32(uint16(v)) != v {
			panic("bad 32->16 conversion")
		}
		y = append(y, uint16(v))
	}
	return y
}

func main() {
	flag.Parse()

	rang, except := scan(0, 0xFFFF)
	range16 = to16(rang)
	except16 = to16(except)
	range32, except32 = scan(0x10000, unicode.MaxRune)

var Dlog = dlog

func (l *dlogger) End()                  { l.end() }
func (l *dlogger) B(x bool) *dlogger     { return l.b(x) }
func (l *dlogger) I(x int) *dlogger      { return l.i(x) }
func (l *dlogger) I16(x int16) *dlogger  { return l.i16(x) }
func (l *dlogger) U64(x uint64) *dlogger { return l.u64(x) }
func (l *dlogger) Hex(x uint64) *dlogger { return l.hex(x) }
func (l *dlogger) P(x any) *dlogger      { return l.p(x) }

var i0 int
var i1 int
var i2 int
var i3 int
var i4 int
var i5 int
var i6 int
var i7 int
var i8 int
var i9 int
var i10 int
var i11 int
var i12 int
var i13 int
var i14 int
var i15 int
var i16 int

func main() {
	var f0 float32 = 0.0
	var f1 float32 = 1.0
	var f2 float32 = 2.0
	var f3 float32 = 3.0
	var f4 float32 = 4.0
	var f5 float32 = 5.0
	var f6 float32 = 6.0
	var f7 float32 = 7.0

	i6 = -1
	i7 = -i0
	i8 int = -1
	i9 int = -i4
	i10 = !i0 /* ERROR "not defined" */
	i11 = ^1
	i12 = ^i0
	i13 int = ^1
	i14 int = ^i4
	i15 = *i0 /* ERROR "cannot indirect" */
	i16 = &i0
	i17 = *i16
	i18 = <-i16 /* ERROR "cannot receive" */
	i19 = ~ /* ERROR "cannot use ~ outside of interface or type constraint (use ^ for bitwise complement)" */ i0

	// uint
	u0 = uint(1)
	u1 uint = u0
	u2 = +1
	u3 = +u0

type TB bool
type TS string

func (v TI) String() string   { return Sprintf("I: %d", int(v)) }
func (v TI8) String() string  { return Sprintf("I8: %d", int8(v)) }
func (v TI16) String() string { return Sprintf("I16: %d", int16(v)) }
func (v TI32) String() string { return Sprintf("I32: %d", int32(v)) }
func (v TI64) String() string { return Sprintf("I64: %d", int64(v)) }
func (v TU) String() string   { return Sprintf("U: %d", uint(v)) }

}

func (c *UDPConn) writeTo(b []byte, addr *UDPAddr) (int, error) {
	if addr == nil {
		return 0, errMissingAddress
	}
	h := new(udpHeader)
	h.raddr = addr.IP.To16()
	h.laddr = c.fd.laddr.(*UDPAddr).IP.To16()
	h.ifcaddr = IPv6zero // ignored (receive only)
	h.rport = uint16(addr.Port)
	h.lport = uint16(c.fd.laddr.(*UDPAddr).Port)

	buf := make([]byte, udpHeaderSize+len(b))
	i := copy(buf, h.Bytes())