func raceprocdestroy(ctx uintptr)                                           { throw("race") }
func racemapshadow(addr unsafe.Pointer, size uintptr)                       { throw("race") }
func racewritepc(addr unsafe.Pointer, callerpc, pc uintptr)                 { throw("race") }
func racereadpc(addr unsafe.Pointer, callerpc, pc uintptr)                  { throw("race") }

func mapassign_fast64(t *maptype, h *hmap, key uint64) unsafe.Pointer {
	if h == nil {
		panic(plainError("assignment to entry in nil map"))
	}
	if raceenabled {
		callerpc := getcallerpc()
		racewritepc(unsafe.Pointer(h), callerpc, abi.FuncPCABIInternal(mapassign_fast64))
	}
	if h.flags&hashWriting != 0 {
		fatal("concurrent map writes")
	}
	hash := t.Hasher(noescape(unsafe.Pointer(&key)), uintptr(h.hash0))

func mapassign_fast32(t *maptype, h *hmap, key uint32) unsafe.Pointer {
	if h == nil {
		panic(plainError("assignment to entry in nil map"))
	}
	if raceenabled {
		callerpc := getcallerpc()
		racewritepc(unsafe.Pointer(h), callerpc, abi.FuncPCABIInternal(mapassign_fast32))
	}
	if h.flags&hashWriting != 0 {
		fatal("concurrent map writes")
	}
	hash := t.Hasher(noescape(unsafe.Pointer(&key)), uintptr(h.hash0))

	} else {
		// for non-composite objects we can write just the start
		// address, as any write must write the first byte.
		racewritepc(addr, callerpc, pc)
	}
}

//go:noescape
func racereadpc(addr unsafe.Pointer, callpc, pc uintptr)

//go:noescape
func racewritepc(addr unsafe.Pointer, callpc, pc uintptr)

type symbolizeCodeContext struct {
	pc   uintptr
	fn   *byte
	file *byte
	line uintptr

func mapassign_faststr(t *maptype, h *hmap, s string) unsafe.Pointer {
	if h == nil {
		panic(plainError("assignment to entry in nil map"))
	}
	if raceenabled {
		callerpc := getcallerpc()
		racewritepc(unsafe.Pointer(h), callerpc, abi.FuncPCABIInternal(mapassign_faststr))
	}
	if h.flags&hashWriting != 0 {
		fatal("concurrent map writes")
	}
	key := stringStructOf(&s)

	if h == nil {
		panic(plainError("assignment to entry in nil map"))
	}
	if raceenabled {
		callerpc := getcallerpc()
		pc := abi.FuncPCABIInternal(mapassign)
		racewritepc(unsafe.Pointer(h), callerpc, pc)
		raceReadObjectPC(t.Key, key, callerpc, pc)
	}
	if msanenabled {
		msanread(key, t.Key.Size_)
	}
	if asanenabled {
		asanread(key, t.Key.Size_)
	}

	}

	lock(&c.lock)
	if c.closed != 0 {
		unlock(&c.lock)
		panic(plainError("close of closed channel"))
	}

	if raceenabled {
		callerpc := getcallerpc()
		racewritepc(c.raceaddr(), callerpc, abi.FuncPCABIInternal(closechan))
		racerelease(c.raceaddr())
	}

	c.closed = 1

	var glist gList

	// release all readers
	for {
		sg := c.recvq.dequeue()

// See the doc comment for deferrangefunc for details.
func deferprocat(fn func(), frame any) {
	head := frame.(*atomic.Pointer[_defer])
	if raceenabled {
		racewritepc(unsafe.Pointer(head), getcallerpc(), abi.FuncPCABIInternal(deferprocat))
	}
	d1 := newdefer()
	d1.fn = fn
	for {
		d1.link = head.Load()
		if d1.link == badDefer() {

	PanicdottypeI     *obj.LSym
	Panicnildottype   *obj.LSym
	Panicoverflow     *obj.LSym
	Racefuncenter     *obj.LSym
	Racefuncexit      *obj.LSym
	Raceread          *obj.LSym
	Racereadrange     *obj.LSym
	Racewrite         *obj.LSym
	Racewriterange    *obj.LSym
	TypeAssert        *obj.LSym
	WBZero            *obj.LSym
	WBMove            *obj.LSym
	// Wasm
	SigPanic        *obj.LSym
	Staticuint64s   *obj.LSym

func Disable() {
	runtime.RaceDisable()
}

func Enable() {
	runtime.RaceEnable()
}

func Read(addr unsafe.Pointer) {
	runtime.RaceRead(addr)
}

func Write(addr unsafe.Pointer) {
	runtime.RaceWrite(addr)
}

func ReadRange(addr unsafe.Pointer, len int) {
	runtime.RaceReadRange(addr, len)
}

func WriteRange(addr unsafe.Pointer, len int) {
	runtime.RaceWriteRange(addr, len)
}

func Errors() int {