var sync.expunged

9 uses

	sync (current package)
		map.go#L70: var expunged = unsafe.Pointer(new(interface{}))
		map.go#L129: 	if p == nil || p == expunged {
		map.go#L172: 		if p == expunged {
		map.go#L186: 	return atomic.CompareAndSwapPointer(&e.p, expunged, nil)
		map.go#L241: 	if p == expunged {
		map.go#L257: 		if p == expunged {
		map.go#L299: 		if p == nil || p == expunged {
		map.go#L378: 		if atomic.CompareAndSwapPointer(&e.p, nil, expunged) {
		map.go#L383: 	return p == expunged