const runtime.clobberdeadPtr

3 uses

	runtime (current package)
		mbitmap.go#L339: const clobberdeadPtr = uintptr(0xdeaddead | 0xdeaddead<<((^uintptr(0)>>63)*32))
		mbitmap.go#L390: 		if (GOARCH == "amd64" || GOARCH == "arm64") && p == clobberdeadPtr && debug.invalidptr != 0 {
		mbitmap.go#L426: 	return spanOf(p) == nil && p != clobberdeadPtr