if s == nil {
		if (GOARCH == "amd64" || GOARCH == "arm64") && p == clobberdeadPtr && debug.invalidptr != 0 {
			// Crash if clobberdeadPtr is seen. Only on AMD64 and ARM64 for now,
			// as they are the only platform where compiler's clobberdead mode is
			// implemented. On these platforms clobberdeadPtr cannot be a valid address.
			badPointer(s, p, refBase, refOff)
		}
		return
	}