# The C signature (only the parmeter part)
	var c_sig: String is lazy do
		var sig = new FlatBuffer
		sig.append("({called_recv.ctype} self")
		for i in [0..called_signature.arity[ do
			var mp = called_signature.mparameters[i]
			var mtype = mp.mtype
			if mp.is_vararg then
				mtype = mmethoddef.mclassdef.mmodule.array_type(mtype)
			end
			sig.append(", {mtype.ctype} p{i}")
		end
		sig.append(")")
		return sig.to_s
	end