message: allow 1b signed types
diff: @@ -32,8 +32,7 @@ iHdlExpr *Utils::mkWireT(Verilog2001Parser::Range_Context * range,
  if (range)
  return mkWireT(VerExprParser::visitRange_(range), signed_);
  else {
  - assert(signed_ == false);
  - return mkWireT();
  + return mkWireT(iHdlExpr::INT(1), signed_);
  }
  }
  