verilator/test_regress/t/t_inst_missing_bad.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain.
// SPDX-FileCopyrightText: 2012 Wilson Snyder
// SPDX-License-Identifier: CC0-1.0

module t;
  wire ok = 1'b0;
  // verilator lint_off UNDRIVEN
  wire nc;
  // verilator lint_on UNDRIVEN

  sub sub (
      ok
      ,,
      nc
  );
endmodule

module sub (
    input ok,
    input none,
    input nc,
    input missing
);
  initial
    if (ok && none && nc && missing) begin
    end  // No unused warning
endmodule