verilator/test_regress/t/t_tri_dangle.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain.
// SPDX-FileCopyrightText: 2011 Wilson Snyder
// SPDX-License-Identifier: CC0-1.0

module t (  /*AUTOARG*/
    // Inouts
    AVDD,
    AVSS
);
  inout AVDD;
  inout AVSS;

  sub sub (  /*AUTOINST*/
      // Inouts
      .AVDD(AVDD),
      .AVSS(AVSS)
  );

  initial begin
    $write("*-* All Finished *-*\n");
    $finish;
  end
endmodule

module sub (  /*AUTOARG*/
    // Inouts
    AVDD,
    AVSS
);
  // verilator no_inline_module
  inout AVDD;
  inout AVSS;
  tri NON_IO;
  // +verilator+rand+reset+0 so z will read as zero
  initial if (NON_IO !== 'z) $stop;
endmodule