verilator/test_regress/t/t_interface_virtual_param.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain.
// SPDX-FileCopyrightText: 2023 Antmicro Ltd
// SPDX-License-Identifier: CC0-1.0

interface Bus #(
    parameter int W = 1,
    X = 2
);
  logic [W-1:0] data;
endinterface

interface BusTyped #(
    parameter type T
);
  T data;
endinterface

typedef struct packed {logic x;} my_logic_t;

module t;
  Bus #(6, 3) intf1 ();
  virtual Bus #(6, 3) vintf1 = intf1;

  Bus intf2 ();
  virtual Bus #(
      .W(1),
      .X(2)
  ) vintf2 = intf2;

  BusTyped #(my_logic_t) intf3 ();
  virtual BusTyped #(my_logic_t) vintf3 = intf3;

  initial begin
    intf1.data = '1;
    if (vintf1.data != 6'b111111) $stop;
    if (vintf1.X != 3) $stop;

    intf2.data = '1;
    if (vintf2.data != 1'b1) $stop;
    if (vintf2.X != 2) $stop;

    intf3.data.x = '1;
    if (vintf3.data.x != 1'b1) $stop;

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