verilator/test_regress/t/t_var_static_param.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain.
// SPDX-FileCopyrightText: 2020 Wilson Snyder
// SPDX-License-Identifier: CC0-1.0

// verilog_format: off
`define stop $stop
`define checkh(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d:  got='h%x exp='h%x\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0)
// verilog_format: on

module t;

  sub #(.P(1)) suba ();
  sub #(.P(10)) subb ();

  int v;

  initial begin
    v = suba.f_no_st();
    `checkh(v, 3);
    v = suba.f_no_st();
    `checkh(v, 4);
    v = subb.f_no_st();
    `checkh(v, 'hc);
    v = subb.f_no_st();
    `checkh(v, 'h16);
    v = suba.f_no_st();
    `checkh(v, 5);
    $write("*-* All Finished *-*\n");
    $finish;
  end

endmodule

module sub;
  parameter P = 1;
  // verilator lint_off IMPLICITSTATIC
  function int f_no_st();
    // This static is unique within each parameterized module
    static int st = 2;
    st += P;
    return st;
  endfunction
endmodule