8bitworkshop/test/cli/verilog/t_langext_1.v

// DESCRIPTION: Verilator: Verilog Test module
//
// A test of the +verilog1995ext+ and +verilog2001ext+ flags.
//
// This source code contains constructs that are valid in Verilog 2001 and
// SystemVerilog 2005/2009, but not in Verilog 1995. So it should fail if we
// set the language to be 1995, but not 2001.
//
// Compile only test, so no need for "All Finished" output.
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2012 by Jeremy Bennett.
// SPDX-License-Identifier: CC0-1.0

module t (/*AUTOARG*/
   // Inputs
   clk
   );
   input clk;

   wire [1:0] res;

   // Instantiate the test
   test test_i (// Outputs
                .res                    (res[1:0]),
                // Inputs
                .clk                    (clk),
                .in                     (1'b1));

endmodule

module test (// Outputs
             res,
             // Inputs
             clk,
             in
   );
   output reg [1:0] res;
   input         clk;
   input         in;

   // This is a Verilog 2001 test
   generate
      genvar i;
      for (i=0; i<2; i=i+1) begin
         always @(posedge clk) begin
            res[i:i] <= in;
         end
      end
   endgenerate
endmodule