File: t_langext_2.v

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// DESCRIPTION: Verilator: Verilog Test module
//
// A test of the +1364-1995ext+ and +systemverilogext+ flags.
//
// This source code contains constructs that are valid in SystemVerilog 2009
// but not in Verilog 1995. So it should fail if we set the language to be
// Verilog 1995, but not SystemVerilog 2009.
//
// 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;

   reg [1:0]    res;


   // Instantiate the test
   test test_i (/*AUTOINST*/
              // Outputs
              .res                      (res),
              // Inputs
              .clk                      (clk),
              .in                       (1'b1));

endmodule

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

   // This is a SystemVerilog 2009 only test
   generate
      genvar i;
      for (i=0; i<2; i=i+1) begin
         always @(posedge clk) begin
            unique0 case (i)
                      0: res[0:0] <= in;
                      1: res[1:1] <= in;
                    endcase
         end
      end
   endgenerate
endmodule