module test_inst (
         clk,
         reset_n,
         dout
);

         parameter MEM_DQ_WIDTH                          = "";
         parameter MEM_READ_DQS_WIDTH                    = "";

         localparam NUMBER_OF_READ_DQ_PER_DQS = MEM_DQ_WIDTH / MEM_READ_DQS_WIDTH;
         
         input clk;
         input reset_n;
         output  dout;

         wire [NUMBER_OF_READ_DQ_PER_DQS - 1:0] error_word;

         wire [NUMBER_OF_READ_DQ_PER_DQS - 1:0] processed_error_word;
         
         genvar rank;
         generate
                 for(rank = 0; rank < NUMBER_OF_READ_DQ_PER_DQS; rank = rank + 1)
                 begin: error_word_gen
                         assign processed_error_word[rank] = (error_word[rank] !== 1'b0);
                 end
         endgenerate

endmodule


module test (
                 input  wire         clk,
                 input  wire         reset
         );

         test_inst #(
                 .MEM_DQ_WIDTH                         (72),
                 .MEM_READ_DQS_WIDTH                   (9)
                ) u_test_inst (
                 .clk           (clk),
                 .reset_n       (~reset),
                 .dout          ()
         );

endmodule

verilator -sp -Wno-fatal --top-module test test.v
%Warning-WIDTH: test.v:22: Operator LT expects 32 bits on the RHS, but RHS's VARREF 'NUMBER_OF_READ_DQ_PER_DQS' generates 1 bits.
%Warning-WIDTH: Use "/* verilator lint_off WIDTH */" and lint_on around source to disable this message.
%Error: test.v:22: Unsupported: Can't unroll generate for; init/final/increment too large or four state
%Error: test.v:22: For loop doesn't have genvar index, or is malformed
%Error: test.v:22: Unsupported: Can't unroll generate for; init/final/increment too large or four state
%Error: test.v:22: For loop doesn't have genvar index, or is malformed
%Error: Exiting due to 4 error(s)
%Error: Command Failed /tools/verilator/verilator-3.832/bin/verilator_bin -sp -Wno-fatal --top-module test test.v