%Error: t/t_duplicated_gen_blocks_bad.v:11:12: Duplicate declaration of generate block: 'block'
                                             : ... note: In instance 't'
   11 |    begin : block
      |            ^~~~~
        t/t_duplicated_gen_blocks_bad.v:9:12: ... Location of original declaration
    9 |    begin : block
      |            ^~~~~
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error: t/t_duplicated_gen_blocks_bad.v:15:23: Duplicate declaration of generate block: 'block1'
                                             : ... note: In instance 't'
   15 |    if (X > 1) begin : block1
      |                       ^~~~~~
        t/t_duplicated_gen_blocks_bad.v:13:23: ... Location of original declaration
   13 |    if (X > 0) begin : block1
      |                       ^~~~~~
%Error: Exiting due to