1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
  
     | 
    
      // DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2016 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
module t
   (
   input wire clk,
   input wire a,
   input wire b
   );
   integer q;
   // bug1120
   always @ (a or posedge clk)
     begin
        if (a)
          q = 0;
        else
          q = q + 1;
     end
   // bug934
   integer qb;
   always @((a && b) or posedge clk) begin
      if (a)
        qb = 0;
      else
        qb = qb + 1;
   end
   always @(posedge clk) $display("%d", qb); // So qb is not optimized away
endmodule
 
     |