# VERILOG2147: Unreachable items in case statement should be removed ## Summary ```{raw} html

Count: 1

ReliabilitySecurityMaintainabilityCode attributeEffort to fixTags
HIGH--Intentionality | Logical10minsynthesis, vscode, linter, simulation
``` ## Description ```{raw} html

A case item is unreachable because earlier wilcard items completely cover all of its possible values.

Noncompliant code example

module fly;
  logic [2:0] a;
  initial begin
    casez (a)
      3'b10?:;
      3'b101:;
      default;
    endcase
  end
endmodule

Compliant solution

module fly;
  logic [2:0] a;
  initial begin
    casez (a)
      3'b10?:;
      3'b001:;
      default;
    endcase
  end
endmodule
``` ## Parameters No parameters. ```{raw} html ```