VERILOG2029: Comparisons should have operands of same type

Summary

Reliability	Security	Maintainability	Code attribute	Effort to fix	Tags

MEDIUM	-	-	Intentionality \| Logical	10min	synthesis, vscode, simulation, linter

Description

Comparisons should have operands of same type. If not, one or both will be converted before the operation is performed. This is not necessarily a problem but the issue can be helpful if you prefer to be strict about disallowing implicit conversions.

Noncompliant code example

module fly;
  logic [7:0] a;
  struct packed { logic [7:0] x; } b;
  initial begin
    if (a == b) begin // Noncompliant
    end
  end
endmodule

Compliant solution

module fly;
  logic [7:0] a;
  logic [7:0] b;
  initial begin
    if (a == b) begin // Compliant
    end
  end
endmodule

Parameters

No parameters.