A case statement with an enum type condition does not include items that cover every enumerand. Note that this warning
will not be issued if there is a default label.
module fly;
enum {A, B} e;
initial begin
case (e)
A: ;
endcase
end
endmodule
module fly;
enum {A, B} e;
initial begin
case (e)
A: ;
B: ;
endcase
end
endmodule