libraryIEEE;useIEEE.std_logic_1164.all;useIEEE.numeric_std.all;entitybugisport(dummy:instd_ulogic);endbug;architecturebehavofbugisbeginprocess(all)variableindex:integer;beginindex:=10;ifindex>3then-- index := index-1;endif;endprocess;endarchitecture;