+avhvswitch Array/hash switch ck_null t1
+
+runcv __SUB__ ck_null s0
+
+# fc and \F
+fc fc ck_fun fstu% S?
+
+padcv private subroutine ck_null d0
+introcv private subroutine ck_null d0
+clonecv private subroutine ck_null d0
+padrange list of private variables ck_null d0
+refassign lvalue ref assignment ck_refassign ds2
+lvref lvalue ref assignment ck_null d%
+lvrefslice lvalue ref assignment ck_null d@
+lvavref lvalue array reference ck_null d%
+anonconst anonymous constant ck_null ds1