s |void |cv_dump |CV *cv
s |CV* |cv_clone2 |CV *proto|CV *outside
s |bool |scalar_mod_type|OP *o|I32 type
+s |OP * |method_2entersub|OP *o|OP *o2|OP *svop
s |OP * |my_kid |OP *o|OP *attrs
s |OP * |dup_attrlist |OP *o
s |void |apply_attrs |HV *stash|SV *target|OP *attrs