Apd |SV* |hv_iterkeysv |HE* entry
Apd |HE* |hv_iternext |HV* tb
Apd |SV* |hv_iternextsv |HV* hv|char** key|I32* retlen
-ApM |HE* |hv_iternext_flags|HV* tb|I32 flags
+ApMd |HE* |hv_iternext_flags|HV* tb|I32 flags
Apd |SV* |hv_iterval |HV* tb|HE* entry
Ap |void |hv_ksplit |HV* hv|IV newmax
Apd |void |hv_magic |HV* hv|GV* gv|int how