(((smeta)->mro_which && (which) == (smeta)->mro_which) \
? (smeta)->mro_linear_current \
: Perl_mro_get_private_data(aTHX_ (smeta), (which)))
-#define mro_isa_changed_in(stash) mro_isa_changed_in3(stash, NULL, 0)
/* Subject to change.
Don't access this directly.
#define HV_FETCH_LVALUE 0x10
#define HV_FETCH_JUST_SV 0x20
#define HV_DELETE 0x40
+#define HV_FETCH_EMPTY_HE 0x80 /* Leave HeVAL null. */
/*
=for apidoc newHV