#endif
#if defined(PERL_IN_UNIVERSAL_C) || defined(PERL_DECL_PROT)
-STATIC SV* S_isa_lookup(pTHX_ HV *stash, const char *name, int len, int level);
+STATIC SV* S_isa_lookup(pTHX_ HV *stash, const char *name, HV *name_stash, int len, int level);
#endif
#if defined(PERL_IN_LOCALE_C) || defined(PERL_DECL_PROT)