#define unpack_str Perl_unpack_str
#define unpackstring Perl_unpackstring
#define unsharepvn Perl_unsharepvn
-#if defined(PERL_CORE) || defined(PERL_EXT)
+#ifdef PERL_CORE
#define unshare_hek Perl_unshare_hek
#endif
#ifdef PERL_MAD
#define unpack_str(a,b,c,d,e,f,g,h) Perl_unpack_str(aTHX_ a,b,c,d,e,f,g,h)
#define unpackstring(a,b,c,d,e) Perl_unpackstring(aTHX_ a,b,c,d,e)
#define unsharepvn(a,b,c) Perl_unsharepvn(aTHX_ a,b,c)
-#if defined(PERL_CORE) || defined(PERL_EXT)
+#ifdef PERL_CORE
#define unshare_hek(a) Perl_unshare_hek(aTHX_ a)
#endif
#ifdef PERL_MAD