(littlelen), SV_GMAGIC)
#define sv_mortalcopy(sv) \
Perl_sv_mortalcopy_flags(aTHX_ sv, SV_GMAGIC|SV_DO_COW_SVSETSV)
+#define sv_cathek(sv,hek) \
+ STMT_START { \
+ HEK * const bmxk = hek; \
+ sv_catpvn_flags(sv, HEK_KEY(bmxk), HEK_LEN(bmxk), \
+ HEK_UTF8(bmxk) ? SV_CATUTF8 : SV_CATBYTES); \
+ } STMT_END
/* Should be named SvCatPVN_utf8_upgrade? */
#define sv_catpvn_nomg_utf8_upgrade(dsv, sstr, slen, nsv) \