PERL_CALLCONV I32 Perl_ibcmp(pTHX_ const char* a, const char* b, I32 len);
PERL_CALLCONV I32 Perl_ibcmp_locale(pTHX_ const char* a, const char* b, I32 len);
PERL_CALLCONV bool Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective);
+PERL_CALLCONV void Perl_init_argv_symbols(pTHX_ int, char **);
PERL_CALLCONV void Perl_init_debugger(pTHX);
PERL_CALLCONV void Perl_init_stacks(pTHX);
PERL_CALLCONV void Perl_init_tm(pTHX_ struct tm *ptm);
PERL_CALLCONV UV Perl_to_utf8_lower(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp);
PERL_CALLCONV UV Perl_to_utf8_upper(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp);
PERL_CALLCONV UV Perl_to_utf8_title(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp);
+PERL_CALLCONV UV Perl_to_utf8_fold(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp);
#if defined(UNLINK_ALL_VERSIONS)
PERL_CALLCONV I32 Perl_unlnk(pTHX_ char* f);
#endif