VIRTUAL void Perl_sv_untaint(pTHX_ SV* sv);
VIRTUAL bool Perl_sv_upgrade(pTHX_ SV* sv, U32 mt);
VIRTUAL void Perl_sv_usepvn(pTHX_ SV* sv, char* ptr, STRLEN len);
-VIRTUAL void Perl_sv_vcatpvfn(pTHX_ SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *used_locale);
-VIRTUAL void Perl_sv_vsetpvfn(pTHX_ SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *used_locale);
+VIRTUAL void Perl_sv_vcatpvfn(pTHX_ SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted);
+VIRTUAL void Perl_sv_vsetpvfn(pTHX_ SV* sv, const char* pat, STRLEN patlen, va_list* args, SV** svargs, I32 svmax, bool *maybe_tainted);
VIRTUAL SV* Perl_swash_init(pTHX_ char* pkg, char* name, SV* listsv, I32 minbits, I32 none);
VIRTUAL UV Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr);
VIRTUAL void Perl_taint_env(pTHX);