=cut
*/
-#define sv_taint(sv) sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0)
+#define sv_taint(sv) sv_magic((sv), NULL, PERL_MAGIC_taint, NULL, 0)
#define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv))
#define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END