#define PL_sig_pending (*Perl_Isig_pending_ptr(aTHX))
#undef PL_sighandlerp
#define PL_sighandlerp (*Perl_Isighandlerp_ptr(aTHX))
+#undef PL_signalhook
+#define PL_signalhook (*Perl_Isignalhook_ptr(aTHX))
#undef PL_signals
#define PL_signals (*Perl_Isignals_ptr(aTHX))
#undef PL_slab_count