PERLVARI(Tcurcop, COP * VOL, &PL_compiling)
PERLVAR(Tin_eval, VOL int) /* trap "fatal" errors? */
PERLVAR(Tdelaymagic, int) /* ($<,$>) = ... */
-PERLVAR(Tdirty, bool) /* in the middle of tearing things down? */
+PERLVARI(Tdirty, bool, FALSE) /* in the middle of tearing things down? */
PERLVAR(Tlocalizing, int) /* are we processing a local() list? */
PERLVAR(Tcurstack, AV *) /* THE STACK */