#define TAINT_NOT (PL_tainted = FALSE)
#define TAINT_IF(c) if (c) { PL_tainted = TRUE; }
#define TAINT_ENV() if (PL_tainting) { taint_env(); }
-#define TAINT_PROPER(s) if (PL_tainting) { taint_proper(Nullch, s); }
+#define TAINT_PROPER(s) if (PL_tainting) { taint_proper(NULL, s); }
/* XXX All process group stuff is handled in pp_sys.c. Should these
defines move there? If so, I could simplify this a lot. --AD 9/96.