Rafael.
p4raw-id: //depot/perl@27067
#define G_WARN_ONCE 8 /* set if 'once' ever enabled */
#define G_WARN_ALL_MASK (G_WARN_ALL_ON|G_WARN_ALL_OFF)
-#define pWARN_STD Nullsv
-#define pWARN_ALL (Nullsv+1) /* use warnings 'all' */
-#define pWARN_NONE (Nullsv+2) /* no warnings 'all' */
+#define pWARN_STD NULL
+#define pWARN_ALL (NULL+1) /* use warnings 'all' */
+#define pWARN_NONE (NULL+2) /* no warnings 'all' */
#define specialWARN(x) ((x) == pWARN_STD || (x) == pWARN_ALL || \
(x) == pWARN_NONE)