Optional register property in stacking rules must be -1 when absent.

Fixed this.

diff --git a/util/ncgg/cgg.y b/util/ncgg/cgg.y
index 37ece48..34af468 100644 (file)
--- a/util/ncgg/cgg.y
+++ b/util/ncgg/cgg.y
@@ -525,7 +525,7 @@ stackdeflist_el
        ;
 optuses
        : /* empty */
-               { $$ = 0; nallreg=0;}
+               { $$ = -1; nallreg=0;}
        | USES propno
                { $$ = $2; nallreg = 1; allreg[0] = $2; }
        ;