Added a check that a tokenset in a stackpattern contains tokens

that all have the same size.

diff --git a/util/ncgg/cgg.y b/util/ncgg/cgg.y
index 1edca62..8c1974e 100644 (file)
--- a/util/ncgg/cgg.y
+++ b/util/ncgg/cgg.y
@@ -20,6 +20,7 @@ int startline;
 int npatterns;
 int att_type;
 int patindex[MAXPATTERNS];
+extern set_t l_sets[];
 
 int emhere=0;  /* lexical analyzer flag */
 int optexact=0;        /* Inside "with exact" rule */
@@ -742,6 +743,9 @@ setlist
                { NEXT(tokpatlen,TOKPATMAX,"Stack pattern");
                  tokpatset[tokpatlen-1] = $2;
                  checkunstacking($2);
+                 if (l_sets[$2].set_size == 0) {
+                       error("Tokenset is empty or has elements with different sizes");
+                 }
                }
        ;
 kills