1 files changed, 5 insertions, 0 deletions

diff --git a/lptree.h b/lptree.h
index b76c235..7dab362 100644
--- a/lptree.h
+++ b/lptree.h
@@ -56,11 +56,16 @@ typedef struct TTree {
       byte offset;  /* compact set offset (in bytes) */
       byte size;  /* compact set size (in bytes) */
       byte deflt;  /* default value */
+      byte bitmap[1];  /* bitmap (open array) */
     } set;  /* for compact sets */
   } u;
 } TTree;
 
 
+/* access to charset */
+#define treebuffer(t)      ((t)->u.set.bitmap)
+
+
 /*
 ** A complete pattern has its tree plus, if already compiled,
 ** its corresponding code