1 files changed, 2 insertions, 0 deletions
diff --git a/src/interp.h b/src/interp.h
index b7b3025..0564ee0 100644
--- a/src/interp.h
+++ b/src/interp.h
@@ -26,6 +26,8 @@ struct interp {
     IntVector empty_space;
     String2IntHashTable symbols;
     SExpRef stack;
+    SExpRef t;
+    SExpRef f;
     SExpRef reg;
     SExpRef top_level;
     SExpRef nil;