Add tree freeing

1 files changed, 2 insertions, 0 deletions

diff --git a/tree.h b/tree.h
index 0d94f6d..650d06f 100644
--- a/tree.h
+++ b/tree.h
@@ -26,4 +26,6 @@ ptree* mkop(int, int, ptree*, ptree*);
 
 void update_type_info(ptree*, int);
 
+void free_tree(ptree*);
+
 #endif