Adds type checking procedure arguments

1 files changed, 1 insertions, 0 deletions

diff --git a/tree.c b/tree.c
index a1a3f0f..b30fa35 100644
--- a/tree.c
+++ b/tree.c
@@ -22,6 +22,7 @@ ptree *l, *r;
 	t->l = l;
 	t->r = r;
 	t->ret_type = 0;
+	t->attr.nval = 0;
 
 	return t;
 }