From d18448b01840f431945c8b257d75963fcb081dfa Mon Sep 17 00:00:00 2001
From: Joe Marshall <jmarshall@alum.mit.edu>
Date: Sun, 21 Feb 2010 11:41:09 -0800
Subject: [PATCH] Add NULL? to constant folding operators.

---
 src/runtime/scomb.scm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/runtime/scomb.scm b/src/runtime/scomb.scm
index 336f34849..bf8e9a1da 100644
--- a/src/runtime/scomb.scm
+++ b/src/runtime/scomb.scm
@@ -105,6 +105,7 @@ USA.
 	       NEGATIVE-FIXNUM?
 	       NEGATIVE?
 	       NOT
+	       NULL?
 	       OBJECT-TYPE
 	       OBJECT-TYPE?
 	       ONE-PLUS-FIXNUM
-- 
2.25.1