Fix bug in guaranteed-long/upper-limit and lower-limit.

diff --git a/v7/src/compiler/machines/C/machin.scm b/v7/src/compiler/machines/C/machin.scm
index e07d6340bc162fbe2475d8da26998ad739455aa8..d617a5e5abd04dd62389e7f89823f4717252bc07 100644 (file)
--- a/v7/src/compiler/machines/C/machin.scm
+++ b/v7/src/compiler/machines/C/machin.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: machin.scm,v 1.5 1993/10/28 02:55:01 gjr Exp $
+$Id: machin.scm,v 1.6 1993/11/08 22:41:40 gjr Exp $
 
 Copyright (c) 1992-1993 Massachusetts Institute of Technology
 
@@ -64,7 +64,7 @@ MIT in each case. |#
 (define-integrable max-tag-width 8)
 
 (define-integrable guaranteed-long/upper-limit
-  (expt 2 min-long-width))
+  (expt 2 (-1+ min-long-width)))
 (define-integrable guaranteed-long/lower-limit
   (- (-1+ guaranteed-long/upper-limit)))