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-rw-r--r--libguile/weaks.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/libguile/weaks.h b/libguile/weaks.h
index 5cb8bc388..fc16f8bf8 100644
--- a/libguile/weaks.h
+++ b/libguile/weaks.h
@@ -3,7 +3,7 @@
#ifndef SCM_WEAKS_H
#define SCM_WEAKS_H
-/* Copyright (C) 1995,1996,2000,2001, 2003, 2006, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,2000,2001, 2003, 2006, 2008, 2009, 2011 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@@ -50,7 +50,7 @@ SCM_INTERNAL SCM scm_doubly_weak_pair (SCM car, SCM cdr);
/* Testing the weak component(s) of a cell for reachability. */
#define SCM_WEAK_PAIR_WORD_DELETED_P(_cell, _word) \
- (SCM_CELL_OBJECT ((_cell), (_word)) == SCM_PACK (NULL))
+ (SCM_UNPACK (SCM_CELL_OBJECT ((_cell), (_word))) == 0)
#define SCM_WEAK_PAIR_CAR_DELETED_P(_cell) \
(SCM_WEAK_PAIR_WORD_DELETED_P ((_cell), 0))
#define SCM_WEAK_PAIR_CDR_DELETED_P(_cell) \