From 96c31ac787a64d9c21eb498fc8af7e85e100eb5a Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 13 Mar 2009 00:30:15 +0000
Subject: [PATCH] * bignum.c (bigfixize): zero length Bignum is 0.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22920 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog | 4 ++++
 bignum.c  | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 7748ac8f36..8a4f0162d6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Mar 13 09:30:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* bignum.c (bigfixize): zero length Bignum is 0.
+
 Fri Mar 13 08:06:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* util.c (rv_strdup): macro to duplicate nul-terminated string.
diff --git a/bignum.c b/bignum.c
index f508f71e02..3a317d0065 100644
--- a/bignum.c
+++ b/bignum.c
@@ -191,7 +191,8 @@ bigfixize(VALUE x)
     long len = RBIGNUM_LEN(x);
     BDIGIT *ds = BDIGITS(x);
 
-    if (len > 0 && len*SIZEOF_BDIGITS <= sizeof(long)) {
+    if (len == 0) return INT2FIX(0);
+    if (len*SIZEOF_BDIGITS <= sizeof(long)) {
 	long num = 0;
 #if 2*SIZEOF_BDIGITS > SIZEOF_LONG
 	num = (long)ds[0];