From 73549c501f9ebb741732b91d0ccdc255e6960a3b Mon Sep 17 00:00:00 2001
From: shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 16 Nov 2018 03:34:53 +0000
Subject: [PATCH] bignum.c: fix bug in big2dbl()

I was wrong at r65753.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65755 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 bignum.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bignum.c b/bignum.c
index 8497ae27ee..b3046f2017 100644
--- a/bignum.c
+++ b/bignum.c
@@ -5283,7 +5283,8 @@ big2dbl(VALUE x)
                     mask <<= bits;
                     bit <<= bits;
                     dl &= mask;
-                    dl |= bit;
+                    dl += bit;
+                    dl = BIGLO(dl);
 		    if (!dl) d += 1;
 		}
 	    }