From c2cfc956e5ef2de480cded493b88926c7f29be18 Mon Sep 17 00:00:00 2001
From: Andy Polyakov <appro@openssl.org>
Date: Mon, 9 Feb 2015 15:54:58 +0100
Subject: [PATCH] bn/bn_add.c: fix dead code elimination that went bad.

Reviewed-by: Matt Caswell <matt@openssl.org>
---
 crypto/bn/bn_add.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/bn/bn_add.c b/crypto/bn/bn_add.c
index e09451d88b..57e1cdac16 100644
--- a/crypto/bn/bn_add.c
+++ b/crypto/bn/bn_add.c
@@ -222,7 +222,7 @@ int BN_usub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b)
                 break;
         }
     }
-    memcpy(rp, ap, sizeof(*rp) * (max - i));
+    memcpy(rp, ap, sizeof(*rp) * dif);
 
     r->top = max;
     r->neg = 0;
-- 
2.40.0