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authorPaul Yang <paulyang.inf@gmail.com>2017-06-22 18:52:29 +0800
committerBernd Edlinger <bernd.edlinger@hotmail.de>2017-06-26 15:40:16 +0200
commitedea42c602854c902b7909a150cd2412d7b8f215 (patch)
treeb0e97a08a199df553af3dd0f6144dda7d77538e5 /crypto/bn/bn_recp.c
parent9e1d5e8dff693cb2b658f66db4f10709d8364690 (diff)
Change to check last return value of BN_CTX_get
To make it consistent in the code base Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> (Merged from https://github.com/openssl/openssl/pull/3749)
Diffstat (limited to 'crypto/bn/bn_recp.c')
-rw-r--r--crypto/bn/bn_recp.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/crypto/bn/bn_recp.c b/crypto/bn/bn_recp.c
index 20585b9d4b..80bfa2d38b 100644
--- a/crypto/bn/bn_recp.c
+++ b/crypto/bn/bn_recp.c
@@ -1,5 +1,5 @@
/*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@@ -87,17 +87,11 @@ int BN_div_recp(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m,
BIGNUM *a, *b, *d, *r;
BN_CTX_start(ctx);
+ d = (dv != NULL) ? dv : BN_CTX_get(ctx);
+ r = (rem != NULL) ? rem : BN_CTX_get(ctx);
a = BN_CTX_get(ctx);
b = BN_CTX_get(ctx);
- if (dv != NULL)
- d = dv;
- else
- d = BN_CTX_get(ctx);
- if (rem != NULL)
- r = rem;
- else
- r = BN_CTX_get(ctx);
- if (a == NULL || b == NULL || d == NULL || r == NULL)
+ if (b == NULL)
goto err;
if (BN_ucmp(m, &(recp->N)) < 0) {