diff options
| author | Bodo Möller <bodo@openssl.org> | 2005-08-23 04:14:40 +0000 |
|---|---|---|
| committer | Bodo Möller <bodo@openssl.org> | 2005-08-23 04:14:40 +0000 |
| commit | 7534d131d676431f1299618dfe0decd1a42680bb (patch) | |
| tree | 376f15f3b85798158dcb98aa07ae1390c5f57349 /crypto/bn/bn_sqrt.c | |
| parent | 7f3c9036ea1be59c07ab85624d53d6e244dbe851 (diff) | |
avoid potential spurious BN_free()
Submitted by: David Heine <dlheine@suif.Stanford.EDU>
Diffstat (limited to 'crypto/bn/bn_sqrt.c')
| -rw-r--r-- | crypto/bn/bn_sqrt.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/crypto/bn/bn_sqrt.c b/crypto/bn/bn_sqrt.c index c1eb7f6d49..6beaf9e5e5 100644 --- a/crypto/bn/bn_sqrt.c +++ b/crypto/bn/bn_sqrt.c @@ -83,7 +83,8 @@ BIGNUM *BN_mod_sqrt(BIGNUM *in, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx) goto end; if (!BN_set_word(ret, BN_is_bit_set(a, 0))) { - BN_free(ret); + if (ret != in) + BN_free(ret); return NULL; } bn_check_top(ret); @@ -102,7 +103,8 @@ BIGNUM *BN_mod_sqrt(BIGNUM *in, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx) goto end; if (!BN_set_word(ret, BN_is_one(a))) { - BN_free(ret); + if (ret != in) + BN_free(ret); return NULL; } bn_check_top(ret); |