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Handle BN_copy failure after successful BN_new.

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This commit is contained in:
Bodo Möller 2000-11-07 09:39:51 +00:00
parent 58f0f52e67
commit e0bf5c11ea
1 changed files with 8 additions and 4 deletions
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12
crypto/bn/bn_lib.c
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@ -507,15 +507,19 @@ BIGNUM *bn_expand2(BIGNUM *b, int words)
BIGNUM *BN_dup(const BIGNUM *a) BIGNUM *BN_dup(const BIGNUM *a)
{ {
BIGNUM *r; BIGNUM *r, *t;
if (a == NULL) return NULL; if (a == NULL) return NULL;
bn_check_top(a); bn_check_top(a);
r=BN_new(); t = BN_new();
if (r == NULL) return(NULL); if (t == NULL) return(NULL);
return((BIGNUM *)BN_copy(r,a)); r = BN_copy(t, a);
/* now r == t || r == NULL */
if (r == NULL)
BN_free(t);
return r;
} }
BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b) BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)