Commit 93a8b3ba authored by Bernd Edlinger's avatar Bernd Edlinger Committed by Andy Polyakov
Browse files

Remove a pointless "#if 0" block from BN_mul. 



Reviewed-by: default avatarAndy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3683)
parent 64119271

crypto/bn/bn_mul.c

+0 −40
Original line number Diff line number Diff line
@@ -587,46 +587,6 @@ int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) 
            rr->top = top;

            goto end;

        }

# if 0

        if (i == 1 && !BN_get_flags(b, BN_FLG_STATIC_DATA)) {

            BIGNUM *tmp_bn = (BIGNUM *)b;

            if (bn_wexpand(tmp_bn, al) == NULL)

                goto err;

            tmp_bn->d[bl] = 0;

            bl++;

            i--;

        } else if (i == -1 && !BN_get_flags(a, BN_FLG_STATIC_DATA)) {

            BIGNUM *tmp_bn = (BIGNUM *)a;

            if (bn_wexpand(tmp_bn, bl) == NULL)

                goto err;

            tmp_bn->d[al] = 0;

            al++;

            i++;

        }

        if (i == 0) {

            /* symmetric and > 4 */

            /* 16 or larger */

            j = BN_num_bits_word((BN_ULONG)al);

            j = 1 << (j - 1);

            k = j + j;

            t = BN_CTX_get(ctx);

            if (al == j) {      /* exact multiple */

                if (bn_wexpand(t, k * 2) == NULL)

                    goto err;

                if (bn_wexpand(rr, k * 2) == NULL)

                    goto err;

                bn_mul_recursive(rr->d, a->d, b->d, al, t->d);

            } else {

                if (bn_wexpand(t, k * 4) == NULL)

                    goto err;

                if (bn_wexpand(rr, k * 4) == NULL)

                    goto err;

                bn_mul_part_recursive(rr->d, a->d, b->d, al - j, j, t->d);

            }

            rr->top = top;

            goto end;

        }

# endif

    }

#endif                          /* BN_RECURSION */

    if (bn_wexpand(rr, top) == NULL)