Fix failure to check result of bn_rshift_fixed_top
Fixes
@@ -446,8 +446,10 @@ int bn_div_fixed_top(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num,
snum->neg = num_neg;
snum->top = div_n;
snum->flags |= BN_FLG_FIXED_TOP;
- if (rm != NULL)
- bn_rshift_fixed_top(rm, snum, norm_shift);
+
+ if (rm != NULL && bn_rshift_fixed_top(rm, snum, norm_shift) == 0)
+ goto err;
+
BN_CTX_end(ctx);
return 1;
err:
