Re: [PATCH 2/2] MPI: Fix mpi_powm() when exponent is 0 and the result has no limbs

Thu, 24 Nov 2016 03:32:55 -0800 

2016-11-24 14:17 GMT+03:00 David Howells <[email protected]>:
> David Howells <[email protected]> wrote:
>
>> +             if (!rp) {
>> +                     if (mpi_resize(res, 1) < 0)
>
> This is better done with RESIZE_IF_NEEDED().
>

mpi_resize() is equal to RESIZE_IF_NEEDED(), it also checks for allocated space:

int mpi_resize(MPI a, unsigned nlimbs)
{
....
   if (nlimbs <= a->alloced)
    return 0; /* no need to do it */



> David

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