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

Andrey Ryabinin
2016-11-24T11:32:20Z

2016-11-24 14:17 GMT+03:00 David Howells <dhowells@redhat.com>:
> David Howells <dhowells@redhat.com> 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