maria-developers team mailing list archive

[Nikita Malyavin <nikitamalyavin@xxxxxxxxx>]

It is used in innodb's implementation of handler::position, to copy the key
from the record buffer, which is also used to be record[0]

On Tue, 17 Dec 2019 at 01:20, Sergei Golubchik <serg@xxxxxxxxxxx> wrote:

> Hi, Nikita!
>
> On Dec 06, Nikita Malyavin wrote:
> > Hi Sergei!
> >
> > I traced out the problem I faced with refs comparison -- It's in
> > key_copy implementation, which uses field->get_key_image, which in
> > turn copied data to the buffer passed, but from `field->ptr`. The
> > latter is important -- it means, current key_copy implementation
> > always copies data from table->record[0].
>
> I see. It looks like so far all usages of key_copy() used record[0]
> indeed.
>
> But as far as I can see, you're also using key_copy() with record[0],
> so why would you need that fix?
>
> Regards,
> Sergei
> VP of MariaDB Server Engineering
> and security@xxxxxxxxxxx
>


-- 
Yours truly,
Nikita Malyavin