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 <s...@mariadb.org> 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 secur...@mariadb.org > -- Yours truly, Nikita Malyavin
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