[PATCH] arm: fix memcpy and memmove for negative len [BZ #25620]

[Evgeny Eremin]

On Thu, Jun 04, 2020 at 11:16:16AM +0200, Florian Weimer wrote:

> Thanks for working on this.  Is this contribution covered by a copyright
> assignment to the FSF?  If not, would you be willing to file the
> required paperwork with the FSF?
>
>   <https://sourceware.org/glibc/wiki/Contribution%20checklist#FSF_copyright_Assignment>

Got OK from our legal department and started the assignment process
using [1].  (Please guide me if I need to fill some other form.)

> Do your changes fix string/tst-memmove-overflow for the baseline arm
> implementation?

Yes, sure.  We've payed additional attention to this particular case and
it XPASS-ed successfuly.  Performance tests we've performed also look good,
showing very similar timings comparing to unpatched code for different
buffer lengths.

[1] http://git.savannah.gnu.org/cgit/gnulib.git/plain/doc/Copyright/request-assign.future

-- 
Evgeny Eremin
Senior Software Engineer
Open Mobile Platform
https://omprussia.ru