Optimization flags lead to not working loader.efi

[Harald Schmalzbauer]

 Bezüglich Dominik Zajac's Nachricht vom 08.01.2015 19:30 (localtime):
> Hi,
>
> while testing on my workstation I had some optimizations flags in
> place while I did buildword of 10-STABLE.
>
> The system failed to boot because of a not working loader.efi
> I replaced the loader.efi with the one from the STABLE snapshot media
> and the sytem loaded up correctly and worked as I could see.
>
> To verify I removed all custom flags from my make.conf and rebuilt
> world again which leads to a fully working system again.
>
> Not sure if its a real bug or needs some more investigation.

This would really need more investigation, it's been discussed some time
ago here:
https://lists.freebsd.org/pipermail/freebsd-current/2014-September/052345.html

But there are other oddities with core-avx2 optimization, like discussed
here:
https://lists.freebsd.org/pipermail/freebsd-stable/2014-December/081382.html

Unfortunately I don't have enough compiler knowledge, nor even enough
time at the moment to do anything helpful, just link to answers I'll
track as soon as possible:
https://lists.freebsd.org/pipermail/freebsd-current/2014-September/052354.html
Bug Report:
https://lists.freebsd.org/pipermail/freebsd-current/2014-November/053110.html

-Harry

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 196 bytes
Desc: OpenPGP digital signature
URL: <http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20150109/6275f107/attachment.sig>