[poky] [PATCH A or B] Fix for bug #853 - matchbox-panel segfaults, X becomes unusable

[Yu Ke]

On Mar 17, 00:13, Richard Purdie wrote:
> On Wed, 2011-03-16 at 14:47 -0700, Darren Hart wrote:
> > The root cause of the matchbox-panel segfault is the same as for the 
> > previous two bugs addressing the same issue:
> > 
> > o Bug 224 - [Netbook/emenlow] matchbox-panel segfault after X startup
> > o Bug 738 - matchbox-panel segfault after X startup
> > 
> > There apparently is a bug in gcc which results in the omission of some 
> > code leading to the segfault on core2. The following flags resolve the 
> > problem.
> > 
> > FULL_OPTIMIZATION = "-fexpensive-optimizations -frename-registers -O2 
> > -ggdb -feliminate-unused-debug-types"
> > 
> > We can continue to patch each new machine's gtk+ recipe that is based on 
> > atom-pc.conf, or we can just add the above to tune-atom.conf. I've 
> > tested both on both the n450 and a Toshiba NB305 netbook, and each 
> > solution is effective.
> > 
> > Chaging it in tune-atom.conf likely fixes other bugs we either haven't 
> > solved yet or simply haven't hit. It is also much more invasive, and we 
> > may not be willing to accept that this close to 1.0. The patches follow, 
> > and we can include one or the other.
> > 
> > Preferences?
> 
> I'm in favour of C which is to add this to tune-atom.inc:
> 
> FULL_OPTIMIZATION_pn-gtk+ = "-fexpensive-optimizations -frename-registers -O2 -ggdb -feliminate-unused-debug-types"
> 
> :)
> 
> Cheers,
> 
> Richard

I have an option D :)

i.e. in gtk+_2.22.1.bb, add:
FULL_OPTIMIZATION_core2= "-fexpensive-optimizations -frename-registers -O2 -ggdb -feliminate-unused-debug-types"

because this issue is caused by gcc optimization for core2 arch, so in theory, all machine with core2 arch setting will be affected, no only limited to atom machine

Regards
Ke