[Bug regression/50999] [4.7 Regression]: g++.dg/lto/20081109 execute -O2 -flto -flto-partition=1to1 -fno-use-linker-plugin

["rguenther at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50999

--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> 2011-11-08 09:29:08 UTC ---
On Mon, 7 Nov 2011, hp at gcc dot gnu.org wrote:

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50999
> 
> --- Comment #3 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2011-11-07 21:24:59 UTC ---
> (In reply to comment #2)
> > Created attachment 25734 [details]
> > proposed patch
> > 
> > Hm, on x86_64 the EH table is not empty (look at g++.dg/lto/20081109_1.C,
> > the usual symtom is that the LTOed unit for that file does not contain
> > info to unwind from the throw - can you confirm that?).  The key is that
> > lto_init_eh() has to be called for that unit - previously we saved
> > flag_exceptions but now we only save explicit -fexceptions (thus, you
> > can verify if explicitly adding that option to the compile command line
> > fixes the issue).
> > 
> > Does the attached patch help?  It tries to start to address the (yet unsolved)
> > issue of preserving lang-dependent options.
> 
> I'll throw this patch to a test session - but I thought you mentioned you have
> access to powerpc-linux, wouldn't it be more productive for you to debug there?

;)

Trying to optimize my spare cycles ... when I have to resort to a ppc
machine I have to setup a new devel environment everytime ...

Richard.