On Fri, 2020-07-24 at 17:44 +0200, Fabio Valentini wrote:
> On Fri, Jul 24, 2020 at 5:11 PM Jeff Law <l...@redhat.com> wrote:
> > > One error I've seen in libreoffice is a gcc / annobin segfault:
> > > 
> > > [build CXX] vcl/unx/gtk3/gtk3gtkinst.cxx
> > > *** WARNING *** there are active plugins, do not report this as a bug
> > > unless you can reproduce it without enabling any plugins.
> > > Event                            | Plugins
> > > PLUGIN_FINISH_UNIT               | annobin: Generate final annotations
> > > PLUGIN_START_UNIT                | annobin: Generate global annotations
> > > PLUGIN_ALL_PASSES_START          | annobin: Generate per-function 
> > > annotations
> > > PLUGIN_ALL_PASSES_END            | annobin: Register per-function end 
> > > symbol
> > > /builddir/build/BUILD/libreoffice-6.4.5.2/vcl/workben/vcldemo.cxx: In
> > > destructor 'virtual DemoWin::RenderThread::~RenderThread()':
> > > /builddir/build/BUILD/libreoffice-6.4.5.2/vcl/workben/vcldemo.cxx:1733:18:
> > > internal compiler error: Segmentation fault
> > >  1733 |             join();
> > This sounds like a compiler bug.  Can you try adding
> > "%define _lto_cflags %{nil}"
> > 
> > To the .spec file and see if that gets you over the hump?  I've seen one 
> > failure
> > of this nature in my LTO testing and haven't gotten around to producing a
> > bugreport suitable for upstream (but the affected package has LTO disabled 
> > to
> > keep it from failing its builds).  My tester reports that it's never got a 
> > clean
> > control build of libreoffice, so I've never dug into it for any LTO specific
> > failures.
> 
> I added this %define _lto_cflags %{nil} to the top of the libreoffice
> .spec file, and compiled it in mock locally.
> And it spits out the same GCC crash error message without LTO.
THanks for checking.  That'll make things easier ;-)

Add -save-temps to the compile line and also build with V=1 so you can get the
full command line.  Pass along the .ii file and that full command line and I'll
take a peek at what's going on inside GCC.

jeff
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