https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91766
Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |wilco at gcc dot gnu.org
--- Comment #7 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #6)
> (In reply to Wilco from comment #4)
> > (In reply to martin krastev from comment #3)
> > > So it appears to be a clash between -fcommon and -fvisibility=hidden
> > > during
> > > -fpic -- passing either -fno-common or -fno-pic drops the GOT indirection.
> > > And explicitly hiding the symbol obviously solves it. But the crux of the
> > > issue, IMO, is a multi-platform one -- that behavior deviates on gcc-8.2
> > > from platform to platform. On amd64 it suffices to -fvisibility=hidden to
> > > stop GOT detours, whereas on aarch64 it's -fvisibility=hidden -fno-common.
> > > As a result aarch64 performance gets penalized in unsuspecting
> > > multi-plats.
> >
> > -fno-common should really become the default, -fcommon causes way too many
> > issues.
>
> That's bug 85678
Yes, we need to push on that one again since not much happened...
