[arch-general] [arch-dev-public] Test repository with gcc7

[Jan Alexander Steffens]

On Tue, May 23, 2017 at 9:42 PM Eli Schwartz via arch-general <
arch-general at archlinux.org> wrote:

> On 05/15/2017 07:33 AM, Bartłomiej Piotrowski wrote:
> > I will push new gcc to [testing] this week.
>
> Terrible things happened to my firefox and thunderbird-gtk2 builds when
> I used what turned out to be a testing-enabled build chroot to build them.
>
> The builds succeeded but the UI elements blinked in and out constantly
> and it was uncooperative switching tabs... basically everything fritzed.
> No idea why... but disabling testing and `pacman -Syuu` allowed the
> rebuilds to work as expected.
>
> Quickly googling gets me this, which looks like the same issue:
> https://bugzilla.redhat.com/show_bug.cgi?id=1422532


No, this particular bug should have been fixed since 52.0...

In any case, you can try CXXFLAGS+=" -fno-lifetime-dse
-fno-delete-null-pointer-checks -fno-schedule-insns2" ; these were the
optimization steps that used to cause trouble with GCC 6.