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Bug#919197: Acknowledgement (qtwayland-opensource-src: FTBFS on hppa - Segmentation faults in testsuite)



On 2019-01-14 12:42 p.m., Dmitry Shachnev wrote:
>> hy are we building with gcc-7?
> The latest hppa build log [1] has gcc 8.2.0.
>
> [1]: https://buildd.debian.org/status/fetch.php?pkg=qtwayland-opensource-src&arch=hppa&ver=5.11.3-2&stamp=1547325647
I was referring to mesa.  It appears to be miscompiled on hppa and
causes the FTBFS.  18.2.8-2 was built with gcc-7.  The new 18.3.0-1
on experimental in now built with gcc-8.  I did a test build of mesa
with gcc-8:
https://buildd.debian.org/status/fetch.php?pkg=mesa&arch=hppa&ver=18.2.8-2%2Bb1&stamp=1547428024&raw=0
However, it has same code issue

At this point, I think the problem is with gcc.  Either the instruction
after the movb should have been nullified, or
it shouldn't have been put in the delay slot of the movb.

I need a build outside buildd to investigation further.  I haven't
looked at the code for dri2_query_wayland_buffer_wl
(i.e., what happens when wayland_drm_buffer_get() returns NULL).

Dave

-- 
John David Anglin  dave.anglin@bell.net


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