Bug#956324: Clustalo bus error on mipsel (Was: Bug#956324: python-biopython: FTBFS on mipsel)

On Sun, May 10, 2020 at 08:56:50PM +0200, Andreas Tille wrote:
>...
> On Sun, May 10, 2020 at 11:19:27AM +0300, Adrian Bunk wrote:
> > What does fix the problem is disabling OpenMP.
> > I suspect OpenMP is somehow broken in gcc >= 8 on mipsel.
> 
> I wonder how we could keep this finding to other packages.  I bet it
> would not the only issue but it has shown up due to intense testing.
>...
> I've now uploaded now with this patch closing the bug - but as I tried to
> express I'd sleep a bit better if this issue would be recorded somewhere
> else than in a closed bug.

A bug buried somewhere in the Debian bts would not change anything.

What would have to happen would be a Debian MIPS porter debugging
this problem and then submitting a minimal testcase to gcc upstream.

Assuming this will be confirmed to be a mipsel-specific gcc bug,
this looks likely but it is still possible that there actually
is a bug in clustalo that works by chance on other architectures.
Unlikely, but not impossible.

In a more positive note, I assume people would have already noticed if 
OpenMP on mipsel in stable and unstable would be completely broken.

> Thanks again for your research
> 
>     Andreas.

cu
Adrian