bug#49509: libsigsegv fails to build on emulated aarch64 [core-updates]

["Ludovic Courtès" <ludo@gnu.org>]

Hello,

Maxime Devos <maximedevos@telenet.be> skribis:

> Ludovic Courtès schreef op zo 11-07-2021 om 00:19 [+0200]:
>> Hi,
>> 
>> Maxime Devos <maximedevos@telenet.be> skribis:
>> 
>> > FAIL: stackoverflow1
>> > ====================
>> > 
>> > qemu: uncaught target signal 11 (Segmentation fault) - core dumped
>> > FAIL stackoverflow1 (exit status: 139)
>> > 
>> > FAIL: stackoverflow2
>> > ====================
>> > 
>> > Starting recursion pass 1.
>> > Stack overflow 1 missed.
>> > FAIL stackoverflow2 (exit status: 1)
>> 
>> For now I worked around it by offloading this to a “real” machine
>> (overdrive1), where it builds fine.  I wonder if there’s much we can do
>> regarding QEMU’s behavior here.
>
> Maybe detect if QEMU is used, and if so, don't run the test suite?
> Not really a ‘clean’ solution though, w.r.t. reproducibility,
> and I wouldn't know how to detect this.

Yeah, I’d rather avoid that.

> If this is a bug in QEMU, then ideally that would be fixed in QEMU,
> but I wouldn't know where to look.

It could be that someone else on the intertubes stumbled upon that
issue, that’d be great.  It could be that libsigsegv plays tricks that
don’t fare well with QEMU’s expectations, as in
<https://bugzilla.redhat.com/show_bug.cgi?id=1493304#c5>.  We should ask
on bug-libsigsegv@gnu.org.

Thanks,
Ludo’.