[Debian-astro-maintainers] Bug#1094102: giza: FTBFS: make[6]: *** [Makefile:921: test-suite.log] Error 1

[Ole Streicher]

Hi Santiago,

Am 02.02.25 um 13:45 schrieb Santiago Vila:
> This package FTBFS 70% of the time for me when I try to build it on
> a single-CPU machine.
> 
> Please try GRUB_CMDLINE_LINUX="nr_cpus=1" or contact me privately if
> you need a VM to reproduce it.

I tried this on my laptop (AMD Ryzen 7; /proc/cpuinfo copy attached) six
times without any failure.

> In this case I see this in the build log:
> 
> ../../build/test-driver: line 112: 254916 Segmentation fault
> "$@"
>>> "$log_file" 2>&1
> 
> which means we rely on a program which segfaults to determine if
> the package is ok or not. In my opinion a test which segfaults is
> not to be trusted and we might better disable it.

Not sure I understand this. As I said, I also cannot reproduce the issue 
on my laptop. And I think that for a graphics lib (which giza is), "open 
a window, draw something and see that we exit correctly" is not a 
perfect, but still useful automated test.

> Apparently this worked ok in 1.4.1-2 and started to fail in version 1.4.4-1.
> So, I suspect of this change as the trigger:
> 
> * Run tests in xvfb

xvfb-run executes the command in an X11 environment, which is now 
required as many tests open an X11 window. These tests were omitted in 
earlier versions by upstream, but are now enabled by default and think 
that they are useful as build time tests.

Could I ask you (or someone who also observes this issue) to create a 
coredump for the segfault and send it to me? Then I can analyze where 
this comes from.

Best

Ole
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