PSPP-BUG: [bug #61785] Regression: Strange unstable behaviour of perl memory test on debian sid amd64 on buildbot

[Friedrich Beckmann]

URL:
  <https://savannah.gnu.org/bugs/?61785>

                 Summary: Regression: Strange unstable behaviour of perl
memory test on debian sid amd64 on buildbot
                 Project: PSPP
            Submitted by: beckmanf
            Submitted on: Mon 10 Jan 2022 09:50:52 AM UTC
                Category: Output Driver
                Severity: 3 - Ordinary
                  Status: None
             Assigned to: None
             Open/Closed: Open
                 Release: None
         Discussion Lock: Any
                  Effort: 0.00

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Details:

Hi Ben,

i noticed a strange behaviour in the regression with the perl module. I
recently added the perl libmemory usage module to the debian sid regression in
order to have more perl regression tests not being skipped. Now test 1512
fails but only sometimes

https://caeis.etech.fh-augsburg.de/buildbot/#/builders/6/builds/419


## ---------------------- ##
## Detailed failed tests. ##
## ---------------------- ##

#                             -*- compilation -*-
1512. perl-module.at:675: testing Perl Pspp.t ...
../../pspp/tests/perl-module.at:679: perl -MText::Diff -e '' || exit 77
../../pspp/tests/perl-module.at:681: perl -MMemory::Usage -e '' || exit 77
../../pspp/tests/perl-module.at:685: run_perl_module
"$abs_top_builddir/perl-module/t/Pspp.t"
stderr:
# 
# @@ -0,0 +1 @@
# +
# @@ -0,0 +1 @@
# +
# @@ -0,0 +1 @@
# +
# @@ -0,0 +1 @@
# +
# @@ -0,0 +1 @@
# +
#   Failed test 'Memory management of append_case'
#   at /home/pspp/build/perl-module/t/Pspp.t line 670.
# Looks like you failed 1 test of 38.
--- -   2022-01-10 03:28:27.515804362 +0000
+++ /home/pspp/build/tests/testsuite.dir/at-groups/1512/stdout  2022-01-10
03:28:27.509927156 +0000
@@ -37,5 +37,5 @@
 ok 35 - Missing Value Positive Num
 ok 36 - Custom Attributes
 ok 37 - Case count
-ok 38 - Memory management of append_case
+not ok 38 - Memory management of append_case
 
../../pspp/tests/perl-module.at:685: exit code was 1, expected 0
1512. perl-module.at:675: 1512. Perl Pspp.t (perl-module.at:675): FAILED
(perl-module.at:685)


Build 406 and build 419 failed, but all the other builds succeeded. Debian sid
does nightly builds:

https://caeis.etech.fh-augsburg.de/buildbot/#/console

Do you have any idea how a kind of race condition could happen in this
particular test? This could also be a bug in the perl module as this runs in
the debian unstable distribution. I have not included that perl module in
opensuse so there this test is skipped and wincross does not run a
regression.






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