Bug#1017033: scotch: autopkgtest regression on armel, armhf and ppc64el with glibc 2.34: output on stderr

[Paul Gevers]

Source: scotch
Version: 7.0.1-2
Severity: serious
User: debian-ci at lists.debian.org
Usertags: regression

Dear maintainer(s),

I looked at the results of the autopkgtest of you package because it was 
showing up as a regression for the upload of glibc [0] on armel, armhf 
and ppc64el. It seems that it fails due to *warnings* printed on stderr. 
autopkgtest by default fails on output to stderr, which can be changed 
by adding a "allow-stderr" restriction to the test. Obviously it's 
better to prevent the output. Ubuntu already added the restriction 
because they were seeing this before Debian.

Because the unstable-to-testing migration software now blocks on
regressions in testing, flaky tests, i.e. tests that flip between
passing and failing without changes to the list of installed packages,
are causing people unrelated to your package to spend time on these
tests.

Don't hesitate to reach out if you need help and some more information
from our infrastructure.

Paul

[0] 
https://ci.debian.net/data/autopkgtest/testing/armel/s/scotch/24593514/log.gz

autopkgtest [17:58:43]: test test-scotch:  - - - - - - - - - - stderr - 
- - - - - - - - -
test_scotch_graph_induce.c: In function ‘main’:
test_scotch_graph_induce.c:134:3: warning: ‘memset’ specified size 
between 2147483649 and 4294967295 exceeds maximum object size 2147483647 
[-Wstringop-overflow=]
   134 |   memset (orgparttab, 0, orgvertnbr * sizeof (SCOTCH_GraphPart2));
       |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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