Bug#1143816: faiss: autopkgtest needs update for new version of gcc-defaults: test SEGFAULTs

Paul Gevers <[email protected]> Thu, 6 Aug 2026 17:28:22 +0200
Newsgroups	gmane.linux.debian.devel.bugs.rc
Message-ID	<[email protected]>
Source: faiss
Version: 1.13.2-1
Severity: serious
X-Debbugs-CC: [email protected] [email protected]
Tags: sid forky
User: [email protected]
Usertags: needs-update
Control: affects -1 src:gcc-defaults
User: [email protected]
Usertags: riscv64

Dear maintainer(s),

With a recent upload of gcc-defaults the autopkgtest of faiss fails in 
testing when that autopkgtest is run with the binary packages of 
gcc-defaults from unstable. It passes when run with only packages from 
testing. In tabular form:

                        pass            fail
gcc-defaults           from testing    1.233
faiss                  from testing    1.13.2-1
all others             from testing    from testing

I copied some of the output at the bottom of this report.

Currently this regression is blocking the migration of gcc-defaults to 
testing [1]. Of course, gcc-defaults shouldn't just break your 
autopkgtest (or even worse, your package), but it seems to me that the 
change in gcc-defaults was intended and your package needs to update to 
the new situation.

If this is a real problem in your package (and not only in your 
autopkgtest), the right binary package(s) from gcc-defaults should 
really add a versioned Breaks on the unfixed version of (one of your) 
package(s). Note: the Breaks is nice even if the issue is only in the 
autopkgtest as it helps the migration software to figure out the right 
versions to combine in the tests.

More information about this bug and the reason for filing it can be found on
https://wiki.debian.org/ContinuousIntegration/RegressionEmailInformation

Paul

[1] https://qa.debian.org/excuses.php?package=gcc-defaults

https://ci.debian.net/data/autopkgtest/testing/riscv64/f/faiss/74133117/log.gz

7572s test 119
7572s         Start 119: HNSWTest.TEST_search_from_candidate_unbounded
7572s 7572s 119: Test command: 
/tmp/autopkgtest.Eu4j7u/autopkgtest_tmp/tests/build/faiss_test 
"--gtest_filter=HNSWTest.TEST_search_from_candidate_unbounded" 
"--gtest_also_run_disabled_tests"
7572s 119: Working Directory: 
/tmp/autopkgtest.Eu4j7u/autopkgtest_tmp/tests/build
7572s 119: Test timeout computed to be: 10000000
7572s 119: WARNING clustering 1000 points to 40 centroids: please 
provide at least 1560 training points
7572s 119: Running main() from ./googletest/src/gtest_main.cc
7572s 119: Note: Google Test filter = 
HNSWTest.TEST_search_from_candidate_unbounded
7572s 119: [==========] Running 1 test from 1 test suite.
7572s 119: [----------] Global test environment set-up.
7572s 119: [----------] 1 test from HNSWTest
7572s 119: [ RUN      ] HNSWTest.TEST_search_from_candidate_unbounded
7572s 119/133 Test #119: HNSWTest.TEST_search_from_candidate_unbounded 
.....................***Exception: SegFault  0.14 sec


7577s 7577s 99% tests passed, 1 tests failed out of 133
7577s 7577s Total Test time (real) = 444.00 sec
7577s 7577s The following tests FAILED:
7577s 	119 - HNSWTest.TEST_search_from_candidate_unbounded (SEGFAULT)
7577s Errors while running CTest
OpenPGP_signature.asc (application/pgp-signature, 585 B)