[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Brett Cannon]

Change by Brett Cannon :


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nosy: +brett.cannon

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Zachary Ware]

Zachary Ware  added the comment:

BTW, we do have an Alpine buildbot worker in the unstable set, running only on 
the `main` branch: https://buildbot.python.org/all/#/workers/19

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nosy: +zach.ware

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Christian Heimes]

Christian Heimes  added the comment:

The comment about sched_[gs]etscheduler seems to be outdated. For one CPython's 
test suite has a @requires_sched decorator that performs a check for 
sched_getscheduler and the Kernel syscall. musl libc in Alpine 3.13 and 3.15 
have sched_setscheduler.

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Christian Heimes]

Christian Heimes  added the comment:

In my opinion we should treat these issues as Alpine / musl libc platform bugs 
and ask the Alpine maintainers to look into the issue. The tests are passing on 
Linux with glibc and BSD platforms (FreeBSD, macOS, ...) with BSD libc. It is 
reasonable to assume that failing test are caused by incompatibilities or 
deficiencies in musl libc, or by a different interpretation of POSIX and Open 
Group standards.

I would not ignore or skip any test unless we have a thorough understanding of 
the problem and the deviation is documented. The issue can also affect user 
code.

Python's test suite is exhaustive. Our tests have found a fair amount of 
problems in e.g, libm. A couple of years ago ine of my AF_ALG socket tests even 
found a Kernel bug by triggered a Kernel fault.

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Christian Heimes]

Change by Christian Heimes :


Removed file: https://bugs.python.org/file50562/alpine315-tests.txt

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Terry J. Reedy]

Terry J. Reedy  added the comment:

The first alpine315-tests.txt appears to be a truncated version of the second.  
Were you expecting the first to be automatically replaced?  Should it be 
unlinked?

https://www.alpinelinux.org "Alpine Linux is a security-oriented, lightweight 
Linux distribution based on musl libc and busybox."  Fron the doc linked above:

# Maintainer: Natanael Copa   ## I nosied Natanael at 
his CLA-signed Alpine id.
# Contributor: Sheila Aman 
...
# musl related
fail="test__locale test_locale test_strptime test_re"   # various musl 
locale deficiencies
fail="$fail test_c_locale_coercion"
fail="$fail test_datetime"  # hangs if 
'tzdata' installed
fail="$fail test_os"# fpathconf, 
ttyname errno values
fail="$fail test_posix" # 
sched_[gs]etscheduler not impl
fail="$fail test_shutil"# lchmod, 
requires real unzip

Should we change CPython tests to accommodate things that are missing (versus 
buggy).  Should the tests requiring sched_[gs]etscheduler be skipped if 
missing?  Or are they required to be 'posix' and is test_posix meant to test 
completeness as well as correctness of what is present?

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nosy: +ncopa, terry.reedy

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Kumar Aditya]

Change by Kumar Aditya :


--
nosy:  -kumaraditya303

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Christian Heimes]

Christian Heimes  added the comment:

I would put it differently: The package maintainer of Python on Alpine decided 
to ignore all test failures in these test modules.

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Kumar Aditya]

Kumar Aditya  added the comment:

These tests seems to be expected to fail on alpine.

See 
https://github.com/alpinelinux/aports/blob/b36ed9bba2fdbf49a98dfdc3377c29271525082f/main/python3/APKBUILD#L123

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nosy: +kumaraditya303

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Christian Heimes]

Change by Christian Heimes :


Added file: https://bugs.python.org/file50566/alpine315-tests.txt

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[issue46390] Multiple test failures on Alpine 3.15 / musl-1.2.2-r7

[Christian Heimes]

New submission from Christian Heimes :

I'm getting multiple test failures with latest Alpine 3.15 and musl-1.2.2-r7. 
Some test failures may be caused by wrong assumptions in our tests, some might 
be bugs in musl lib.c

9 tests failed:
test__locale test_c_locale_coercion test_cmd_line test_gdb
test_locale test_os test_posix test_re test_selectors

I have attached the output of

./python -m test -v test__locale test_c_locale_coercion test_cmd_line test_gdb 
test_locale test_os test_posix test_re test_selectors 2>&1 | tee 
alpine315-tests.txt

You can use my container to reproduce the test failures:

$ podman run --privileged -ti --rm -v $(pwd):/cpython:Z 
quay.io/tiran/cpythonbuild:alpine-3.15 /bin/sh
# /cmd.sh
# cd /cpython/builddep/alpine-3.15-x86_64/
# make test

--
components: Build, Tests
files: alpine315-tests.txt
messages: 410645
nosy: christian.heimes
priority: normal
severity: normal
status: open
title: Multiple test failures on Alpine 3.15 / musl-1.2.2-r7
type: behavior
versions: Python 3.11
Added file: https://bugs.python.org/file50562/alpine315-tests.txt

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