gh-140824: Fix _Py_DumpExtensionModules() to ignore sub-modules

[vstinner]

Ignore "math.integer" extension if "math" is in
sys.stdlib_module_names.

• Issue: Make the math module an extension package #140824

[vstinner]

@StanFromIreland: I updated my PR to address your review. Please review the updated PR.

[StanFromIreland]

Thanks Victor, LGTM

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x Fedora Stable Refleaks 3.x (tier-3) has failed when building commit 2aea861.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1641/builds/1641) and take a look at the build logs.
4. Check if the failure is related to this commit (2aea861) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1641/builds/1641

Failed tests:

• test_profiling

Failed subtests:

• test_timerfd_initval - test.test_os.test_os.TimerfdTests.test_timerfd_initval

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/test/test_profiling/test_sampling_profiler/test_live_collector_ui.py", line 884, in test_run_failed_script_live
    main()
    ~~~~^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/cli.py", line 788, in main
    _main()
    ~~~~~^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/cli.py", line 922, in _main
    handler(args)
    ~~~~~~~^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/cli.py", line 999, in _handle_run
    _handle_live_run(args)
    ~~~~~~~~~~~~~~~~^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/cli.py", line 1133, in _handle_live_run
    sample_live(
    ~~~~~~~~~~~^
        process.pid,
        ^^^^^^^^^^^^
    ...<9 lines>...
        blocking=args.blocking,
        ^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/sample.py", line 487, in sample_live
    profiler = SampleProfiler(
        pid,
    ...<8 lines>...
        blocking=blocking,
    )
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/sample.py", line 61, in __init__
    raise SystemExit(err) from err
SystemExit: Failed to find the PyRuntime section in process 39555 on Linux platform


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/sample.py", line 59, in __init__
    self.unwinder = self._new_unwinder(native, gc, opcodes, skip_non_matching_threads)
                    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/sample.py", line 74, in _new_unwinder
    return _remote_debugging.RemoteUnwinder(
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        self.pid,
        ^^^^^^^^^
    ...<7 lines>...
        **kwargs
        ^^^^^^^^
    )
    ^
RuntimeError: Failed to find the PyRuntime section in process 49965 on Linux platform


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/test/test_os/test_os.py", line 3980, in test_timerfd_initval
    self.assertAlmostEqual(next_expiration, initial_expiration, places=self.CLOCK_RES_PLACES)
    ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: 0.23832781800000002 != 0.25 within 2 places (0.011672181999999975 difference)


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/sample.py", line 59, in __init__
    self.unwinder = self._new_unwinder(native, gc, opcodes, skip_non_matching_threads)
                    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/sample.py", line 74, in _new_unwinder
    return _remote_debugging.RemoteUnwinder(
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        self.pid,
        ^^^^^^^^^
    ...<7 lines>...
        **kwargs
        ^^^^^^^^
    )
    ^
RuntimeError: Failed to find the PyRuntime section in process 39555 on Linux platform


Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/test/test_profiling/test_sampling_profiler/test_live_collector_ui.py", line 884, in test_run_failed_script_live
    main()
    ~~~~^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/cli.py", line 788, in main
    _main()
    ~~~~~^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/cli.py", line 922, in _main
    handler(args)
    ~~~~~~~^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/cli.py", line 999, in _handle_run
    _handle_live_run(args)
    ~~~~~~~~~~~~~~~~^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/cli.py", line 1133, in _handle_live_run
    sample_live(
    ~~~~~~~~~~~^
        process.pid,
        ^^^^^^^^^^^^
    ...<9 lines>...
        blocking=args.blocking,
        ^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/sample.py", line 487, in sample_live
    profiler = SampleProfiler(
        pid,
    ...<8 lines>...
        blocking=blocking,
    )
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-s390x.refleak/build/Lib/profiling/sampling/sample.py", line 61, in __init__
    raise SystemExit(err) from err
SystemExit: Failed to find the PyRuntime section in process 49965 on Linux platform