[issue37193] Memory leak while running TCP/UDPServer with socketserver.ThreadingMixIn

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

Commit c41559021213cfc9dc62a83fc63306b3bdc3e64b has introduced reference leaks:

----------------------------------------------------------------------
Ran 202 tests in 21.654s
OK (skipped=1)
......
test_logging leaked [20, 20, 20] references, sum=60
test_logging leaked [20, 20, 20] memory blocks, sum=60
2 tests failed again:
    test_logging test_socketserver
== Tests result: FAILURE then FAILURE ==

Example buildbot failure:

https://buildbot.python.org/all/#/builders/562/builds/79/steps/5/logs/stdio

As there is a release of 3.10 alpha 2 tomorrow I would be great if this could be fixed by tomorrow.

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nosy: +pablogsal

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<https://bugs.python.org/issue37193>
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