[issue39042] Use the runtime's main thread ID in the threading module.

[Eric Snow]

Eric Snow <ericsnowcurrently at gmail.com> added the comment:

I don't see a reason not to consider this is a regression.

The only problem with the fix would be for any users that rely on the inaccurate reporting of the threading module.  Considering that possibly includes only some embedders (and folks using _thread module directly), I expect the impact would be extremely small.  A porting entry in the whats-new doc.

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keywords: +3.8regression
priority: normal -> release blocker
stage: test needed -> needs patch
versions: +Python 3.8

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