[3.13] gh-79366: Fix a race condition when removing a logging handler (GH-154528) - #155078
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serhiy-storchaka merged 1 commit intoAug 2, 2026
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…ythonGH-154528) removeHandler() mutated the handler list in place, so if a handler was removed while callHandlers() was iterating the same list, the following handlers could be skipped. Replace the list instead of mutating it. (cherry picked from commit 083e038) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Ben Spiller <11992588+ben-spiller@users.noreply.github.com> Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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removeHandler() mutated the handler list in place, so if a handler was
removed while callHandlers() was iterating the same list, the following
handlers could be skipped. Replace the list instead of mutating it.
(cherry picked from commit 083e038)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com
Co-authored-by: Ben Spiller 11992588+ben-spiller@users.noreply.github.com
Co-authored-by: Claude Opus 4.8 (1M context) noreply@anthropic.com