[3.15] gh-80937: Fix memory leak in tkinter createcommand (GH-152294)#152327
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serhiy-storchaka merged 1 commit intoJun 26, 2026
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…2294) A command created with createcommand() held a strong reference to the interpreter, forming an uncollectable cycle (interpreter -> command -> interpreter) that kept the interpreter and the callback alive until the command was removed with deletecommand() or destroy(). The command now borrows the reference; it cannot outlive the interpreter, which deletes its commands when finalized. (cherry picked from commit bbf7786a904e558a15d01475356167e29b2e3708) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
This was referenced Jun 26, 2026
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A command created with createcommand() held a strong reference to the
interpreter, forming an uncollectable cycle (interpreter -> command ->
interpreter) that kept the interpreter and the callback alive until the
command was removed with deletecommand() or destroy(). The command now
borrows the reference; it cannot outlive the interpreter, which deletes its
commands when finalized.
(cherry picked from commit bbf7786)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com
Co-authored-by: Claude Opus 4.8 noreply@anthropic.com