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abc.register changes tp_flags without updating type_version #148450
Description
Bug report
Bug description:
see discussion in #148124 (comment)
abc.register will change the tp_flags but don't update the type version, so JIT won't invalid the old trace:
Lines 601 to 603 in 03d2f03
CPython versions tested on:
CPython main branch
Operating systems tested on:
No response
Linked PRs
- gh-148450: abc.register needs to update type_version when tp_flags is changed. #148623
- [3.15] gh-148450: abc.register needs to update type_version when tp_flags is changed (GH-148623) #150300
- [3.13] gh-148450: abc.register needs to update type_version when tp_flags is changed (GH-148623) #150307
- [3.14] gh-148450: abc.register needs to update type_version when tp_flags is changed (GH-148623) #150308
Activity
Fidget-Spinner commented on Apr 12, 2026
To be clear: this affects the specializing interpreter as well. So it should be backported to 3.13 at the very least.
gh-148450: `abc.register` needs to update `type_version` when `tp_fla…
[3.15] gh-148450: `abc.register` needs to update `type_version` when …
[3.13] gh-148450: abc.register needs to update type_version when tp_f…
[3.14] gh-148450: abc.register needs to update type_version when tp_f…