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GH-123545: Remove duplicative Py_DECREF when handling _PyOptimizer_Optimize errors #123546

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Merged
merged 4 commits into from
Sep 5, 2024
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GH-123545: Remove duplicative Py_DECREF when handling _PyOptimizer_Optimize errors #123546

merged 4 commits into from
Sep 5, 2024

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@savannahostrowski
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@savannahostrowski savannahostrowski commented Aug 31, 2024 •
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This PR removes duplicative Py_DECREF calls when _PyOptimizer_Optimize returns -1. In both cases, we do so in the conditional block and then as part of the GOTO_UNWIND macro. This never really happens in practice, but it would be problematic if this error'd.

@bedevere-app bedevere-app bot mentioned this pull request Aug 31, 2024
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brandtbucher
brandtbucher approved these changes Sep 3, 2024
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Yep, it looks like this is taken care of in error_tier_two (where GOTO_UNWIND() jumps). Just one suggestion for rewording the NEWS entry:

@brandtbucher brandtbucher self-assigned this Sep 3, 2024
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This will probably require a manual backport, unfortunately.

@brandtbucher brandtbucher added type-bug An unexpected behavior, bug, or error interpreter-core (Objects, Python, Grammar, and Parser dirs) needs backport to 3.13 bugs and security fixes labels Sep 3, 2024
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Also, the test failures are weird, but look unrelated.

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picnixz commented Sep 4, 2024

Also, the test failures are weird, but look unrelated.

They are unrelated. They are caused by some weird glibc stuff so don't worry!

brandtbucher
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Awesome, thanks!

The automatic backport will probably fail, but the bot should give you instructions for how to do it manually. Let me know if you need help. I think only _DYNAMIC_EXIT needs to be updated for 3.13, since _EXIT_TRACE works differently on that branch.

@brandtbucher brandtbucher merged commit 1fbc118 into python:main Sep 5, 2024
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Thanks @savannahostrowski for the PR, and @brandtbucher for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13.
🐍🍒⛏🤖

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Sorry, @savannahostrowski and @brandtbucher, I could not cleanly backport this to 3.13 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 1fbc118c5d3916e920a57cda3cb6d9a0292de26e 3.13

savannahostrowski added a commit to savannahostrowski/cpython that referenced this pull request Sep 6, 2024
@savannahostrowski
[3.13] pythonGH-123545: Remove duplicate Py_DECREF when handling _PyO…
a9d68f3 
…ptimizer_Optimize errors (pythonGH-123546)

(cherry picked from commit 1fbc118)

Co-authored-by: Savannah Ostrowski <[email protected]>
@savannahostrowski savannahostrowski mentioned this pull request Sep 6, 2024
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bedevere-app bot commented Sep 6, 2024

GH-123759 is a backport of this pull request to the 3.13 branch.

@bedevere-app bedevere-app bot removed the needs backport to 3.13 bugs and security fixes label Sep 6, 2024
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bedevere-app bot commented Sep 6, 2024

GH-123759 is a backport of this pull request to the 3.13 branch.

@savannahostrowski savannahostrowski deleted the fix-double-decref branch September 27, 2024 16:51
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@brandtbucher brandtbucher brandtbucher approved these changes

@markshannon markshannon Awaiting requested review from markshannon markshannon is a code owner

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