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Title: Align nested code object bytecode parity by youknowone · Pull Request #7942 · RustPython/RustPython · GitHub

Open Graph Title: Align nested code object bytecode parity by youknowone · Pull Request #7942 · RustPython/RustPython

X Title: Align nested code object bytecode parity by youknowone · Pull Request #7942 · RustPython/RustPython

Description: Summary by CodeRabbit Bug Fixes Improved try/except/finally, loop-break, and match/arm code generation to better match CPython control-flow, fixing miscompiled breaks, borrowing, and jump behaviors (including async comprehensions). Fixed class-name mangling for underscore-only class names. Tests Added and updated unit tests to assert CPython-like instruction layout and borrow/load-fast behavior. Tooling Stabilized disassembly constant representations for cross-interpreter consistency. Chores Minor public API/compatibility adjustment in code-generation exports.

Open Graph Description: Summary by CodeRabbit Bug Fixes Improved try/except/finally, loop-break, and match/arm code generation to better match CPython control-flow, fixing miscompiled breaks, borrowing, and jump behavi...

X Description: Summary by CodeRabbit Bug Fixes Improved try/except/finally, loop-break, and match/arm code generation to better match CPython control-flow, fixing miscompiled breaks, borrowing, and jump behavi...

Opengraph URL: https://github.com/RustPython/RustPython/pull/7942

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2c932fa Align nested code object bytecode parity youknowone May 20, 2026 https://github.com/RustPython/RustPython/pull/7942/commits/2c932fa57e69fc414e1691055abeb34c232ff6d3
522b28d Align CPython jump-back parity youknowone May 21, 2026 https://github.com/RustPython/RustPython/pull/7942/commits/522b28dc873bd5a5ad5080fa3fb30a4ab87bea2c
22fa3ce Align match guard block parity with CPython youknowone May 21, 2026 https://github.com/RustPython/RustPython/pull/7942/commits/22fa3cea92f015e67f4ed8bb42a0d56f32069687
573e244 Align CPython block borrow parity youknowone May 21, 2026 https://github.com/RustPython/RustPython/pull/7942/commits/573e2446bc48debf74991b978f6dc2dc00bcfa88
5c913f2 Align CPython load-fast barrier parity youknowone May 21, 2026 https://github.com/RustPython/RustPython/pull/7942/commits/5c913f24c27496dbcafee5cfbb3cd052235bb5e8
d472093 Align CPython try-end label parity youknowone May 21, 2026 https://github.com/RustPython/RustPython/pull/7942/commits/d47209324a5ee6531d0519d54061415d5d43c6c7
b470d47 Align CPython try-except end label barriers youknowone May 21, 2026 https://github.com/RustPython/RustPython/pull/7942/commits/b470d47d3d8a18ea081ed102c5dccad5210becb8
6c48cea Align more CPython bytecode edge cases youknowone May 21, 2026 https://github.com/RustPython/RustPython/pull/7942/commits/6c48cea68c5652188fbc814b7234338dfe89d2e1
4d19a8c Align bare except finally bytecode layout youknowone May 21, 2026 https://github.com/RustPython/RustPython/pull/7942/commits/4d19a8c7140091a2a57df98d35c2135624e1b5f4
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