[red-knot] Computing a type ordering for two non-normalized types is meaningless#17734
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AlexWaygood merged 1 commit intomainfrom Apr 30, 2025
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[red-knot] Computing a type ordering for two non-normalized types is meaningless#17734AlexWaygood merged 1 commit intomainfrom
AlexWaygood merged 1 commit intomainfrom
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* main: [red-knot] Use 'full' salsa backtrace output that includes durability and revisions (#17735) [red-knot] Initial support for protocol types (#17682) [red-knot] Computing a type ordering for two non-normalized types is meaningless (#17734) [red-knot] Include salsa backtrace in check and mdtest panic messages (#17732) [red-knot] Fix control flow for `assert` statements (#17702) [red-knot] Fix recording of negative visibility constraints (#17731) [red-knot] Update salsa (#17730) [red-knot] Support overloads for callable equivalence (#17698) [red-knot] Run py-fuzzer in CI to check for new panics (#17719) Upload red-knot binaries in CI on completion of linux tests (#17720) [`flake8-use-pathlib`] Fix `PTH123` false positive when `open` is passed a file descriptor from a function call (#17705)
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Summary
This PR addresses @carljm's review comment in #17682 (comment).
A meaningful order between two types can only be established if the types have been normalized. This invariant is already asserted in various places throughout
type_ordering.rs, but it makes more sense to assert the invariant once at the top of the function, with a better error message.Test Plan
cargo test -p red_knot_python_semanticQUICKCHECK_TESTS=100000 cargo test --release -p red_knot_python_semantic -- --ignored types::property_tests::stable