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[ty] Fix panic for attribute expressions with empty value (#19069)

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## Summary

closes https://github.com/astral-sh/ty/issues/738

## Test Plan

Added corpus test
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David Peter 2025-07-09 08:46:33 +02:00 • committed by GitHub
parent 05139a323b
commit ab3af924ef
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1
crates/ty_python_semantic/resources/corpus/88_regression_issue_738.py Normal file
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@ -0,0 +1 @@
[.

7
crates/ty_python_semantic/src/types/infer.rs
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@ -5754,6 +5754,13 @@ impl<'db, 'ast> TypeInferenceBuilder<'db, 'ast> {
}; };
(place, None) (place, None)
} else { } else {
if expr_ref
.as_name_expr()
.is_some_and(|name| name.is_invalid())
{
return (Place::Unbound, None);
}
let use_id = expr_ref.scoped_use_id(db, scope); let use_id = expr_ref.scoped_use_id(db, scope);
let place = place_from_bindings(db, use_def.bindings_at_use(use_id)); let place = place_from_bindings(db, use_def.bindings_at_use(use_id));
(place, Some(use_id)) (place, Some(use_id))