Carl Meyer e0f3a064b9 [ty] don't iterate over a hashset (#21649) ... ## Summary This caused "deterministic but chaotic" ordering of some intersection types in diagnostics. When calling a union, we infer the argument type once per matching parameter type, intersecting the inferred types for the argument expression, and we did that in an unpredictable order. We do need a hashset here for de-duplication. Sometimes we call large unions where the type for a given parameter is the same across the union, we should infer the argument once per parameter type, not once per union element. So use an `FxIndexSet` instead of an `FxHashSet`. ## Test Plan With this change, switching between `main` and https://github.com/astral-sh/ruff/pull/21646 no longer changes the ordering of the intersection type in the test in cca3a8045d		2025-11-26 16:39:49 -08:00
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resources	[ty] handle recursive type inference properly (#20566)	2025-11-26 08:50:26 -08:00
src	[ty] don't iterate over a hashset (#21649)	2025-11-26 16:39:49 -08:00
tests	[ty] handle recursive type inference properly (#20566)	2025-11-26 08:50:26 -08:00
build.rs
Cargo.toml
mdtest.py
mdtest.py.lock