[ty] fix infinite recursion bug in is_disjoint_from
#18043
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mtshiba
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AlexWaygood,
carljm,
dcreager and
sharkdp
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May 12, 2025
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Glyphack
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May 21, 2025
## Summary I found this bug while working on astral-sh#18041. The following code leads to infinite recursion. ```python from ty_extensions import is_disjoint_from, static_assert, TypeOf class C: @Property def prop(self) -> int: return 1 static_assert(not is_disjoint_from(int, TypeOf[C.prop])) ``` The cause is a trivial missing binding in `is_disjoint_from`. This PR fixes the bug and adds a test case (this is a simple fix and may not require a new test case?). ## Test Plan A new test case is added to `mdtest/type_properties/is_disjoint_from.md`.
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Summary
I found this bug while working on #18041. The following code leads to infinite recursion.
The cause is a trivial missing binding in
is_disjoint_from. This PR fixes the bug and adds a test case (this is a simple fix and may not require a new test case?).Test Plan
A new test case is added to
mdtest/type_properties/is_disjoint_from.md.