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Shunsuke Shibayama 722f1a7d7a
[ty] fix stack overflow when comparing recursive `NamedTuple` types with `is_disjoint_from` (#20538) 
## Summary

I found this bug while working on #20528.
The minimum reproducible code is:

```python
from __future__ import annotations

from typing import NamedTuple
from ty_extensions import is_disjoint_from, static_assert

class Path(NamedTuple):
    prev: Path | None
    key: str

static_assert(not is_disjoint_from(Path, Path))
```

A stack overflow occurs when a nominal instance type inherits from
`NamedTuple` and is defined recursively.
This PR fixes this bug.

## Test Plan

mdtest updated
 		2025-09-23 19:29:03 +02:00
..
corpus [ty] fix deferred name loading in PEP695 generic classes/functions (#19888) 2025-08-13 15:51:59 -07:00
mdtest [ty] fix stack overflow when comparing recursive `NamedTuple` types with `is_disjoint_from` (#20538) 2025-09-23 19:29:03 +02:00
primer [ty] move graphql-core to good.txt (#20447) 2025-09-17 10:09:32 +02:00
README.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00

README.md

Markdown files within the mdtest/ subdirectory are tests of type inference and type checking; executed by the tests/mdtest.rs integration test.

See crates/ty_test/README.md for documentation of this test format.