[ty] Fix CallableTypeOf[…] for classmethods (#20345)

## Summary See https://github.com/astral-sh/ruff/pull/20338#discussion_r2337731998 ## Test Plan Regression test.
2025-09-29 21:34:57 +00:00 · 2025-09-11 10:14:38 +02:00 · 2025-09-11 10:14:38 +02:00 · 59c8fda3f8
commit 59c8fda3f8
parent c6b92b918e
2 changed files with 7 additions and 1 deletions
--- a/crates/ty_python_semantic/src/types/infer/builder/type_expression.rs
+++ b/crates/ty_python_semantic/src/types/infer/builder/type_expression.rs
@ -1166,7 +1166,7 @@ impl<'db> TypeInferenceBuilder<'db, '_> {
                    if let Some(bound_method) = argument_type.into_bound_method() {
                        binding
                            .signature
-                            .bind_self(self.db(), Some(bound_method.self_instance(db)))
+                            .bind_self(self.db(), Some(bound_method.typing_self_type(db)))
                    } else {
                        binding.signature.clone()
                    }