Carl Meyer 2467c4352e [ty] propagate visitors and constraints through has_relation_in_invariant_position (#20259) ...

## Summary

The sub-checks for assignability and subtyping of materializations
performed in `has_relation_in_invariant_position` and
`is_subtype_in_invariant_position` need to propagate the
`HasRelationToVisitor`, or we can stack overflow.

A side effect of this change is that we also propagate the
`ConstraintSet` through, rather than using `C::from_bool`, which I think
may also become important for correctness in cases involving type
variables (though it isn't testable yet, since we aren't yet actually
creating constraints other than always-true and always-false.)

## Test Plan

Added mdtest (derived from code found in pydantic) which
stack-overflowed before this PR.

With this change incorporated, pydantic now checks successfully on my
draft PR for PEP 613 TypeAlias support.

2025-09-06 00:17:17 +00:00

..

module_resolver

[ty] Add naive implementation of completions for unimported symbols

2025-09-03 09:57:26 -04:00

semantic_index

[ty] Implement the legacy PEP-484 convention for indicating positional-only parameters (#20248)

2025-09-05 17:56:06 +01:00

types

[ty] propagate visitors and constraints through has_relation_in_invariant_position (#20259)

2025-09-06 00:17:17 +00:00

util

[ty] Avoid overcounting shared memory usage (#19773)

2025-08-06 15:32:02 -04:00

ast_node_ref.rs

[ty] Implement the legacy PEP-484 convention for indicating positional-only parameters (#20248)

2025-09-05 17:56:06 +01:00

db.rs

[ty] Track open files in the server (#19264)

2025-07-18 19:33:35 +05:30

dunder_all.rs

[ty] Avoid overcounting shared memory usage (#19773)

2025-08-06 15:32:02 -04:00

lib.rs

[ty] Add naive implementation of completions for unimported symbols

2025-09-03 09:57:26 -04:00

lint.rs

[ty] Add environment variable to dump Salsa memory usage stats (#18928)

2025-06-26 21:27:51 +00:00

list.rs

Update Rust toolchain to 1.89 (#19807)

2025-08-07 18:21:50 +02:00

module_name.rs

[ty] Split out another constructor for ModuleName

2025-08-20 10:27:54 -04:00

node_key.rs

[ty] Implement the legacy PEP-484 convention for indicating positional-only parameters (#20248)

2025-09-05 17:56:06 +01:00

place.rs

[ty] Add backreferences to TypedDict items in diagnostics (#20262)

2025-09-05 12:38:37 +02:00

program.rs

[ty] Track heap usage of salsa structs (#19790)

2025-08-12 13:28:44 +02:00

pull_types.rs

Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011)

2025-06-28 20:24:00 +02:00

python_platform.rs

[ty] Track heap usage of salsa structs (#19790)

2025-08-12 13:28:44 +02:00

rank.rs

[ty] Garbage-collect reachability constraints (#19414)

2025-07-21 14:16:27 -04:00

semantic_index.rs

[ty] Implement the legacy PEP-484 convention for indicating positional-only parameters (#20248)

2025-09-05 17:56:06 +01:00

semantic_model.rs

[ty] Add naive implementation of completions for unimported symbols

2025-09-03 09:57:26 -04:00

site_packages.rs

[ty] Disallow std::env and io methods in most ty crates (#20046)

2025-08-22 11:13:47 -07:00

suppression.rs

Update Rust toolchain to 1.89 (#19807)

2025-08-07 18:21:50 +02:00

types.rs

[ty] propagate visitors and constraints through has_relation_in_invariant_position (#20259)

2025-09-06 00:17:17 +00:00

unpack.rs

[ty] Track heap usage of salsa structs (#19790)

2025-08-12 13:28:44 +02:00