d853e9e1d6
Re-export `hashbrown::hash_table` from `rustc_data_structures` We don't always re-export shared dependencies, but for `hashbrown::hash_table` I think it makes sense, for a few reasons: - The lower-level `HashTable` type is already part of the public API of `rustc_data_structures` via the `ShardedHashMap` type alias, and other compiler crates currently depend on being able to access its internal hash tables. - The `Cargo.toml` entry for `hashbrown` is non-trivial, making it harder to keep in sync and harder to move between crates as needed. - [And we currently aren't using `[workspace.dependencies]` for various reasons.](https://github.com/rust-lang/rust/pull/146113) - It's fine for other compiler crates to use `hash_table` specifically (with care), but they probably shouldn't be using the higher-level `hashbrown::HashMap` and `hashbrown::HashSet` types directly, because they should prefer the various map/set aliases defined by `rustc_data_structures`. Re-exporting only `hash_table` helps to discourage use of those other types. There should be no change to compiler behaviour. |
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