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1b3fba066c
rust/compiler/rustc_hir_analysis
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bors 1b3fba066c Auto merge of #124203 - lukas-code:delete-deleting-caches, r=compiler-errors 
fix normalizing in different `ParamEnv`s with the same `InferCtxt`

This PR changes the key of the projection cache from just `AliasTy` to `(AliasTy, ParamEnv)` to allow normalizing in different `ParamEnv`s without resetting caches. Previously, normalizing the same alias in different param envs would always reuse the cached result from the first normalization, which is incorrect if the projection clauses in the param env have changed.

Fixing this bug allows us to get rid of `InferCtxt::clear_caches`, which was only used by the `AutoTraitFinder`, because it requires normalizing in different param envs.

r? `@fmease`
2024-04-21 19:05:08 +00:00
..
src Auto merge of #124203 - lukas-code:delete-deleting-caches, r=compiler-errors 2024-04-21 19:05:08 +00:00
Cargo.toml bump itertools to 0.12 2024-03-08 12:34:05 +03:00
messages.ftl Explicitly mention Self 2024-04-20 11:39:43 -04:00
README.md rustc_typeck to rustc_hir_analysis 2022-09-27 10:37:23 +02:00

README.md

For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.