bjoernager/rust
bjoernager/rust
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rust/compiler/rustc_middle
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Jacob Pratt 4cd157e6b9
Rollup merge of #133643 - lcnr:merge-candidates, r=compiler-errors 
-Znext-solver: modify candidate preference rules

This implements the design proposed in the FCP in #132325 and matches the old solver behavior. I hope the inline comments are all sufficiently clear, I personally think this is a fairly clear improvement over the existing approach using `fn discard_impls_shadowed_by_env`. This fixes https://github.com/rust-lang/trait-system-refactor-initiative/issues/96.

This also fixes #133639 which encounters an ICE in negative coherence when evaluating the where-clause. Given the features required to trigger this ICE 🤷

r? ``@compiler-errors``
2024-12-18 21:38:08 -05:00
..
src Rollup merge of #133643 - lcnr:merge-candidates, r=compiler-errors 2024-12-18 21:38:08 -05:00
Cargo.toml rename rustc_attr to rustc_attr_parsing and create rustc_attr_data_structures 2024-12-16 19:08:19 +01:00
messages.ftl Move some code from Compiler::enter to GlobalCtxt::finish 2024-11-09 17:55:39 +00:00
README.md

README.md

For more information about how rustc works, see the rustc dev guide.