195ad4830e
Add a `min_type_alias_impl_trait` feature gate This new feature gate only permits type alias impl trait to be constrained by function and trait method return types. All other possible constraining sites like const/static types, closure return types and binding types are now forbidden and gated under the `type_alias_impl_trait` and `impl_trait_in_bindings` feature gates (which are both marked as incomplete, as they have various ways to ICE the compiler or cause query cycles where they shouldn't). r? `@nikomatsakis` This is best reviewed commit-by-commit |
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| Cargo.toml | ||
| README.md | ||
README.md
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.