Check generics parity before collecting return-position impl Traits in trait
#104295
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r? @eholk (rustbot has picked a reviewer for you, use r? to override) |
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☔ The latest upstream changes (presumably #104310) made this pull request unmergeable. Please resolve the merge conflicts. |
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☔ The latest upstream changes (presumably #104600) made this pull request unmergeable. Please resolve the merge conflicts. |
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Looks good. Thanks for the extra comments as well! I think I'd prefer to see the error deduplicated here rather than relying on cargo, but if it's really annoying to do that I think it's fine this way. Your choice. Feel free to r=me after resolving the merge conflicts. |
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Nov 22, 2022
Rollup of 6 pull requests Successful merges: - rust-lang#104295 (Check generics parity before collecting return-position `impl Trait`s in trait) - rust-lang#104464 (Reduce exceptions overallocation on non Windows x86_64) - rust-lang#104615 (Create def_id for async fns during lowering) - rust-lang#104669 (Only declare bindings for if-let guards once per arm) - rust-lang#104701 (Remove a lifetime resolution hack from `compare_predicate_entailment`) - rust-lang#104710 (disable strict-provenance-violating doctests in Miri) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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The only thing is that this duplicates the error message for number of generics mismatch, but we already deduplicate that error message in Cargo. I could add a flag to delay the error if the reviewer cares.
Fixes #104281
Also drive-by adds a few comments to the
collect_trait_impl_trait_tysmethod, and removes an unused argument fromcompare_number_of_generics.