merge need_type_info_err(_const)
#77093
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compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs
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| --> $DIR/issue-77092.rs:13:26 | ||
| | | ||
| LL | println!("{:?}", take_array_from_mut(&mut arr, i)); | ||
| | ^^^^^^^^^^^^^^^^^^^ cannot infer the value of the constant `{_: usize}` |
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Would it make more sense here to use a similar message to below?
E.g.
cannot infer the value of const parameter `N`
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the failed inference variable has a ConstInference origin, as it was created from unifying two uninferred consts vids.
So we don't have the info to emit a better error message in this case. We probably should "just" use one of the ConstParams as the origin in that case. I think the reason we don't do so with types is due to variance.
Not completely sure about all of this though, so I would prefer to look into this in a followup PR
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Implement the name changes and put the result of previously I am myself not completely happy with the new names but wasn't able to think of anything better 😆 |
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@bors r=varkor rollup |
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📌 Commit 9a607c0 has been approved by |
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…r=varkor merge `need_type_info_err(_const)` I hoped that this would automatically solve rust-lang#76737 but it doesn't quite seem like it fixes rust-lang#77092 r? @varkor
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Rollup of 12 pull requests Successful merges: - rust-lang#75454 (Explicitly document the size guarantees that Option makes.) - rust-lang#76631 (Add `x.py setup`) - rust-lang#77076 (Add missing code examples on slice iter types) - rust-lang#77093 (merge `need_type_info_err(_const)`) - rust-lang#77122 (Add `#![feature(const_fn_floating_point_arithmetic)]`) - rust-lang#77127 (Update mdBook) - rust-lang#77161 (Remove TrustedLen requirement from BuilderMethods::switch) - rust-lang#77166 (update Miri) - rust-lang#77181 (Add doc alias for pointer primitive) - rust-lang#77204 (Remove stray word from `ClosureKind::extends` docs) - rust-lang#77207 (Rename `whence` to `span`) - rust-lang#77211 (Remove unused #[allow(...)] statements from compiler/) Failed merges: - rust-lang#77170 (Remove `#[rustc_allow_const_fn_ptr]` and add `#![feature(const_fn_fn_ptr_basics)]`) r? `@ghost`
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I hoped that this would automatically solve #76737 but it doesn't quite seem like it
fixes #77092
r? @varkor