Rollup of 9 pull requests #91024
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Rollup of 9 pull requests #91024
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The `advance_by(n)` docs state that in the error case `Err(k)` that k is always less than n. It also states that `advance_by(0)` may return `Err(0)` to indicate an exhausted iterator. These statements are inconsistent. Since only one implementation (Skip) actually made use of that I changed it to return Ok(()) in that case too. While adding some tests I also found a bug in `Take::advance_back_by`.
In some situations we should want on influence into the .cargo/config when we use vendored source. One example is rust-lang#90764, when we want to workaround some references to crates forked and living in git, that are missing in the vendor/ directory. This commit will create the .cargo/config file only when the .cargo/ directory needs to be created.
Because it's always `'tcx`. In fact, some of them use a mixture of passed-in `$tcx` and hard-coded `'tcx`, so no other lifetime would even work. This makes the code easier to read.
Be more thorough in using `ItemObligation` and `BindingObligation` when evaluating obligations so that we can point at trait bounds that introduced unfulfilled obligations. We no longer incorrectly point at unrelated trait bounds (`substs-ppaux.verbose.stderr`). In particular, we now point at trait bounds on method calls. We no longer point at "obvious" obligation sources (we no longer have a note pointing at `Trait` saying "required by a bound in `Trait`", like in `associated-types-no-suitable-supertrait*`). Address part of rust-lang#89418.
`predicates_of` no longer changes when changing a trait's front matter because we no longer include the trait's span in the identity trait obligation.
Group obligations by `impl` block that introduced them.
Also use `Default::default()` in one `TypedArena::default()`, for consistency with `DroplessArena::default()`.
Make char conversion functions unstably const The char conversion functions like `char::from_u32` do trivial computations and can easily be converted into const fns. Only smaller tricks are needed to avoid non-const standard library functions like `Result::ok` or `bool::then_some`. Tracking issue: rust-lang#89259
…=nagisa Point at source of trait bound obligations in more places Be more thorough in using `ItemObligation` and `BindingObligation` when evaluating obligations so that we can point at trait bounds that introduced unfulfilled obligations. We no longer incorrectly point at unrelated trait bounds (`substs-ppaux.verbose.stderr`). In particular, we now point at trait bounds on method calls. We no longer point at "obvious" obligation sources (we no longer have a note pointing at `Trait` saying "required by a bound in `Trait`", like in `associated-types-no-suitable-supertrait*`). We no longer point at associated items (`ImplObligation`), as they didn't add any user actionable information, they just added noise. Address part of rust-lang#89418.
…tolnay Fix Iterator::advance_by contract inconsistency The `advance_by(n)` docs state that in the error case `Err(k)` that k is always less than n. It also states that `advance_by(0)` may return `Err(0)` to indicate an exhausted iterator. These statements are inconsistent. Since only one implementation (Skip) actually made use of that I changed it to return Ok(()) in that case too. While adding some tests I also found a bug in `Take::advance_back_by`.
…ents, r=estebank Improve suggestions for compatible variants on type mismatch. Fixes rust-lang#90553. Before:  After:  r? ``@estebank``
add const generics test cc rust-lang#89829 (comment) r? rust-lang/project-const-generics
…mulacrum bootstap: create .cargo/config only if not present In some situations we should want on influence into the .cargo/config when we use vendored source. One example is rust-lang#90764, when we want to workaround some references to crates forked and living in git, that are missing in the vendor/ directory. This commit will create the .cargo/config file only when the .cargo/ directory needs to be created.
windows: Return the "Not Found" error when a path is empty Fixes rust-lang#90940
Arenas cleanup I was looking closely at the arenas code and here are some small improvement to readability.
fix CTFE/Miri simd_insert/extract on array-style repr(simd) types The changed test would previously fail since `place_index` would just return the only field of `f32x4`, i.e., the array -- rather than *indexing into* the array which is what we have to do. The new helper methods will also be needed for rust-lang/miri#1912. r? `@oli-obk`
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@bors r+ rollup=never p=9 |
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📌 Commit 7131806 has been approved by |
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⌛ Testing commit 7131806 with merge 6c3bf3e3f32bc80f60806ad502cc42ad85d0d936... |
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