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signatures
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For E0223, suggest associated functions that are similar to the path
e.g. for `String::from::utf8`, suggest `String::from_utf8`
Closes #109195
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That is, change `diagnostic_outside_of_impl` and
`untranslatable_diagnostic` from `allow` to `deny`, because more than
half of the compiler has be converted to use translated diagnostics.
This commit removes more `deny` attributes than it adds `allow`
attributes, which proves that this change is warranted.
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Rollup of 8 pull requests
Successful merges:
- #119759 (Add FileCheck annotations to dataflow-const-prop tests)
- #120323 (On E0277 be clearer about implicit `Sized` bounds on type params and assoc types)
- #120473 (Only suggest removal of `as_*` and `to_` conversion methods on E0308)
- #120540 (add test for try-block-in-match-arm)
- #120547 (`#![feature(inline_const_pat)]` is no longer incomplete)
- #120552 (Correctly check `never_type` feature gating)
- #120555 (put pnkfelix (me) back on the review queue.)
- #120556 (Improve the diagnostics for unused generic parameters)
r? `@ghost`
`@rustbot` modify labels: rollup
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Improve the diagnostics for unused generic parameters
* Don't emit two errors (namely E0091 *and* E0392) for unused type parameters on *lazy* type aliases
* Fix the diagnostic help message of E0392 for *lazy* type aliases: Don't talk about the “fields” of lazy type aliases (use the term “body” instead) and don't suggest `PhantomData` for them, it doesn't make much sense
* Consolidate the diagnostics for E0091 (unused type parameters in type aliases) and E0392 (unused generic parameters due to bivariance) and make it translatable
* Still keep the error codes distinct (for now)
* Naturally leads to better diagnostics for E0091
r? ```@oli-obk``` (to ballast your review load :P) or compiler
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Remove unnecessary `.to_string()`/`.as_str()`s
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- `emitted_at` isn't used outside the crate.
- `code` and `messages` are public fields, so there's no point have
trivial getters/setters for them.
- `suggestions` is public, so the comment about "functionality on
`Diagnostic`" isn't needed.
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```
error[E0277]: the size for values of type `[i32]` cannot be known at compilation time
--> f100.rs:2:33
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2 | let _ = std::mem::size_of::<[i32]>();
| ^^^^^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `[i32]`
note: required by an implicit `Sized` bound in `std::mem::size_of`
--> /home/gh-estebank/rust/library/core/src/mem/mod.rs:312:22
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312 | pub const fn size_of<T>() -> usize {
| ^ required by the implicit `Sized` requirement on this bound in `size_of`
```
Fix #120178.
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hir: Refactor getters for owner nodes
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Normalize region obligation in lexical region resolution with next-gen solver
This normalizes region obligations when we `resolve_regions`, since they may be unnormalized with deferred projection equality.
It's pretty hard to add tests that exercise this without also triggering MIR borrowck errors (because we don't normalize there yet). I've added one test with two revisions that should test that we both 1. normalize region obligations in the param env, and 2. normalize registered region obligations during lexical region resolution.
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Bound errors span label cleanup
Consolidate span labels for "this type doesn't satisfy a bound" for more compact diagnostic output.
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Rollup of 9 pull requests
Successful merges:
- #116677 (References refer to allocated objects)
- #118625 (Improve handling of expressions in patterns)
- #120266 (Improve documentation for [A]Rc::into_inner)
- #120373 (Adjust Behaviour of `read_dir` and `ReadDir` in Windows Implementation: Check Whether Path to Search In Exists)
- #120390 (Borrow check inline const patterns)
- #120420 (Stop using derivative in rustc_pattern_analysis)
- #120428 (hir: Two preparatory changes for #120206)
- #120453 (Fix incorrect comment in normalize_newlines)
- #120462 (Clean dead code)
r? `@ghost`
`@rustbot` modify labels: rollup
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Do not attempt to provide an accurate suggestion for `impl Trait`
in bare trait types when linting. Instead, only do the object
safety check when an E0782 is already going to be emitted in the
2021 edition.
Fix #120241.
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hir: Two preparatory changes for #120206
cc https://github.com/rust-lang/rust/pull/120206
r? ```@compiler-errors```
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Error codes are integers, but `String` is used everywhere to represent
them. Gross!
This commit introduces `ErrCode`, an integral newtype for error codes,
replacing `String`. It also introduces a constant for every error code,
e.g. `E0123`, and removes the `error_code!` macro. The constants are
imported wherever used with `use rustc_errors::codes::*`.
With the old code, we have three different ways to specify an error code
at a use point:
```
error_code!(E0123) // macro call
struct_span_code_err!(dcx, span, E0123, "msg"); // bare ident arg to macro call
\#[diag(name, code = "E0123")] // string
struct Diag;
```
With the new code, they all use the `E0123` constant.
```
E0123 // constant
struct_span_code_err!(dcx, span, E0123, "msg"); // constant
\#[diag(name, code = E0123)] // constant
struct Diag;
```
The commit also changes the structure of the error code definitions:
- `rustc_error_codes` now just defines a higher-order macro listing the
used error codes and nothing else.
- Because that's now the only thing in the `rustc_error_codes` crate, I
moved it into the `lib.rs` file and removed the `error_codes.rs` file.
- `rustc_errors` uses that macro to define everything, e.g. the error
code constants and the `DIAGNOSTIC_TABLES`. This is in its new
`codes.rs` file.
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Remove `track_errors` entirely
follow up to https://github.com/rust-lang/rust/pull/119869
r? `@matthewjasper`
There are some diagnostic changes adding new diagnostics or not emitting some anymore. We can improve upon that in follow-up work imo.
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Replacement of #114390: Add new intrinsic `is_var_statically_known` and optimize pow for powers of two
This adds a new intrinsic `is_val_statically_known` that lowers to [``@llvm.is.constant.*`](https://llvm.org/docs/LangRef.html#llvm-is-constant-intrinsic).` It also applies the intrinsic in the int_pow methods to recognize and optimize the idiom `2isize.pow(x)`. See #114390 for more discussion.
While I have extended the scope of the power of two optimization from #114390, I haven't added any new uses for the intrinsic. That can be done in later pull requests.
Note: When testing or using the library, be sure to use `--stage 1` or higher. Otherwise, the intrinsic will be a noop and the doctests will be skipped. If you are trying out edits, you may be interested in [`--keep-stage 0`](https://rustc-dev-guide.rust-lang.org/building/suggested.html#faster-builds-with---keep-stage).
Fixes #47234
Resolves #114390
`@Centri3`
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Rollup of 9 pull requests
Successful merges:
- #112806 (Small code improvements in `collect_intra_doc_links.rs`)
- #119766 (Split tait and impl trait in assoc items logic)
- #120139 (Do not normalize closure signature when building `FnOnce` shim)
- #120160 (Manually implement derived `NonZero` traits.)
- #120171 (Fix assume and assert in jump threading)
- #120183 (Add `#[coverage(off)]` to closures introduced by `#[test]` and `#[bench]`)
- #120195 (add several resolution test cases)
- #120259 (Split Diagnostics for Uncommon Codepoints: Add List to Display Characters Involved)
- #120261 (Provide structured suggestion to use trait objects in some cases of `if` arm type divergence)
r? `@ghost`
`@rustbot` modify labels: rollup
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Split tait and impl trait in assoc items logic
And simplify the assoc item logic where applicable.
This separation shows that it is easier to reason about impl trait in assoc items compared with TAITs. See https://rust-lang.zulipchat.com/#narrow/stream/315482-t-compiler.2Fetc.2Fopaque-types/topic/impl.20trait.20in.20associated.20type for some discussion.
The current plan is to try to stabilize impl trait in associated items before TAIT, as they do not have any issues with their defining scopes (see https://github.com/rust-lang/rust/issues/107645 for why this is not a trivial or uncontroversial topic).
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A bunch of random modifications
r? oli-obk
Kitchen sink of changes that I didn't know where to put elsewhere. Documentation tweaks mostly, but also removing some unreachable code and simplifying the pretty printing for closures/coroutines.
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Rollup of 10 pull requests
Successful merges:
- #117910 (Refactor uses of `objc_msgSend` to no longer have clashing definitions)
- #118639 (Undeprecate lint `unstable_features` and make use of it in the compiler)
- #119801 (Fix deallocation with wrong allocator in (A)Rc::from_box_in)
- #120058 (bootstrap: improvements for compiler builds)
- #120059 (Make generic const type mismatches not hide trait impls from the trait solver)
- #120097 (Report unreachable subpatterns consistently)
- #120137 (Validate AggregateKind types in MIR)
- #120164 (`maybe_lint_impl_trait`: separate `is_downgradable` from `is_object_safe`)
- #120181 (Allow any `const` expression blocks in `thread_local!`)
- #120218 (rustfmt: Check that a token can begin a nonterminal kind before parsing it as a macro arg)
r? `@ghost`
`@rustbot` modify labels: rollup
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`maybe_lint_impl_trait`: separate `is_downgradable` from `is_object_safe`
https://github.com/rust-lang/rust/pull/119752 leveraged and overloaded `is_object_safe` to prevent an ICE, but accurate object safety information is needed for precise suggestions. This separates out `is_downgradable`, used for the ICE prevention, and `is_object_safe`, which returns to its original meaning.
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compiler-errors:dont-make-non-lifetime-binders-in-rtn, r=fmease
Don't actually make bound ty/const for RTN
Avoid creating an unnecessary non-lifetime binder when we do RTN on a method that has ty/const params.
Fixes #120208
r? oli-obk
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