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[`missing_asserts_for_indexing`]: accept length equality checks
Fixes #11835
The lint now allows indexing with indices 0 and 1 when an `assert!(x.len() == 2);` is found.
(Also fixed a typo in the doc example)
changelog: [`missing_asserts_for_indexing`]: accept len equality checks as a valid assertion
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new lint: `repeat_vec_with_capacity`
Closes #11537
[Lint description](https://github.com/y21/rust-clippy/blob/repeat_vec_with_capacity/clippy_lints/src/repeat_vec_with_capacity.rs#L14) should explain this PR :)
changelog: new lint: `repeat_vec_with_capacity`
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Rustup
r? `@ghost`
changelog: none
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Implement completion for the callable fields.
Fixes #14656
PR is opened with basic changes. It could be improved by having a new `SymbolKind` for the callable fields and implementing a separate render function similar to the `render_method` for the new `SymbolKind`.
It could also be done without any changes to the `SymbolKind` of course, have the new function called based on the type of field.
I prefer the former method.
Please give any thoughts or changes you think is appropriate for this method. I could start working on that in this same PR.
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vis note for no pub reexports glob import
Fixes #115966
Only trigger the `unused_import` lint when it's not being used.
r? `@petrochenkov`
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Liveness data is pushed from multiple parts of NLL. Instead of changing
the call sites to maintain live loans, move the latter to `LivenessValues` where
this liveness data is pushed to, and maintain live loans there.
This fixes the differences in polonius scopes on some CFGs where a
variable was dead in tracing but as a MIR terminator its regions were marked
live from "constraint generation"
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for consistency with how they're named everywhere else
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Initial support for implicit drop inlay hint
cc #15785
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Stabilize C string literals
RFC: https://rust-lang.github.io/rfcs/3348-c-str-literal.html
Tracking issue: https://github.com/rust-lang/rust/issues/105723
Documentation PR (reference manual): https://github.com/rust-lang/reference/pull/1423
# Stabilization report
Stabilizes C string and raw C string literals (`c"..."` and `cr#"..."#`), which are expressions of type [`&CStr`](https://doc.rust-lang.org/stable/core/ffi/struct.CStr.html). Both new literals require Rust edition 2021 or later.
```rust
const HELLO: &core::ffi::CStr = c"Hello, world!";
```
C strings may contain any byte other than `NUL` (`b'\x00'`), and their in-memory representation is guaranteed to end with `NUL`.
## Implementation
Originally implemented by PR https://github.com/rust-lang/rust/pull/108801, which was reverted due to unintentional changes to lexer behavior in Rust editions < 2021.
The current implementation landed in PR https://github.com/rust-lang/rust/pull/113476, which restricts C string literals to Rust edition >= 2021.
## Resolutions to open questions from the RFC
* Adding C character literals (`c'.'`) of type `c_char` is not part of this feature.
* Support for `c"..."` literals does not prevent `c'.'` literals from being added in the future.
* C string literals should not be blocked on making `&CStr` a thin pointer.
* It's possible to declare constant expressions of type `&'static CStr` in stable Rust (as of v1.59), so C string literals are not adding additional coupling on the internal representation of `CStr`.
* The unstable `concat_bytes!` macro should not accept `c"..."` literals.
* C strings have two equally valid `&[u8]` representations (with or without terminal `NUL`), so allowing them to be used in `concat_bytes!` would be ambiguous.
* Adding a type to represent C strings containing valid UTF-8 is not part of this feature.
* Support for a hypothetical `&Utf8CStr` may be explored in the future, should such a type be added to Rust.
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Stabilize C string literals
RFC: https://rust-lang.github.io/rfcs/3348-c-str-literal.html
Tracking issue: https://github.com/rust-lang/rust/issues/105723
Documentation PR (reference manual): https://github.com/rust-lang/reference/pull/1423
# Stabilization report
Stabilizes C string and raw C string literals (`c"..."` and `cr#"..."#`), which are expressions of type [`&CStr`](https://doc.rust-lang.org/stable/core/ffi/struct.CStr.html). Both new literals require Rust edition 2021 or later.
```rust
const HELLO: &core::ffi::CStr = c"Hello, world!";
```
C strings may contain any byte other than `NUL` (`b'\x00'`), and their in-memory representation is guaranteed to end with `NUL`.
## Implementation
Originally implemented by PR https://github.com/rust-lang/rust/pull/108801, which was reverted due to unintentional changes to lexer behavior in Rust editions < 2021.
The current implementation landed in PR https://github.com/rust-lang/rust/pull/113476, which restricts C string literals to Rust edition >= 2021.
## Resolutions to open questions from the RFC
* Adding C character literals (`c'.'`) of type `c_char` is not part of this feature.
* Support for `c"..."` literals does not prevent `c'.'` literals from being added in the future.
* C string literals should not be blocked on making `&CStr` a thin pointer.
* It's possible to declare constant expressions of type `&'static CStr` in stable Rust (as of v1.59), so C string literals are not adding additional coupling on the internal representation of `CStr`.
* The unstable `concat_bytes!` macro should not accept `c"..."` literals.
* C strings have two equally valid `&[u8]` representations (with or without terminal `NUL`), so allowing them to be used in `concat_bytes!` would be ambiguous.
* Adding a type to represent C strings containing valid UTF-8 is not part of this feature.
* Support for a hypothetical `&Utf8CStr` may be explored in the future, should such a type be added to Rust.
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Refactor NLL constraint generation and most of polonius fact generation
As discussed in #118175, NLL "constraint generation" is only about liveness, but currently also contains legacy polonius fact generation. The latter is quite messy, and this PR cleans this up to prepare for its future removal:
- splits polonius fact generation out of NLL constraint generation
- merges NLL constraint generation to its more natural place, liveness
- extracts all of the polonius fact generation from NLLs apart from MIR typeck (as fact generation is somewhat in a single place there already, but should be cleaned up) into its own explicit module, with a single entry point instead of many.
There should be no behavior changes, and tests seem to behave the same as master: without polonius, with legacy polonius, with the in-tree polonius.
I've split everything into smaller logical commits for easier review, as it required quite a bit of code to be split and moved around, but it should all be trivial changes.
r? `@matthewjasper`
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chore: remove unused `PhantomData`
This PR removes an unused `PhantomData` in `FileItemTreeId`.
*Note:* I am not sure how this should be implemented, maybe as a type instead of a wrapper struct? I'd be happy to do so if needed 👍
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Improve error handling for top-level `let` statements
This commit addresses the issue of excessive and unrelated errors generated by top-level `let` statements. Now, only a single error is produced, indicating that `let` statements are invalid at the top level.
---
Fixes https://github.com/rust-lang/rust-analyzer/issues/14963.
While I'm not really sure if handling a particular case in a special manner is appropriate, it would be good to suppress the excessive number of annoying and unrelated errors.
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Before this fix, the lint had a false positive, namely when a reference
was taken to a field when the field operand implements a custom Drop.
The compiler will refuse to partially move a type that implements Drop,
because that would put the operand in a weird state. See added
regression test.
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Rollup of 3 pull requests
Successful merges:
- #118483 (rustdoc: `div.where` instead of fmt-newline class)
- #118486 (generic_const_exprs: suggest to add the feature, not use it)
- #118489 (Wesley is on vacation)
r? `@ghost`
`@rustbot` modify labels: rollup
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Allow `allow`ing `upper_case_acronyms` on enum variants
Fixes #7708
changelog: [`upper_case_acronyms`]: allow `allow`ing on enum variants
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Wesley is on vacation
OOF until Dec-11 🏖️
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generic_const_exprs: suggest to add the feature, not use it
Usually our missing feature messages look something like
```
= help: add `#![feature(inline_const)]` to the crate attributes to enable
```
However `generic_const_exprs` used a different verb. That's inconsistent and it also means playground won't add that nice hyperlink to add the feature automatically. So let's use the same verb as everywhere else.
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rustdoc: `div.where` instead of fmt-newline class
This is about equally readable, a lot more terse, and stops special-casing functions and methods.
```console
$ du -hs doc-old/ doc-new/
671M doc-old/
670M doc-new/
```
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explain a good reason for why LocalValue does not store the type of the local
As found out by `@lcnr` in https://github.com/rust-lang/rust/pull/112307, storing the type here can lead to subtle bugs when it gets out of sync with the MIR body. That's not the reason why the interpreter does it this way I think, but good thing we dodged that bullet. :)
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Change `SwitchTarget` representation in StableMIR
The new structure encodes its invariant, which reduces the likelihood of having an inconsistent representation. It is also more intuitive and user friendly.
I encapsulated the structure for now in case we decide to change it back.
### Notes:
1. I had to change the `Successors` type, since there's a conflict on the iterator type. We could potentially implement an iterator here, but I would prefer keeping it simple for now, and add a `successors_iter()` method if needed.
2. I removed `CoroutineDrop` for now since it we never create it. We can add it when we add support to other MIR stages.
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This commit addresses the issue of excessive and unrelated errors
generated by top-level `let` statements. Now, only a single error is
produced, indicating that `let` statements are invalid at the top level.
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`rustc_session` cleanups
r? `@bjorn3`
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Add `-Zfunction-return={keep,thunk-extern}` option
This is intended to be used for Linux kernel RETHUNK builds.
With this commit (optionally backported to Rust 1.73.0), plus a patched Linux kernel to pass the flag, I get a RETHUNK build with Rust enabled that is `objtool`-warning-free and is able to boot in QEMU and load a sample Rust kernel module.
Issue: https://github.com/rust-lang/rust/issues/116853.
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relationship of Exposed Provenance and Strict Provenance
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