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This reverts commit 459364b971c717462e99848ceba3eb545867ee33, reversing
changes made to 62ba9969a4969574716e52dac1a28a11202c0ea2.
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comparisons (#14646)"
This reverts commit 551870df96213c423c94a012c1981fc0cdc06fc2, reversing
changes made to 3927a61a546b0f134b3790d66ef73f1960e8bc8b.
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If there are more than one dereference (there is one corresponding
matched with a borrow in any case), consider that the argument might
point to a place expression, which is the safest choice.
Also, use an appropriate number of dereferences in suggestions involving
arguments using themselves multiple dereferences.
Fixes rust-lang/rust-clippy#15166
changelog: [`swap_with_temporary`]: fix false positive leading to
different semantics being suggested, and use the right number of
dereferences in suggestion
r? y21
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### Summary Notes
-
[beta-nomination](https://github.com/rust-lang/rust-clippy/pull/15172#issuecomment-3016752569)
by [samueltardieu](https://github.com/samueltardieu)
*Managed by `@rustbot`—see
[help](https://forge.rust-lang.org/triagebot/note.html) for details*
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Key changes include:
- Removal of the word "syntax" from the lint message. More accurately,
it could have been something like "syntax group" or "syntax
category", but avoiding it completely is easier.
- The primary lint message now reflects exactly which mismatch is
occurring, instead of trying to be general. A new `help` line is
general across the mismatch kinds.
- Suggestions have been reduced to be more minimal, no longer also
changing non-idiomatic but unrelated aspects.
- Suggestion text no longer mentions changes when those changes don't
occur in that specific suggestion.
(cherry picked from commit 553074431875701f66107049339dc1e67f0cdeba)
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Allow storing `format_args!()` in variable
Fixes https://github.com/rust-lang/rust/issues/92698
Tracking issue for super let: https://github.com/rust-lang/rust/issues/139076
Tracking issue for format_args: https://github.com/rust-lang/rust/issues/99012
This change allows:
```rust
let name = "world";
let f = format_args!("hello {name}!"); // New: Store format_args!() for later!
println!("{f}");
```
This will need an FCP.
This implementation makes use of `super let`, which is unstable and might not exist in the future in its current form. However, it is entirely reasonable to assume future Rust will always have _a_ way of expressing temporary lifetimes like this, since the (stable) `pin!()` macro needs this too. (This was also the motivation for merging https://github.com/rust-lang/rust/pull/139114.)
(This is a second version of https://github.com/rust-lang/rust/pull/139135)
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r=lcnr,traviscross
Stabilize `feature(generic_arg_infer)`
Fixes rust-lang/rust#85077
r? lcnr
cc ````@rust-lang/project-const-generics````
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One clippy test is `no_core` and needs to have `MetaSized` and
`PointeeSized` added to it.
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Unimplement unsized_locals
Implements https://github.com/rust-lang/compiler-team/issues/630
Tracking issue here: https://github.com/rust-lang/rust/issues/111942
Note that this just removes the feature, not the implementation, and does not touch `unsized_fn_params`. This is because it is required to support `Box<dyn FnOnce()>: FnOnce()`.
There may be more that should be removed (possibly in follow up prs)
- the `forget_unsized` function and `forget` intrinsic.
- the `unsized_locals` test directory; I've just fixed up the tests for now
- various codegen support for unsized values and allocas
cc ``@JakobDegen`` ``@oli-obk`` ``@Noratrieb`` ``@programmerjake`` ``@bjorn3``
``@rustbot`` label F-unsized_locals
Fixes rust-lang/rust#79409
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clippy-subtree-update
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r=traviscross,jieyouxu
Add a new `mismatched-lifetime-syntaxes` lint
The lang-team [discussed this](https://hackmd.io/nf4ZUYd7Rp6rq-1svJZSaQ) and I attempted to [summarize](https://github.com/rust-lang/rust/pull/120808#issuecomment-2701863833) their decision. The summary-of-the-summary is:
- Using two different kinds of syntax for elided lifetimes is confusing. In rare cases, it may even [lead to unsound code](https://github.com/rust-lang/rust/issues/48686)! Some examples:
```rust
// Lint will warn about these
fn(v: ContainsLifetime) -> ContainsLifetime<'_>;
fn(&'static u8) -> &u8;
```
- Matching up references with no lifetime syntax, references with anonymous lifetime syntax, and paths with anonymous lifetime syntax is an exception to the simplest possible rule:
```rust
// Lint will not warn about these
fn(&u8) -> &'_ u8;
fn(&'_ u8) -> &u8;
fn(&u8) -> ContainsLifetime<'_>;
```
- Having a lint for consistent syntax of elided lifetimes will make the [future goal](https://github.com/rust-lang/rust/issues/91639) of warning-by-default for paths participating in elision much simpler.
---
This new lint attempts to accomplish the goal of enforcing consistent syntax. In the process, it supersedes and replaces the existing `elided-named-lifetimes` lint, which means it starts out life as warn-by-default.
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Use the informative error as the main const eval error message
r? `@RalfJung`
I only did the minimal changes necessary to the const eval error machinery. I'd prefer not to mix test changes with refactorings 😆
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Clippy subtree update
r? `@Manishearth`
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Stabilize feature `result_flattening`
Stabilizes the `Result::flatten` method
## Implementations
- [x] Implementation `Result::flatten`: https://github.com/rust-lang/rust/pull/70140
- [x] Implementation `const` `Result::flatten`: https://github.com/rust-lang/rust/pull/130692
- [x] Update stabilization attribute macros (this PR)
## Stabilization process
- [x] Created this PR [suggested](https://github.com/rust-lang/rust/issues/70142#issuecomment-2885044548) by ``@RalfJung``
- [x] FCP (haven't found any, is it applicable here?)
- [ ] Close issue rust-lang/rust#70142
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rustc_on_unimplemented cleanups
Addresses some of the fixmes from https://github.com/rust-lang/rust/pull/139091 and https://github.com/rust-lang/rust/pull/140307.
- switch from `_Self` to `Self` in library
- properly validate that arguments in the `on` filter and the format strings are actually valid
See https://github.com/rust-lang/rustc-dev-guide/pull/2357 for the relevant documentation.
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clippy-subtree-update
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rustc_on_unimplemented
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clippy-subtree-update
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Implement `Iterator::last` for `vec::IntoIter`
Avoid iterating everything when we have random access to the last element.
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ismailarilik:handle-potential-query-instability-lint-for-rustc-middle, r=oli-obk
Handle `rustc_middle` cases of `rustc::potential_query_instability` lint
This PR removes `#![allow(rustc::potential_query_instability)]` line from [`compiler/rustc_middle/src/lib.rs`](https://github.com/rust-lang/rust/blob/master/compiler/rustc_middle/src/lib.rs#L29) and converts `FxHash{Map,Set}` types into `FxIndex{Map,Set}` to suppress lint errors.
A somewhat tracking issue: https://github.com/rust-lang/rust/issues/84447
r? `@compiler-errors`
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clippy-subtree-update
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clippy-subtree-update
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clippy-subtree-update
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For macros that are implemented on the compiler, we do *not* mention the `-Zmacro-backtrace` flag. This includes `derive`s and standard macros.
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This test only makes sense to run in the Clippy repo
In the Rust repo the name of the host_compiler is dev, not nightly
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clippy-subtree-update
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The end goal is to eliminate `Map` altogether.
I added a `hir_` prefix to all of them, that seemed simplest. The
exceptions are `module_items` which became `hir_module_free_items` because
there was already a `hir_module_items`, and `items` which became
`hir_free_items` for consistency with `hir_module_free_items`.
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```
error[E0610]: `{integer}` is a primitive type and therefore doesn't have fields
--> $DIR/attempted-access-non-fatal.rs:7:15
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LL | let _ = 2.l;
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help: if intended to be a floating point literal, consider adding a `0` after the period and a `f64` suffix
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LL - let _ = 2.l;
LL + let _ = 2.0f64;
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```
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Co-authored-by: Guillaume Gomez <guillaume1.gomez@gmail.com>
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