warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_session\src\config.rs:2013:16
|
2013 | early_dcx: &mut EarlyDiagCtxt,
| ^^^^^^^^^^^^^^^^^^ help: consider changing to: `&EarlyDiagCtxt`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_ast_passes\src\ast_validation.rs:1555:11
|
1555 | this: &mut AstValidator<'_>,
| ^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&AstValidator<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_infer\src\infer\snapshot\fudge.rs:16:12
|
16 | table: &mut UnificationTable<'_, 'tcx, T>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&UnificationTable<'_, 'tcx, T>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_expand\src\expand.rs:961:13
|
961 | parser: &mut Parser<'a>,
| ^^^^^^^^^^^^^^^ help: consider changing to: `&Parser<'a>`
|
= warning: changing this function will impact semver compatibility
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_session\src\config.rs:2111:20
|
2111 | unstable_opts: &mut UnstableOptions,
| ^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&UnstableOptions`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: `peek` never called on `Peekable` iterator
--> compiler\rustc_session\src\utils.rs:130:13
|
130 | let mut args = std::env::args_os().map(|arg| arg.to_string_lossy().to_string()).peekable();
| ^^^^
|
= help: consider removing the call to `peekable`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_peekable
warning: `peek` never called on `Peekable` iterator
--> compiler\rustc_trait_selection\src\traits\error_reporting\suggestions.rs:4934:17
|
4934 | let mut bounds = pred.bounds.iter().peekable();
| ^^^^^^
|
= help: consider removing the call to `peekable`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_peekable
Add tidy check to error on new `Makefile`s in `tests/run-make`
We would like to strongly encourage new `run-make` tests to be written in Rust and not add any new `Makefile`-based `run-make` tests.
... even when the existential has the least RegionVid.
universal regions (of root universe) > placeholders > existentials
The previous behavior, that chooses the minimal RegionVid index, naturally prefers universal regions over others
because they always have the least RegionVids, but there was no guranteed ordering between placeholders and existentials.
Suggest correct path in include_bytes!
`include_bytes!` paths are relative, and I'm often not sure how nested is the `.rs` file that I'm editing, so I have to guess the number of `"../.."`. This change searches `..` and `../..` for the given file and offers corrected path as a suggestion.
I wasn't sure how to get the right span, and how to properly escape it.
```text
error: couldn't read src/file.txt: No such file or directory (os error 2)
--> src/main.rs:2:13
|
2 | let x = include_bytes!("file.txt");
| ^^^^^^^^^^^^^^^----------^
| |
| help: it's in a parent directory: `"../../file.txt"`
```
Fix casting between methods and function pointers by assigning a
secondary type id to methods with their concrete self so they can be
used as function pointers.
Let nils know about changes to target docs
i'll probably expand the paths and add a message after #121051 but i honestly don't expect that to land very soon lol, so it would be nice to get notified about changes already and watch what's happening there
approve this pr if you're cool
`num::NonZero::get` can be 1 transmute instead of 2
Just something I noticed in passing. No need for a `match` in here to call `unreachable_unchecked`, as `transmute_unchecked` will add the appropriate `llvm.assume` <https://rust.godbolt.org/z/W5hjeETnc>.
Delegation: fix ICE on wrong `Self` instantiation
fixes https://github.com/rust-lang/rust/issues/119921
fixes https://github.com/rust-lang/rust/issues/119919
There is no way to instantiate `Self` param for caller in delegation item if
1. callee is a trait method && callee contains `Self` param
2. delegation item isn't an associative item
In general, we can consider `Self` param as independent type param in these cases:
```rust
trait Trait {
fn foo(_: Option<&Self>) {...}
}
reuse Trait::foo;
// will be desugared to:
fn foo<T: Trait>(x: Option<&T>) { Trait::foo(x) }
```
But this requires early bound parameters support. For now, I suggest banning such cases to avoid ICE's.
r? ``@petrochenkov``
CFI: Fix drop and drop_in_place
Fix drop and drop_in_place by transforming self of drop and drop_in_place methods into a Drop trait objects.
This was split off from https://github.com/rust-lang/rust/pull/116404.
cc `@compiler-errors` `@workingjubilee`
Clarify atomic bit validity
The previous definition used the phrase "representation", which is ambiguous given the current state of memory model nomenclature in Rust. For integer types and for `AtomicPtr<T>`, the new wording clarifies that size and bit validity are guaranteed to match the corresponding native integer type/`*mut T`. For `AtomicBool`, the new wording clarifies that size, alignment, and bit validity are guaranteed to match `bool`.
Note that we use the phrase "size and alignment" rather than "layout" since the latter term also implies that the field types are the same. This isn't true - `AtomicXxx` doesn't store an `xxx`, but rather an `UnsafeCell<xxx>`. This distinction is important for some `unsafe` code, which needs to reason about the presence or absence of interior mutability in order to ensure that their code is sound (see e.g. https://github.com/google/zerocopy/issues/251).
Rework rmake support library API
### Take 1: Strongly-typed API
Context: https://github.com/rust-lang/rust/pull/122448#discussion_r1523774427
> My 2 cents: from my experience with writing similar "test DSLs", I would suggest to create these helpers as soon as possible in the process (basically the first time someone needs them, not only after N similar usages), and basically treat any imperative code in these high-level tests as a maintenance burden, basically making them as declarative as possible. Otherwise it might be a bit annoying to keep refactoring the tests later once such helpers are available.
>
> I would even discourage the arg method and create explicit methods for setting things like unpretty, the output file etc., but this might be more controversial, as it will make the invoked command-line arguments more opaque.
cc `@Kobzol` for the testing DSL suggestion.
Example:
```rs
let output = Rustc::new()
.input_file("main.rs")
.emit(&[EmitKind::Metadata])
.extern_("stable", &stable_path)
.output();
```
### Take 2: xshell-based macro API
Example:
```rs
let sh = Shell::new()?;
let stable_path = stable_path.to_string_lossy();
let output = cmd!(sh, "rustc main.rs --emit=metadata --extern stable={stable_path}").output()?;
```
### Take 3: Weakly-typed API with a few helper methods
```rs
let output = Rustc::new()
.input("main.rs")
.emit("metadata")
.extern_("stable", &stable_path)
.output();
```
