| Age | Commit message (Collapse) | Author | Lines |
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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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`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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On Fn arg mismatch for a fn path, suggest a closure
When encountering a fn call that has a path to another fn being passed in, where an `Fn` impl is expected, and the arguments differ, suggest wrapping the argument with a closure with the appropriate arguments.
The last `help` is new:
```
error[E0631]: type mismatch in function arguments
--> $DIR/E0631.rs:9:9
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LL | fn f(_: u64) {}
| ------------ found signature defined here
...
LL | foo(f);
| --- ^ expected due to this
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| required by a bound introduced by this call
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= note: expected function signature `fn(usize) -> _`
found function signature `fn(u64) -> _`
note: required by a bound in `foo`
--> $DIR/E0631.rs:3:11
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LL | fn foo<F: Fn(usize)>(_: F) {}
| ^^^^^^^^^ required by this bound in `foo`
help: consider wrapping the function in a closure
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LL | foo(|arg0: usize| f(/* u64 */));
| +++++++++++++ +++++++++++
```
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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.
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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Enable `link-arg` link kind inside of `#[link]` attribute
https://github.com/rust-lang/rust/issues/99427#issuecomment-1234443468
> ...
> This would help to make `link-arg` usable in `#[link]` attributes and e.g. wrap libc and libgcc into a group (*) in the libc crate like
>
> ```
> #[link(kind = "link-arg", name = "--start-group")]
> #[link(kind = "static", name = "c")]
> #[link(kind = "static", name = "gcc")]
> #[link(kind = "link-arg", name = "--end-group")]
> ```
>
> (*) to address cyclic dependencies between them
>
> This is an analogue of CMake's LINKER: prefix (https://cmake.org/cmake/help/git-stage/command/target_link_options.html#handling-compiler-driver-differences), and was discussed as a possible future extension in the link modifier RFC (https://github.com/rust-lang/rfcs/blob/master/text/2951-native-link-modifiers.md#support-linkarg--string-in-addition-to-the-modifiers).
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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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- Implement link-arg as an attribute
- Apply suggestions from review
- Co-authored-by: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
- Add unstable book entry
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Add thinlto support to codegen, assembly and coverage tests
Using `--emit=llvm-ir` with thinlto usually result in multiple IR files.
Resolve test case failure issue reported in #113923.
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r=GuillaumeGomez
rustdoc: remove small from `small-section-header`
There's no such thing as a big section header, so I don't know why the name was used.
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Tweak message on ADT with private fields building
When trying to create an inaccessible ADT due to private fields, handle the case when no fields were passed.
```
error: cannot construct `Foo` with struct literal syntax due to private fields
--> $DIR/issue-76077.rs:8:5
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LL | foo::Foo {};
| ^^^^^^^^
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= note: private field `you_cant_use_this_field` that was not provided
```
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rustdoc-search: allow spaces around `::` in path query
This restriction made sense back when spaces separated function parameters, but now that they separate path components, there's no real ambiguity any more.
Additionally, the Rust language allows it.
The other two commits are misc code cleanup.
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Alphabetical order is nicer than random order.
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Fix `PartialEq` args when `#[const_trait]` is enabled
This is based off of your PR that enforces effects on all methods, so just see the last commits.
r? fee1-dead
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There's no such thing as a big section header, so I don't know why the
name was used.
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When encountering a fn call that has a path to another fn being passed
in, where an `Fn` impl is expected, and the arguments differ, suggest
wrapping the argument with a closure with the appropriate arguments.
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Use the same approach used for match arm patterns.
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When encountering match arm (pat if expr) => {}, recover and suggest removing parentheses. Fix #100825.
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likely to appear in for head or match arm
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When trying to create an inaccessible ADT due to private fields, handle
the case when no fields were passed.
```
error: cannot construct `Foo` with struct literal syntax due to private fields
--> $DIR/issue-76077.rs:8:5
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LL | foo::Foo {};
| ^^^^^^^^
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= note: private field `you_cant_use_this_field` that was not provided
```
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This way, most of the parsing code doesn't need to be designed to handle
it, since they should always be treated exactly the same anyhow.
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This is already covered by the normal unexpected char path.
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This restriction made sense back when spaces separated function
parameters, but now that they separate path components, there's
no real ambiguity any more.
Additionally, the Rust language allows it.
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ConstProp: Correctly remove const if unknown value assigned to it.
Closes #118328
The problematic sequence of MIR is:
```rust
_1 = const 0_usize;
_1 = const _; // This is an associated constant we can't know before monomorphization.
_0 = _1;
```
1. When `ConstProp::visit_assign` happens on `_1 = const 0_usize;`, it records that `0x0usize` is the value for `_1`.
2. Next `visit_assign` happens on `_1 = const _;`. Because the rvalue `.has_param()`, it can't be const evaled.
3. Finaly, `visit_assign` happens on `_0 = _1;`. Here it would think the value of `_1` was `0x0usize` from step 1.
The solution is to remove consts when checking the RValue fails, as they may have contained values that should now be invalidated, as that local was overwritten.
This should probably be back-ported to beta. Stable is more iffy, as it's gone unidentified since 1.70, so I only think it's worthwhile if there's another reason for a 1.74.1 release anyway.
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Print list of missing target features when calling a function with target features outside an unsafe block
Fixes https://github.com/rust-lang/rust/issues/108680
Supersedes https://github.com/rust-lang/rust/pull/109710. I used the same wording for the messages, but the implementation is different.
r? `@est31`
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Suggest `let` or `==` on typo'd let-chain
When encountering a bare assignment in a let-chain, suggest turning the
assignment into a `let` expression or an equality check.
```
error: expected expression, found `let` statement
--> $DIR/bad-if-let-suggestion.rs:5:8
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LL | if let x = 1 && i = 2 {}
| ^^^^^^^^^
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= note: only supported directly in conditions of `if` and `while` expressions
help: you might have meant to continue the let-chain
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LL | if let x = 1 && let i = 2 {}
| +++
help: you might have meant to compare for equality
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LL | if let x = 1 && i == 2 {}
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```
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Add `never_patterns` feature gate
This PR adds the feature gate and most basic parsing for the experimental `never_patterns` feature. See the tracking issue (https://github.com/rust-lang/rust/issues/118155) for details on the experiment.
`@scottmcm` has agreed to be my lang-team liaison for this experiment.
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Rollup of 7 pull requests
Successful merges:
- #116839 (Implement thread parking for xous)
- #118265 (remove the memcpy-on-equal-ptrs assumption)
- #118269 (Unify `TraitRefs` and `PolyTraitRefs` in `ValuePairs`)
- #118394 (Remove HIR opkinds)
- #118398 (Add proper cfgs in std)
- #118419 (Eagerly return `ExprKind::Err` on `yield`/`await` in wrong coroutine context)
- #118422 (Fix coroutine validation for mixed panic strategy)
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix a typo in a `format_args!` note
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r=compiler-errors
Fix the issue of suggesting unwrap/expect for shorthand field
Fixes #118145
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Dont suggest `!` for path in function call if it has generic args
Fixes #118335
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Fix coroutine validation for mixed panic strategy
Validation introduced in #113124 allows `UnwindAction::Continue` and `TerminatorKind::Resume` to occur only in functions with ABI that can unwind. The function ABI depends on the panic strategy, which can vary across crates.
Usually MIR is built and validated in the same crate. The coroutine drop glue thus far was an exception. As a result validation could fail when mixing different panic strategies.
Avoid the problem by executing `AbortUnwindingCalls` along with the validation.
Fixes #116953.
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Eagerly return `ExprKind::Err` on `yield`/`await` in wrong coroutine context
This PR does 2 things:
1. Refuses to lower `.await` or `yield` when we are outside of the right coroutine context for the operator. Instead, we lower to `hir::ExprKind::Err`, to silence subsequent redundant errors.
2. Reworks a bit of the span tracking in `LoweringContext` to fix a bad span when we have something like `let x = [0; async_fn().await]` where the `await` is inside of an anon const. The span for the "item" still kinda sucks, since it overlaps with the `await` span, but at least it's accurate.
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add track_caller for arith ops
Fixes #114814
`#[track_caller]` is works, r? `@scottmcm`
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