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Fix use suggestion span
Fixes #106954
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Fix unused_parens issue for higher ranked function pointers
fixes #105061
r? `@lcnr`
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Constify `TypeId` ordering impls
Tracking issue: #101871
Adding const ordering to `TypeId` allows rtti crates to optimize some casting scenarios (without transmuting to `u64`). This would also prevent these crates from breaking if the underlying type is changed from `u64` to something different.
Feature gate: `#![feature(const_cmp_type_id)]`
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fix: don't emit `E0711` if `staged_api` not enabled
Fixes #106589
Simple fix, added UI test.
As an aside, it seems a lot of features are susceptible to this, `E0711` stands out to me because it's perma-unstable and we are effectively exposing an implementation detail.
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ConstBlocks are poly if their substs are poly
r? `@BoxyUwU`
fixes #106926
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r=GuillaumeGomez
rustdoc: remove redundant item kind class from `.item-decl > pre`
This class originated in the very first commit of `rustdoc_ng`, and was used to add a color border around the item decl based on its kind.
https://github.com/rust-lang/rust/blob/4fd061c426902b0904c65e64a3780b21f9ab3afb/src/rustdoc_ng/html/static/main.css#L102-L106
The item decl no longer has a border, and there aren't any kind-specific styles in modern rustdoc's rendering of this UI item.
Most of this PR is updating test cases so that they use `item-decl` to find the `<pre>` tag instead of relying on the fact that the class name had `rust {kind}` in it while other `<pre>` tags only had class `rust`.
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make error emitted on `impl &Trait` nicer
Fixes #106694
Turned out to be simpler than I thought, also added UI test.
Before: ([playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=9bda53271ef3a8886793cf427b8cea91))
```text
error: expected one of `:`, ``@`,` or `|`, found `)`
--> src/main.rs:2:22
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2 | fn foo(_: impl &Trait) {}
| ^ expected one of `:`, ``@`,` or `|`
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= note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
help: if this is a parameter name, give it a type
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2 | fn foo(_: impl Trait: &TypeName) {}
| ~~~~~~~~~~~~~~~~
help: if this is a type, explicitly ignore the parameter name
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2 | fn foo(_: impl _: &Trait) {}
| ++
error: expected one of `!`, `(`, `)`, `,`, `?`, `for`, `~`, lifetime, or path, found `&`
--> src/main.rs:2:16
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2 | fn foo(_: impl &Trait) {}
| -^ expected one of 9 possible tokens
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| help: missing `,`
error: expected one of `!`, `(`, `,`, `=`, `>`, `?`, `for`, `~`, lifetime, or path, found `&`
--> src/main.rs:3:11
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3 | fn bar<T: &Trait>(_: T) {}
| ^ expected one of 10 possible tokens
```
After:
```text
error: expected a trait, found type
--> <anon>:2:16
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2 | fn foo(_: impl &Trait) {}
| -^^^^^
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| help: consider removing the indirection
error: expected a trait, found type
--> <anon>:3:11
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3 | fn bar<T: &Trait>(_: T) {}
| -^^^^^
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| help: consider removing the indirection
```
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suggestion for attempted integer identifier in patterns
Fixes #106552
Implemented a suggestion on `E0005` that occurs when no bindings are present and the pattern is a literal integer.
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Improve a TAIT error and add an error code plus documentation
cc https://github.com/rust-lang/rust/issues/106858
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check -Z query-dep-graph is enabled if -Z dump-dep-graph (#106736)
PR to solve #106736, r? `@cjgillot`
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Heuristically undo path prefix mappings.
Because the compiler produces better diagnostics if it can find the source of (potentially remapped) dependencies.
The new test fails without the other changes in this PR. Let me know if you have better suggestions for the test directory. I moved the existing remapping test to be in the same location as the new one.
Some more context: I'm exploring running UI tests with remapped paths by default in https://github.com/rust-lang/rust/pull/105924 and this was one of the issues discovered.
This may also be useful in the context of https://github.com/rust-lang/rfcs/pull/3127 ("New rustc and Cargo options to allow path sanitisation by default").
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Make the inlining destination a Local.
Fixes https://github.com/rust-lang/rust/issues/106141
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Emit only one nbsp error per file
Fixes #106101.
See https://github.com/rust-lang/rust/issues/106098 for an explanation of how someone would end up with a large number of these nbsp characters in their source code, which is why I think rustc needs to handle this specific case in a friendlier way.
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Rollup of 5 pull requests
Successful merges:
- #106888 (Add tidy check to ensure that rustdoc GUI tests start with a small description)
- #106896 (suggest `is_empty` for collections when casting to `bool`)
- #106900 (Fix regression in `unused_braces` with macros)
- #106906 (remove redundant clones)
- #106909 (Only suggest adding type param if path being resolved was a type)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Only suggest adding type param if path being resolved was a type
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Fix regression in `unused_braces` with macros
Fixes #106899
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suggest `is_empty` for collections when casting to `bool`
Fixes #106883
Matches on slices, `String` and `str`. It would be nice to do this with something like `Deref<Target=str>` as well, but AFAIK it's not possible in this part of the compiler.
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Add tidy check to ensure that rustdoc GUI tests start with a small description
The first commit comes from https://github.com/rust-lang/rust/pull/106865 to prevent CI to fail.
This PR adds a tidy check to enforce having a small description at the top of the GUI test. Although the format is made to be as easy as possible to read, it's not always obvious what a test is actually checking. I think enforcing this will make it easier for us to come back on these tests if needed.
r? `@notriddle`
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Simplify manual ptr arithmetic in slice::Iter with ptr_sub
The old code was introduced in #61885, which predates the ptr_sub method and underlying intrinsic. The codegen test still passes.
r? `@scottmcm`
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r=estebank,lcnr
Consolidate two almost duplicated fn info extraction routines
Moves `extract_callable_info` up to trait selection, because it was being (almost) duplicated fully there for similar diagnostic purposes. This also generalizes the diagnostics we can give slightly (see UI test).
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Add regression test for #42114
Closes #42114
r? compiler-errors
Signed-off-by: Yuki Okushi <jtitor@2k36.org>
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Add regression test for #92157
Closes #92157
r? compiler-errors
Signed-off-by: Yuki Okushi <jtitor@2k36.org>
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Add explanation comment for GUI test
r? `@notriddle`
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Suggestion for type mismatch when we need a u8 but the programmer wrote a char literal
Today Rust just points out that we have a char and we need a u8, but if I wrote 'A' then I could fix this by just writing b'A' instead. This code should detect the case where we're about to report a type mismatch of this kind, and the programmer wrote a char literal, and the char they wrote is ASCII, so therefore just prefixing b to make a byte literal will do what they meant.
I have definitely written this mistake more than once, it's not difficult to figure out what to do, but the compiler might as well tell us anyway.
I provided a test with two simple examples where the suggestion is appropriate, and one where it is not because the char literal is not ASCII, showing that the suggestion is only triggered in the former cases.
I have contributed only a small typo doc fix before, so this is my first substantive rustc change.
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fix: misleading "add dyn keyword before derive macro" suggestion
Fixes #106071
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suggested by Nilstrieb
Co-authored-by: nils <48135649+Nilstrieb@users.noreply.github.com>
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Signed-off-by: Yuki Okushi <jtitor@2k36.org>
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Signed-off-by: Yuki Okushi <jtitor@2k36.org>
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This class originated in the very first commit of `rustdoc_ng`, and was used
to add a color border around the item decl based on its kind.
https://github.com/rust-lang/rust/blob/4fd061c426902b0904c65e64a3780b21f9ab3afb/src/rustdoc_ng/html/static/main.css#L102-L106
The item decl no longer has a border, and there aren't any
kind-specific styles in modern rustdoc's rendering of this UI item.
Most of this commit is updating test cases so that they use `item-decl` to
find the `<pre>` tag instead of relying on the fact that the class name
had `rust {kind}` in it while other `<pre>` tags only had class `rust`.
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r=GuillaumeGomez
rustdoc: remove `docblock` class from notable trait popover
This commit builds on b72de9be74dd5ac1d8b23d5ece03a7690274a14c, which removes the `docblock` class from the All Items page, and 9457380ac902db3febf92077c5b645db55998ad4, which removes the `docblock` class from the item decl.
Fixes #92974
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Deprioritize fulfillment errors that come from expansions.
Fixes (part of?) #69455
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Fix `unused_braces` on generic const expr macro call
Fixes #106545
`@rustbot` label +A-const-generics +A-lint
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