Adjust UI tests for `unit_bindings` lint
- Explicitly annotate `let x: () = expr;` where `x` has unit type, or remove the unit binding to leave only `expr;` instead.
- Use `let () = init;` or `let pat = ();` where appropriate.
- Fix disjoint-capture-in-same-closure test which wasn't actually testing a closure: `tests/ui/closures/2229_closure_analysis/run_pass/disjoint-capture-in-same-closure.rs`.
Note that unfortunately there's *a lot* of UI tests, there are a couple of places where I may have left something like `let (): ()` (this is not needed but is left over from an ealier version of the lint) which is bad style.
This PR is to help with the `unit_bindings` lint at #112380.
This feature extends rustdoc to support the syntax that most users will
naturally attempt to use to search for diverging functions.
Part of #60485
It's already possible to do this search with `primitive:never`, but
that's not what the Rust language itself uses, so nobody will try it if
they aren't told or helped along.
- Create `Answer` type that is not just a type alias of `Result`
- Remove a usage of `map_layouts` to make the code easier to read
- Don't hide errors related to Unknown Layout when computing transmutability
Suggest using `ptr::null_mut` when user provided `ptr::null` to a function expecting `ptr::null_mut`
```
error[E0308]: mismatched types
--> $DIR/ptr-null-mutability-suggestions.rs:9:24
|
LL | expecting_null_mut(ptr::null());
| ------------------ ^^^^^^^^^^^
| | |
| | types differ in mutability
| | help: consider using `core::ptr::null_mut` instead: `core::ptr::null_mut()`
| arguments to this function are incorrect
|
= note: expected raw pointer `*mut u8`
found raw pointer `*const _`
note: function defined here
--> $DIR/ptr-null-mutability-suggestions.rs:6:4
|
LL | fn expecting_null_mut(_: *mut u8) {}
| ^^^^^^^^^^^^^^^^^^ ----------
```
Closes#85184.
- Either explicitly annotate `let x: () = expr;` where `x` has unit
type, or remove the unit binding to leave only `expr;` instead.
- Fix disjoint-capture-in-same-closure test
To reproduce the changes in this commit locally:
- Run `./x test tidy` and remove all the output files not associated
with a test file anymore, as reported by tidy.
- Run `./x test tests/mir-opt --bless` to generate the new outputs.
Dont compute `opt_suggest_box_span` span for TAIT
Fixes#112434
Also a couple more commits on top, pruning some dead code and fixing another weird suggestion encountered in the above issue.
iat selection: normalize self ty & completely erase bound vars
Erase bound vars (most notably late-bound regions) irrespective of their binding level instead of just at the innermost one.
Fixes#111404.
rustdoc: re-elide cross-crate default trait-object lifetime bounds
Hide trait-object lifetime bounds (re-exported from an external crate) if they coincide with [their default](https://doc.rust-lang.org/reference/lifetime-elision.html#default-trait-object-lifetimes).
Partially addresses #44306. Follow-up to #103885. [Zulip discussion](https://rust-lang.zulipchat.com/#narrow/stream/266220-rustdoc/topic/clean_middle_ty.3A.20I.20need.20to.20add.20a.20parameter/near/307143097).
Most notably, if `std` exported something from `core` containing a type like `Box<dyn Fn()>`, then it would now be rendered as `Box<dyn Fn(), Global>` instead of `Box<dyn Fn() + 'static, Global>` (hiding `+ 'static` as it is the default in this case). Showing `Global` here is a separate issue, #80379, which is on my agenda.
Note that I am not really fond of the fact that I had to add a parameter to such a widely used function (30+ call sites) to address such a niche bug.
CC `@GuillaumeGomez`
Requesting a review from a compiler contributor or team member as recommended on Zulip.
r? compiler
---
`@rustbot` label T-compiler T-rustdoc A-cross-crate-reexports
Instead of linking to the old Rust Reference site on static.rust-lang.org,
link to the current website doc.rust-lang.org/stable/reference instead in
diagnostic about incorrect literals.
Adjust span labels for `HIDDEN_GLOB_REEXPORTS`
Addresses https://github.com/rust-lang/rust/pull/111378#issuecomment-1581226063.
### Before This PR
The possibility that the private item comes before the glob re-export was not account for, causing the span label messages to say "but private item here shadows it" before "the name `Foo` in the type namespace is supposed to be publicly re-exported here".
### After This PR
```rust
warning: private item shadows public glob re-export
--> $DIR/hidden_glob_reexports.rs:9:5
|
LL | struct Foo;
| ^^^^^^^^^^^ the private item here shadows the name `Foo` in the type namespace
...
LL | pub use self::inner::*;
| -------------- but it is supposed to be publicly re-exported here
|
= note: `#[warn(hidden_glob_reexports)]` on by default
warning: private item shadows public glob re-export
--> $DIR/hidden_glob_reexports.rs:27:9
|
LL | pub use self::inner::*;
| -------------- the name `Foo` in the type namespace is supposed to be publicly re-exported here
LL |
LL | use self::other::Foo;
| ^^^^^^^^^^^^^^^^ but the private item here shadows it
```
Uplift `clippy::cmp_nan` lint
This PR aims at uplifting the `clippy::cmp_nan` lint into rustc.
## `invalid_nan_comparisons`
~~(deny-by-default)~~ (warn-by-default)
The `invalid_nan_comparisons` lint checks comparison with `f32::NAN` or `f64::NAN` as one of the operand.
### Example
```rust,compile_fail
let a = 2.3f32;
if a == f32::NAN {}
```
### Explanation
NaN does not compare meaningfully to anything – not even itself – so those comparisons are always false.
-----
Mostly followed the instructions for uplifting a clippy lint described here: https://github.com/rust-lang/rust/pull/99696#pullrequestreview-1134072751
`@rustbot` label: +I-lang-nominated
r? compiler
Ignore tests that hang in new solver
This makes it easier to run `--compare-mode=next-solver`, and we can revisit these tests later to find out how to make them less overflowy 😅
r? `@lcnr`
Change format of rustdoc-js tests by putting query and correction directly alongside the expected values
As I was working on fixing merge conflicts in #108537, I faced quite a big issue when trying to update the `rustdoc-js*` tests. To make it much simpler, this PR moves the `query` and `correction` directly alongside the expected data so now we know what is the query that is being run without needing to add comments or going back to the top of the file.
r? ```@notriddle```
expand: Change how `#![cfg(FALSE)]` behaves on crate root
Previously it removed all other attributes from the crate root.
Now it removes only attributes below itself (during both regular expansion and pre-configuration).
So it becomes possible to configure some global crate properties even for fully unconfigured crates.
Fixes https://github.com/rust-lang/rust/issues/104633
Part of https://github.com/rust-lang/rust/issues/110082
increase the accuracy of effective visibilities calculation
Effective visibilities are calculated lazily due to performance restrictions. Therefore
- crate should be walked at least 1 time in `compute_effective_visibilities` pass
- Impl's should always be in the effective visibilities table
to ensure that the table is filled in correctly.
r? `@petrochenkov`
Previously it removed all other attributes from the crate root.
Now it removes only attributes below itself.
So it becomes possible to configure some global crate properties even for fully unconfigured crates.
Support float-like tuple indices in offset_of!()
Supports invocations like `offset_of!((((), ()), ()), 0.0)`. This `0.0` gets tokenized as float literal, so it has to be broken up again.
The code that did the breaking up was returning a finished `Expr`, while we need a `Ident`, so this PR splits up the `parse_expr_tuple_field_access_float` function into:
* a function that breaks up the float literal (similar to `TokenKind::break_two_token_op`, but we do access the parser during this splitting operation, so we keep it as an inherent function on the parser)
* and a function that constructs an `Expr` from it
The former we can then re-use in `offset_of` parsing. The edge cases especially involving whitespaces are tricky so this adds a bunch of new tests as well.
fixes#112204
Rollup of 3 pull requests
Successful merges:
- #112260 (Improve document of `unsafe_code` lint)
- #112429 ([rustdoc] List matching impls on type aliases)
- #112442 (Deduplicate identical region constraints in new solver)
r? `@ghost`
`@rustbot` modify labels: rollup
Deduplicate identical region constraints in new solver
the new solver doesn't track whether we've already proven a goal like the fulfillment context's obligation forest does, so we may be instantiating a canonical response (and specifically, its nested region obligations) quite a few times.
This may lead to exponentially gathering up identical region constraints for things like auto traits, so let's deduplicate region constraints when in `compute_external_query_constraints`.
r? ``@lcnr``
Uplift `clippy::undropped_manually_drops` lint
This PR aims at uplifting the `clippy::undropped_manually_drops` lint.
## `undropped_manually_drops`
(warn-by-default)
The `undropped_manually_drops` lint check for calls to `std::mem::drop` with a value of `std::mem::ManuallyDrop` which doesn't drop.
### Example
```rust
struct S;
drop(std::mem::ManuallyDrop::new(S));
```
### Explanation
`ManuallyDrop` does not drop it's inner value so calling `std::mem::drop` will not drop the inner value of the `ManuallyDrop` either.
-----
Mostly followed the instructions for uplifting an clippy lint described here: https://github.com/rust-lang/rust/pull/99696#pullrequestreview-1134072751
`@rustbot` label: +I-lang-nominated
r? compiler
-----
For Clippy:
changelog: Moves: Uplifted `clippy::undropped_manually_drops` into rustc
Write to stdout if `-` is given as output file
With this PR, if `-o -` or `--emit KIND=-` is provided, output will be written to stdout instead. Binary output (those of type `obj`, `llvm-bc`, `link` and `metadata`) being written this way will result in an error unless stdout is not a tty. Multiple output types going to stdout will trigger an error too, as they will all be mixded together.
This implements https://github.com/rust-lang/compiler-team/issues/431
The idea behind the changes is to introduce an `OutFileName` enum that represents the output - be it a real path or stdout - and to use this enum along the code paths that handle different output types.
Misc HIR typeck type mismatch tweaks
These are all intended to improve #112104, but I couldn't get it to actually suggest adding `as_ref` to the LHS of the equality expr without some hacks that I may play around with some more.
Each commit's title should explain what it's doing except for perhaps the last one, which addresses the bogus suggestion on #112104 itself.
Do `fix_*_builtin_expr` hacks on the writeback results
During writeback, we do `fix_{scalar,index}_builtin_expr` so that during MIR build we generate built-in MIR instructions instead of method calls for certain built-in arithmetic operations. We do this by checking the types of these built-in operations are scalar types, and remove the method def-id to essentially mark the operation as built-in and not "overloaded".
For lazy norm and the new trait solver, this is a problem, because we don't actually normalize all the types we end up seeing in the typeck results until they're copied over writeback's copy of the typeck results. To fix this, delay these fixup calls until after this normalization has been done.
This doesn't affect the old trait solver, but does simplify the code a bit IMO, since we can remove a few sets of calls to `resolve_vars_if_possible` and some `borrow_mut`s.
r? `@lcnr`
Rollup of 9 pull requests
Successful merges:
- #112034 (Migrate `item_opaque_ty` to Askama)
- #112179 (Avoid passing --cpu-features when empty)
- #112309 (bootstrap: remove dependency `is-terminal`)
- #112388 (Migrate GUI colors test to original CSS color format)
- #112389 (Add a test for #105709)
- #112392 (Fix ICE for while loop with assignment condition with LHS place expr)
- #112394 (Remove accidental comment)
- #112396 (Track more diagnostics in `rustc_expand`)
- #112401 (Don't `use compile_error as print`)
r? `@ghost`
`@rustbot` modify labels: rollup
Removed use of iteration through a HashMap/HashSet in rustc_incremental and replaced with IndexMap/IndexSet
This allows for the `#[allow(rustc::potential_query_instability)]` in rustc_incremental to be removed, moving towards fixing #84447 (although a LOT more modules have to be changed to fully resolve it). Only HashMaps/HashSets that are being iterated through have been modified (although many structs and traits outside of rustc_incremental had to be modified as well, as they had fields/methods that involved a HashMap/HashSet that would be iterated through)
I'm making a PR for just 1 module changed to test for performance regressions and such, for future changes I'll either edit this PR to reflect additional modules being converted, or batch multiple modules of changes together and make a PR for each group of modules.
Remember names of `cfg`-ed out items to mention them in diagnostics
# Examples
## `serde::Deserialize` without the `derive` feature (a classic beginner mistake)
I had to slightly modify serde so that it uses explicit re-exports instead of a glob re-export. (Update: a serde PR was merged that adds the manual re-exports)
```
error[E0433]: failed to resolve: could not find `Serialize` in `serde`
--> src/main.rs:1:17
|
1 | #[derive(serde::Serialize)]
| ^^^^^^^^^ could not find `Serialize` in `serde`
|
note: crate `serde` has an item named `Serialize` but it is inactive because its cfg predicate evaluated to false
--> /home/gh-Nilstrieb/.cargo/registry/src/index.crates.io-6f17d22bba15001f/serde-1.0.160/src/lib.rs:343:1
|
343 | #[cfg(feature = "serde_derive")]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
344 | pub use serde_derive::{Deserialize, Serialize};
| ^^^^^^^^^
= note: the item is gated behind the `serde_derive` feature
= note: see https://doc.rust-lang.org/cargo/reference/features.html for how to activate a crate's feature
```
(the suggestion is not ideal but that's serde's fault)
I already tested the metadata size impact locally by compiling the `windows` crate without any features. `800k` -> `809k`
r? `@ghost`
This patch just removes the `#[rustc_coinductive]` annotation from `BikeshedIntrinsicFrom` and flips the related tests to `check-fail`. Once an FCP for setting the annotation on the trait is approved, it could be enabled again.
fix(expand): prevent infinity loop in macro containing only "///"
Fixes https://github.com/rust-lang/rust/issues/112342
Issue #112342 was caused by an infinity loop in `parse_tt_inner`, and the state of it is as follows:
- `matcher`: `[Sequence, Token(Doc), SequenceKleeneOpNoSep(op: ZeroOrMore), Eof]`
- loop:
| Iteration | Action |
| - | - |
| 0 | enter `Sequence`|
| 1 | enter `Token(Doc)` and `mp.idx += 1` had been executed |
| 2 | enter `SequenceKleeneOpNoSep` and reset `mp.idx` to `1` |
| 3 | enter `Token(Doc)` again|
To prevent the infinite loop, a check for whether it only contains `DocComment` in `check_lhs_no_empty_seq` had been added.
Add `-Ztrait-solver=next-coherence`
Flag that conditionally uses the trait solver *only* during coherence, for more testing and/or eventual partial-migration onto the trait solver (in the medium- to long-term).
* This still uses the selection context in some of the coherence methods I think, so it's not "complete". Putting this up for review and/or for further work in-tree.
* I probably need to spend a bit more time making sure that we don't sneakily create any other infcx's during coherence that also need the new solver enabled.
r? `@lcnr`
Fall back to bidirectional normalizes-to if no subst-relate candidate in alias-relate goal
Sometimes we get into the case where the choice of normalizes-to branch in alias-relate are both valid, but we cannot make a choice of which one to take because they are different -- either returning equivalent but permuted region constraints, or equivalent opaque type definitions but differing modulo normalization.
In this case, we can make progress by considering a fourth candidate where we compute both normalizes-to branches together and canonicalize that as a response. This is essentially the AND intersection of both normalizes-to branches. In an ideal world, we'd be returning something more like the OR intersection of both branches, but we have no way of representing that either for regions (maybe eventually) or opaques (don't see that happening ever).
This is incomplete, so like the subst-relate fallback it's only considered outside of coherence. But it doesn't seem like a dramatic strengthening of inference or anything, and is useful for helping opaque type inference succeed when the hidden type is a projection.
## Example
Consider the goal - `AliasRelate(Tait, <[i32; 32] as IntoIterator>::IntoIter)`.
We have three ways of currently solving this goal:
1. SubstRelate - fails because we can't directly equate the substs of different alias kinds.
2. NormalizesToRhs - `Tait normalizes-to <[i32; 32] as IntoIterator>::IntoIter`
* Ends up infering opaque definition - `Tait := <[i32; 32] as IntoIterator>::IntoIter`
3. NormalizesToLhs - `<[i32; 32] as IntoIterator>::IntoIter normalizes-to Tait`
* Find impl candidate, substitute the associated type - `std::array::IntoIter<i32, 32>`
* Equate `std::array::IntoIter<i32, 32>` and `Tait`
* Ends up infering opaque definition - `Tait := std::array::IntoIter<i32, 32>`
The problem here is that 2 and 3 are essentially both valid, since we have aliases that normalize on both sides, but due to lazy norm, they end up inferring different opaque type definitions that are only equal *after* normalizing them further.
---
r? `@lcnr`
Emit an error when return-type-notation is used with type/const params
These are not intended to be supported initially, even though the compiler supports them internally...
- remove useless commands from test Makefile
- do not unnecessarily remove metadata temporary files because they'll be managed by MaybeTempDir
- remove unused FailedRemove error introduced by this PR
If `-o -` or `--emit KIND=-` is provided, output will be written
to stdout instead. Binary output (`obj`, `llvm-bc`, `link` and
`metadata`) being written this way will result in an error unless
stdout is not a tty. Multiple output types going to stdout will
trigger an error too, as they will all be mixded together.
Fix suggestion for matching struct with `..` on both ends
### Before This PR
```
error: expected `}`, found `,`
--> src\main.rs:8:17
|
8 | Foo { .., x, .. } => (),
| --^
| | |
| | expected `}`
| `..` must be at the end and cannot have a trailing comma
|
help: move the `..` to the end of the field list
|
8 - Foo { .., x, .. } => (),
8 + Foo { .., x, , .. } => (),
|
```
### After This PR
```
error: expected `}`, found `,`
--> tests/ui/parser/issue-112188.rs:11:17
|
11 | let Foo { .., x, .. } = f; //~ ERROR expected `}`, found `,`
| --^-
| | |
| | expected `}`
| `..` must be at the end and cannot have a trailing comma
| help: remove the starting `..`
```
Fixes#112188.
Don't suggest changing `&self` and `&mut self` in function signature to be mutable when taking `&mut self` in closure
Current suggestion for when taking a mutable reference to `self` in a closure (as an upvar) will produce a machine-applicable suggestion to change the `self` in the function signature to `mut self`, but does not account for the specialness of implicit self in that it can already have `&` and `&mut` (see #111554). This causes the function signature to become `test(&mut mut self)` which does not seem desirable.
```
error[E0596]: cannot borrow `self` as mutable, as it is not declared as mutable
--> src/sound_player.rs:870:11
|
869 | pub fn test(&mut self) {
| ---- help: consider changing this to be mutable: `mut self`
870 | || test2(&mut self);
| ^^^^^^^^^ cannot borrow as mutable
```
This PR suppresses the "changing this to be mutable" suggestion if the implicit self is either `ImplicitSelfKind::ImmRef` or `ImplicitSelfKind::MutRef`.
Fixes#111554.
Correct fortanix LVI test print function
A recent change resulted in a different machine code for the `print` function. This caused the LVI test for this function to fail. This PR:
- Fixes the test for the `print` function
- Simplified the test a bit so future modifications are more unlikely
cc: ``@jethrogb``
Use `load`+`store` instead of `memcpy` for small integer arrays
I was inspired by #98892 to see whether, rather than making `mem::swap` do something smart in the library, we could update MIR assignments like `*_1 = *_2` to do something smarter than `memcpy` for sufficiently-small types that doing it inline is going to be better than a `memcpy` call in assembly anyway. After all, special code may help `mem::swap`, but if the "obvious" MIR can just result in the correct thing that helps everything -- other code like `mem::replace`, people doing it manually, and just passing around by value in general -- as well as makes MIR inlining happier since it doesn't need to deal with all the complicated library code if it just sees a couple assignments.
LLVM will turn the short, known-length `memcpy`s into direct instructions in the backend, but that's too late for it to be able to remove `alloca`s. In general, replacing `memcpy`s with typed instructions is hard in the middle-end -- even for `memcpy.inline` where it knows it won't be a function call -- is hard [due to poison propagation issues](https://rust-lang.zulipchat.com/#narrow/stream/187780-t-compiler.2Fwg-llvm/topic/memcpy.20vs.20load-store.20for.20MIR.20assignments/near/360376712). So because we know more about the type invariants -- these are typed copies -- rustc can emit something more specific, allowing LLVM to `mem2reg` away the `alloca`s in some situations.
#52051 previously did something like this in the library for `mem::swap`, but it ended up regressing during enabling mir inlining (cbbf06b0cd), so this has been suboptimal on stable for ≈5 releases now.
The code in this PR is narrowly targeted at just integer arrays in LLVM, but works via a new method on the [`LayoutTypeMethods`](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_codegen_ssa/traits/trait.LayoutTypeMethods.html) trait, so specific backends based on cg_ssa can enable this for more situations over time, as we find them. I don't want to try to bite off too much in this PR, though. (Transparent newtypes and simple things like the 3×usize `String` would be obvious candidates for a follow-up.)
Codegen demonstrations: <https://llvm.godbolt.org/z/fK8hT9aqv>
Before:
```llvm
define void `@swap_rgb48_old(ptr` noalias nocapture noundef align 2 dereferenceable(6) %x, ptr noalias nocapture noundef align 2 dereferenceable(6) %y) unnamed_addr #1 {
%a.i = alloca [3 x i16], align 2
call void `@llvm.lifetime.start.p0(i64` 6, ptr nonnull %a.i)
call void `@llvm.memcpy.p0.p0.i64(ptr` noundef nonnull align 2 dereferenceable(6) %a.i, ptr noundef nonnull align 2 dereferenceable(6) %x, i64 6, i1 false)
tail call void `@llvm.memcpy.p0.p0.i64(ptr` noundef nonnull align 2 dereferenceable(6) %x, ptr noundef nonnull align 2 dereferenceable(6) %y, i64 6, i1 false)
call void `@llvm.memcpy.p0.p0.i64(ptr` noundef nonnull align 2 dereferenceable(6) %y, ptr noundef nonnull align 2 dereferenceable(6) %a.i, i64 6, i1 false)
call void `@llvm.lifetime.end.p0(i64` 6, ptr nonnull %a.i)
ret void
}
```
Note it going to stack:
```nasm
swap_rgb48_old: # `@swap_rgb48_old`
movzx eax, word ptr [rdi + 4]
mov word ptr [rsp - 4], ax
mov eax, dword ptr [rdi]
mov dword ptr [rsp - 8], eax
movzx eax, word ptr [rsi + 4]
mov word ptr [rdi + 4], ax
mov eax, dword ptr [rsi]
mov dword ptr [rdi], eax
movzx eax, word ptr [rsp - 4]
mov word ptr [rsi + 4], ax
mov eax, dword ptr [rsp - 8]
mov dword ptr [rsi], eax
ret
```
Now:
```llvm
define void `@swap_rgb48(ptr` noalias nocapture noundef align 2 dereferenceable(6) %x, ptr noalias nocapture noundef align 2 dereferenceable(6) %y) unnamed_addr #0 {
start:
%0 = load <3 x i16>, ptr %x, align 2
%1 = load <3 x i16>, ptr %y, align 2
store <3 x i16> %1, ptr %x, align 2
store <3 x i16> %0, ptr %y, align 2
ret void
}
```
still lowers to `dword`+`word` operations, but has no stack traffic:
```nasm
swap_rgb48: # `@swap_rgb48`
mov eax, dword ptr [rdi]
movzx ecx, word ptr [rdi + 4]
movzx edx, word ptr [rsi + 4]
mov r8d, dword ptr [rsi]
mov dword ptr [rdi], r8d
mov word ptr [rdi + 4], dx
mov word ptr [rsi + 4], cx
mov dword ptr [rsi], eax
ret
```
And as a demonstration that this isn't just `mem::swap`, a `mem::replace` on a small array (since replace doesn't use swap since #83022), which used to be `memcpy`s in LLVM changes in IR
```llvm
define void `@replace_short_array(ptr` noalias nocapture noundef sret([3 x i32]) dereferenceable(12) %0, ptr noalias noundef align 4 dereferenceable(12) %r, ptr noalias nocapture noundef readonly dereferenceable(12) %v) unnamed_addr #0 {
start:
%1 = load <3 x i32>, ptr %r, align 4
store <3 x i32> %1, ptr %0, align 4
%2 = load <3 x i32>, ptr %v, align 4
store <3 x i32> %2, ptr %r, align 4
ret void
}
```
but that lowers to reasonable `dword`+`qword` instructions still
```nasm
replace_short_array: # `@replace_short_array`
mov rax, rdi
mov rcx, qword ptr [rsi]
mov edi, dword ptr [rsi + 8]
mov dword ptr [rax + 8], edi
mov qword ptr [rax], rcx
mov rcx, qword ptr [rdx]
mov edx, dword ptr [rdx + 8]
mov dword ptr [rsi + 8], edx
mov qword ptr [rsi], rcx
ret
```
Rollup of 6 pull requests
Successful merges:
- #112081 (Avoid ICE on `#![doc(test(...)]` with literal parameter)
- #112196 (Resolve vars in result from `scrape_region_constraints`)
- #112303 (Normalize in infcx instead of globally for `Option::as_deref` suggestion)
- #112316 (Ensure space is inserted after keyword in `unused_delims`)
- #112318 (Merge method, type and const object safety checks)
- #112322 (Don't mention `IMPLIED_BOUNDS_ENTAILMENT` if signatures reference error)
Failed merges:
- #112251 (rustdoc: convert `if let Some()` that always matches to variable)
r? `@ghost`
`@rustbot` modify labels: rollup
Normalize in infcx instead of globally for `Option::as_deref` suggestion
fixes#112293
The projection may contain inference variables. These inference variables are local to the local inference context. Using `tcx.normalize_erasing_regions` doesn't work here because this method is global and does not have access to the inference context. It's therefore unable to deal with the inference variables. We normalize in the local inference context instead, which knowns about the inference variables.
The test looks a little different than the issue example, I made it more minimal and verified that it still ICEs on nightly.
Also contains a drive-by fix to properly compare the types.
r? `@compiler-errors`
Resolve vars in result from `scrape_region_constraints`
Since we perform `type_op::Normalize` in the local infcx when the new solver is enabled, vars aren't necessarily resolved, which triggers this ICE:
f85ab544df/compiler/rustc_infer/src/infer/nll_relate/mod.rs (L481)
There are more tests that go from ICE -> pass due to this change, but I just added revisions to a few for CI.
r? `@lcnr`
The projection may contain inference variables. These inference
variables are local to the local inference context. Using
`tcx.normalize_erasing_regions` doesn't work here because this method is
global and does not have access to the inference context. It's therefore
unable to deal with the inference variables. We normalize in the local
inference context instead, which knowns about the inference variables.
Show note for type ascription on a local binding interpreted as a constant pattern and not a new variable
Given the code
```rust
pub fn main() {
const y: i32 = 4;
let y: i32 = 3;
}
```
`y` in the let binding is actually interpreted as a constant pattern and is not a new variable, causing confusing diagnostics about refutable patterns in local binding.
This PR extends the note for type ascription of a constant pattern to `AscribeUserType` patterns which have `Constant` subpatterns.
Fixes#112269.
Fix type-inference regression in #112225
The type inference of argument-position closures and async blocks regressed in 1.70 as the evaluation order of async blocks changed, as they are not implicitly wrapped in an identity-function anymore.
Fixes#112225 by making sure the evaluation order stays the same as it used to.
r? `@compiler-errors`
As this was a stable-to-stable regression, it might be worth to consider backporting. Although the workaround for this is trivial as well: Just wrap the async block in another block.
Migrate GUI colors test to original CSS color format
Follow-up of https://github.com/rust-lang/rust/pull/111459.
The update for `browser-ui-test` version is because for hex color conversions, it used a precision of 1 instead of 2, which was problematic.
r? `@notriddle`
Given the code
```rust
pub fn main() {
const y: i32 = 4;
let y: i32 = 3;
}
```
`y` in the let binding is actually interpreted as a constant pattern
and is not a new variable, causing confusing diagnostics about
refutable patterns in local binding.
This commit extends the note for type ascription as a constant pattern
to `AscribeUserType` patterns as well.
Fix bug where private item with intermediate doc hidden re-export was not inlined
This fixes this bug:
```rust
mod private {
/// Original.
pub struct Bar3;
}
/// Hidden.
#[doc(hidden)]
pub use crate::private::Bar3;
/// Visible.
pub use self::Bar3 as Reexport;
```
In this case, `private::Bar3` should be inlined and renamed `Reexport` but instead we have:
```
pub use self::Bar3 as Reexport;
```
and no links.
There were actually two issues: the first one is that we forgot to check if the next intermediate re-export was doc hidden. The second was that we made the `#[doc(hidden)]` attribute inheritable, which shouldn't be possible.
r? `@notriddle`
