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Suppress `opaque_hidden_inferred_bound` for nested RPITs
They trigger too much, making repos like linkerd/linkerd2-proxy#2275 sad.
Ideally, at least for RPITs (and probably TAITs?), specifically when we have `impl Trait<Assoc = impl ..>`, that nested opaque should have the necessary `Assoc` item bounds elaborated into its own item bounds. But that's another story.
r? ```@oli-obk```
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mv tests/codegen/issue-* tests/codegen/issues/
No changes to the contents; just a move.
Like how there's a <https://github.com/rust-lang/rust/tree/master/tests/ui/issues> folder.
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Rollup of 10 pull requests
Successful merges:
- #109373 (Set LLVM `LLVM_UNREACHABLE_OPTIMIZE` to `OFF`)
- #109392 (Custom MIR: Allow optional RET type annotation)
- #109394 (adapt tests/codegen/vec-shrink-panik for LLVM 17)
- #109412 (rustdoc: Add GUI test for "Auto-hide item contents for large items" setting)
- #109452 (Ignore the vendor directory for tidy tests.)
- #109457 (Remove comment about reusing rib allocations)
- #109461 (rustdoc: remove redundant `.content` prefix from span/a colors)
- #109477 (`HirId` to `LocalDefId` cleanup)
- #109489 (More general captures)
- #109494 (Do not feed param_env for RPITITs impl side)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Do not feed param_env for RPITITs impl side
r? `@compiler-errors`
I don't think this needs more comments or things that we already have but please let me know if you want some comments or something else in this PR.
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rustdoc: Add GUI test for "Auto-hide item contents for large items" setting
Part of https://github.com/rust-lang/rust/issues/66181.
The `browser-ui-test` version update is because there wasn't `null` check for attributes so I added it (PR is [here](https://github.com/GuillaumeGomez/browser-UI-test/pull/440)).
r? ``@notriddle``
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adapt tests/codegen/vec-shrink-panik for LLVM 17
After https://github.com/llvm/llvm-project/commit/0d4a709bb876824a0afa5f86e138e8ffdcaf7661 LLVM now doesn't generate references to panic_cannot_unwind:
https://buildkite.com/llvm-project/rust-llvm-integrate-prototype/builds/17978#0186ff55-ca6f-4bc5-b1ec-2622c77d0ed5/744-746
Adapted as suggested by ````@nikic```` on Zulip:
https://rust-lang.zulipchat.com/#narrow/stream/187780-t-compiler.2Fwg-llvm/topic/a.20couple.20codegen.20test.20failures.20after.20llvm.200d4a709bb876824a/near/342664944
>Okay, so LLVM now realizes that double panic is not possible, so that's fine.
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Custom MIR: Allow optional RET type annotation
This currently doesn't compile because the type of `RET` is inferred, which fails if RET is a composite type and fields are initialised separately.
```rust
#![feature(custom_mir, core_intrinsics)]
extern crate core;
use core::intrinsics::mir::*;
#[custom_mir(dialect = "runtime", phase = "optimized")]
fn fn0() -> (i32, bool) {
mir! ({
RET.0 = 0;
RET.1 = true;
Return()
})
}
```
```
error[E0282]: type annotations needed
--> src/lib.rs:8:9
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8 | RET.0 = 0;
| ^^^ cannot infer type
For more information about this error, try `rustc --explain E0282`.
```
This PR allows the user to manually specify the return type with `type RET = ...;` if required:
```rust
#[custom_mir(dialect = "runtime", phase = "optimized")]
fn fn0() -> (i32, bool) {
mir! (
type RET = (i32, bool);
{
RET.0 = 0;
RET.1 = true;
Return()
}
)
}
```
The syntax is not optimal, I'm happy to see other suggestions. Ideally I wanted it to be a normal type annotation like `let RET: ...;`, but this runs into the multiple parsing options error during macro expansion, as it can be parsed as a normal `let` declaration as well.
r? ```@oli-obk``` or ```@tmiasko``` or ```@JakobDegen```
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Detect uninhabited types early in const eval
r? `@RalfJung`
implements https://github.com/rust-lang/rust/pull/108442#discussion_r1143003840
this is a breaking change, as some UB during const eval is now detected instead of silently being ignored. Users can see this and other UB that may cause future breakage with `-Zextra-const-ub-checks` or just by running miri on their code, which sets that flag by default.
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Do not consider synthesized RPITITs on missing items checks
Without this patch for `tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.rs` we get ...
```
warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
--> tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.rs:4:12
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4 | #![feature(return_position_impl_trait_in_trait)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
= note: `#[warn(incomplete_features)]` on by default
error[E0046]: not all trait items implemented, missing: `foo`, ``
--> tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.rs:12:1
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8 | fn foo(&self) -> impl Sized;
| ----------------------------
| | |
| | `` from trait
| `foo` from trait
...
12 | impl MyTrait for i32 {
| ^^^^^^^^^^^^^^^^^^^^ missing `foo`, `` in implementation
error: aborting due to previous error; 1 warning emitted
For more information about this error, try `rustc --explain E0046`.
```
instead of ...
```
warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
--> $DIR/dont-project-to-rpitit-with-no-value.rs:4:12
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LL | #![feature(return_position_impl_trait_in_trait)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
= note: `#[warn(incomplete_features)]` on by default
error[E0046]: not all trait items implemented, missing: `foo`
--> $DIR/dont-project-to-rpitit-with-no-value.rs:12:1
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LL | fn foo(&self) -> impl Sized;
| ---------------------------- `foo` from trait
...
LL | impl MyTrait for i32 {
| ^^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation
error: aborting due to previous error; 1 warning emitted
For more information about this error, try `rustc --explain E0046`.
```
r? `@compiler-errors`
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RPITITs are `DefKind::Opaque` with new lowering strategy
r? `@spastorino`
Kinda cherry-picked #109400
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rustdoc: Cleanup parent module tracking for doc links
Keep ids of the documented items themselves, not their parent modules. Parent modules can be retreived from those ids when necessary.
Fixes https://github.com/rust-lang/rust/issues/108501.
That issue could be fixed in a more local way, but this refactoring is something that I wanted to do since https://github.com/rust-lang/rust/pull/93805 anyway.
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move Option::as_slice to intrinsic
````@scottmcm```` suggested on #109095 I use a direct approach of unpacking the operation in MIR lowering, so here's the implementation.
cc ````@nikic```` as this should hopefully unblock #107224 (though perhaps other changes to the prior implementation, which I left for bootstrapping, are needed).
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a general type system cleanup
removes the helper functions `traits::fully_solve_X` as they add more complexity then they are worth. It's confusing which of these helpers should be used in which context.
changes the way we deal with overflow to always add depth in `evaluate_predicates_recursively`. It may make sense to actually fully transition to not have `recursion_depth` on obligations but that's probably a bit too much for this PR.
also removes some other small - and imo unnecessary - helpers.
r? types
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Do not suggest bounds restrictions for synthesized RPITITs
Before this PR we were getting ...
```
warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
--> tests/ui/async-await/in-trait/missing-send-bound.rs:5:12
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5 | #![feature(async_fn_in_trait)]
| ^^^^^^^^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
= note: `#[warn(incomplete_features)]` on by default
error: future cannot be sent between threads safely
--> tests/ui/async-await/in-trait/missing-send-bound.rs:17:20
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17 | assert_is_send(test::<T>());
| ^^^^^^^^^^^ future returned by `test` is not `Send`
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= help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `impl Future<Output = ()>`
note: future is not `Send` as it awaits another future which is not `Send`
--> tests/ui/async-await/in-trait/missing-send-bound.rs:13:5
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13 | T::bar().await;
| ^^^^^^^^ await occurs here on type `impl Future<Output = ()>`, which is not `Send`
note: required by a bound in `assert_is_send`
--> tests/ui/async-await/in-trait/missing-send-bound.rs:21:27
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21 | fn assert_is_send(_: impl Send) {}
| ^^^^ required by this bound in `assert_is_send`
help: consider further restricting the associated type
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16 | fn test2<T: Foo>() where impl Future<Output = ()>: Send {
| ++++++++++++++++++++++++++++++++++++
error: aborting due to previous error; 1 warning emitted
```
and we want this output ...
```
warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
--> $DIR/missing-send-bound.rs:5:12
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LL | #![feature(async_fn_in_trait)]
| ^^^^^^^^^^^^^^^^^
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= note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
= note: `#[warn(incomplete_features)]` on by default
error: future cannot be sent between threads safely
--> $DIR/missing-send-bound.rs:17:20
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LL | assert_is_send(test::<T>());
| ^^^^^^^^^^^ future returned by `test` is not `Send`
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= help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `impl Future<Output = ()>`
note: future is not `Send` as it awaits another future which is not `Send`
--> $DIR/missing-send-bound.rs:13:5
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LL | T::bar().await;
| ^^^^^^^^ await occurs here on type `impl Future<Output = ()>`, which is not `Send`
note: required by a bound in `assert_is_send`
--> $DIR/missing-send-bound.rs:21:27
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LL | fn assert_is_send(_: impl Send) {}
| ^^^^ required by this bound in `assert_is_send`
error: aborting due to previous error; 1 warning emitted
```
r? `@compiler-errors`
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Only implement Fn* traits for extern "Rust" safe function pointers and items
Since calling the function via an `Fn` trait will assume `extern "Rust"` ABI and not do any safety checks, only safe `extern "Rust"` function can implement the `Fn` traits. This syncs the logic between the old solver and the new solver.
r? `@compiler-errors`
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Avoid ICE of attempt to add with overflow in emitter
Fixes #109396
r? ```@estebank```
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Constrain const vars to error if const types are mismatched
When equating two consts of different types, if either are const variables, constrain them to the correct const error kind.
This helps us avoid "successfully" matching a const against an impl signature but leaving unconstrained const vars, which will lead to incremental ICEs when we call const-eval queries during const projection.
Fixes #109296
The second commit in the stack fixes a regression in the first commit where we end up mentioning `[const error]` in an impl overlap error message. I think the error message changes for the better, but I could implement alternative strategies to avoid this without delaying the overlap error message...
r? `@BoxyUwU`
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fix: modify the condition that `resolve_imports` stops
close #97534
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Keep ids of the documented items themselves, not their parent modules.
Parent modules can be retreived from those ids when necessary.
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Custom MIR: Support aggregate expressions
Add support for tuple, array and ADT expressions in custom mir
r? `````@oli-obk````` or `````@tmiasko````` or `````@JakobDegen`````
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Walk un-shifted nested `impl Trait` in trait when setting up default trait method assumptions
Fixes a double subtraction in some binder math in return-position `impl Trait` in trait handling code.
Fixes #109239
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r=b-naber
Enforce non-lifetime-binders in supertrait preds are not object safe
We can't construct vtables for these supertraits.
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Remove the assume(!is_null) from Vec::as_ptr
At a guess, this code is leftover from LLVM was worse at keeping track of the niche information here. In any case, we don't need this anymore: Removing this `assume` doesn't get rid of the `nonnull` attribute on the return type.
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Distribute libntdll.a with windows-gnu toolchains
This allows the OS loader to load essential functions (e.g. read/write file) at load time instead of lazily doing so at runtime.
r? libs
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After https://github.com/llvm/llvm-project/commit/0d4a709bb876824a0afa5f86e138e8ffdcaf7661
LLVM now doesn't generate references to panic_cannot_unwind:
@nikic:
https://rust-lang.zulipchat.com/#narrow/stream/187780-t-compiler.2Fwg-llvm/topic/a.20couple.20codegen.20test.20failures.20after.20llvm.200d4a709bb876824a/near/342664944
>Okay, so LLVM now realizes that double panic is not possible, so that's fine.
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Only expect a GAT const param for `type_of` of GAT const arg
IDK why we were account for both `is_ty_or_const` instead of just for a const param, since we're computing the `type_of` a const param specifically.
Fixes #109300
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Ignore `Inlined` spans when computing caller location.
Fixes https://github.com/rust-lang/rust/issues/105538
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Fix generics_of for impl's RPITIT synthesized associated type
The only useful commit is the last one.
This makes `generics_of` for the impl side RPITIT copy from the trait's associated type and avoid the fn on the impl side which was previously wrongly used.
This solution is better but we still need to fix resolution of the generated generics.
r? ``@compiler-errors``
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rustdoc: Correctly merge import's and its target's docs in one more case
Fixes https://github.com/rust-lang/rust/issues/108334.
Fixes https://github.com/rust-lang/rust/issues/108378.
Fixes https://github.com/rust-lang/rust/issues/108658.
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rustdoc: Fix improper escaping of deprecation reasons
Fix #109374
r? `@jsha`
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fix ClashingExternDeclarations lint ICE
Fixes #109334
First "real" contribution, please let me know if I did something wrong.
As I understand it, it's OK if a `#[repr(transparent)]` type has no non-zero sized types (aka is a ZST itself) and the function should just return the type normally instead of panicking
r? `@Nilstrieb`
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rustdoc: Remove footnote references from doc summary
Since it's one line, we don't have the footnote definition so it doesn't make sense to have the reference.
Part of https://github.com/rust-lang/rust/issues/109024.
r? `@notriddle`
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r=GuillaumeGomez
rustdoc: implement bag semantics for function parameter search
This tweak to the function signature search engine makes things so that, if a type is repeated in the search query, it'll only match if the function actually includes it that many times.
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