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Don't attempt to compute layout of type referencing error
Leads to more ICEs and strange diagnostics than are worth it.
Fixes #113760
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Less `TokenTree` cloning
`TokenTreeCursor` has this comment on it:
```
// FIXME: Many uses of this can be replaced with by-reference iterator to avoid clones.
```
This PR completes that FIXME. It doesn't have much perf effect, but at least we now know that.
r? `@petrochenkov`
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r=notriddle,fmease
[rustdoc] If re-export is private, get the next item until a public one is found or expose the private item directly
Fixes #81141.
If we have:
```rust
use Private as Something;
pub fn foo() -> Something {}
```
Then `Something` will be replaced by `Private`.
r? `@notriddle`
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r=GuillaumeGomez
rustdoc: fix cross-crate `impl Sized` & `impl ?Sized`
Previously, cross-crate impl-Trait (APIT, RPIT, etc.) that only consists of a single `Sized` bound (modulo outlives-bounds) and ones that are `?Sized` were incorrectly rendered. To give you a taste (before vs. after):
```diff
- fn sized(x: impl ) -> impl
+ fn sized(x: impl Sized) -> impl Sized
- fn sized_outlives<'a>(x: impl 'a) -> impl 'a
+ fn sized_outlives<'a>(x: impl Sized + 'a) -> impl Sized + 'a
- fn maybe_sized(x: &impl ) -> &impl
+ fn maybe_sized(x: &impl ?Sized) -> &impl ?Sized
- fn debug_maybe_sized(x: &impl Debug) -> &impl ?Sized + Debug
+ fn debug_maybe_sized(x: &(impl Debug + ?Sized)) -> &(impl Debug + ?Sized)
```
Moreover, we now surround impl-Trait that has multiple bounds with parentheses if they're the pointee of a reference or raw pointer type. This affects both local and cross-crate docs. The current output isn't correct (rustc would emit the error *ambiguous `+` in a type* if we fed the rendered code back to it).
---
Best reviewed commit by commit :)
`@rustbot` label A-cross-crate-reexports
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Now the cloning only happens on some paths, instead of all paths.
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Fix missing attribute merge on glob foreign re-exports
Fixes https://github.com/rust-lang/rust/issues/113982.
The attributes were not merged with the import's in case of glob re-export of foreign items.
r? `@notriddle`
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fix intra-doc links on nested `use` and `extern crate` items
This PR fixes two rustdoc ICEs that happen if there are any intra-doc links on nested `use` or `extern crate` items, for example:
```rust
/// Re-export [`fmt`] and [`io`].
pub use std::{fmt, io}; // "nested" use = use with braces
/// Re-export [`std`].
pub extern crate std;
```
Nested use items were incorrectly considered private and therefore didn't have their intra-doc links resolved. I fixed this by always resolving intra-doc links for nested `use` items that are declared `pub`.
<details>
During AST->HIR lowering, nested `use` items are desugared like this:
```rust
pub use std::{}; // "list stem"
pub use std::fmt;
pub use std::io;
```
Each of these HIR nodes has it's own effective visibility and the list stem is always considered private.
To check the effective visibility of an AST node, the AST node is mapped to a HIR node with `Resolver::local_def_id`, which returns the (private) list stem for nested use items.
</details>
For `extern crate`, there was a hack in rustdoc that stored the `DefId` of the crate itself in the cleaned item, instead of the `DefId` of the `extern crate` item. This made rustdoc look at the resolved links of the extern crate's crate root instead of the `extern crate` item. I've removed this hack and instead translate the `DefId` in the appropriate places.
As as side effect of fixing `extern crate`, i've turned
```rust
#[doc(masked)]
extern crate self as _;
```
into a no-op instead of hiding all trait impls. Proper verification for `doc(masked)` is included as a bonus.
fixes https://github.com/rust-lang/rust/issues/113896
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This reverts commit ea9a17b9995b7a076283777b7d462a360fece2d6.
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expose the private item directly
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r=GuillaumeGomez
Remove outdated Firefox-specific CSS for search's crate selector appearance
Remove adjustments that used to be necessary for search's crate selector appearance (padding) to look identical on Firefox. New versions of Firefox appear to have changed behavior to agree with Chrome.
As briefly discussed in https://github.com/rust-lang/rust/pull/98855#issuecomment-1624098112
r? ``@GuillaumeGomez``
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r=compiler-errors
new solver: don't consider blanket impls multiple times
only consider candidates which rely on the self type in `assemble_candidates_after_normalizing_self_ty`.
r? ``@compiler-errors``
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r=fmease,GuillaumeGomez
rustdoc: fix position of `default` in method rendering
With the following code:
```rs
#![feature(specialization)]
pub trait A {
unsafe fn a();
}
impl A for () {
default unsafe fn a() {}
}
```
rustdoc would render the `impl` of `a` as
```rs
unsafe default fn a()
```
which is inconsistent with the actual position of `default`.
This PR fixes this issue.
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appearance (padding)
to look identical on Firefox. New versions of Firefox appear to have changed behavior to agree with Chrome.
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On nightly, dump ICE backtraces to disk
Implement rust-lang/compiler-team#578.
When an ICE is encountered on nightly releases, the new rustc panic handler will also write the contents of the backtrace to disk. If any `delay_span_bug`s are encountered, their backtrace is also added to the file. The platform and rustc version will also be collected.
<img width="1032" alt="Screenshot 2023-03-03 at 2 13 25 PM" src="https://user-images.githubusercontent.com/1606434/222842420-8e039740-4042-4563-b31d-599677171acf.png">
The current behavior will *always* write to disk on nightly builds, regardless of whether the backtrace is printed to the terminal, unless the environment variable `RUSTC_ICE_DISK_DUMP` is set to `0`. This is a compromise and can be changed.
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r=notriddle,aDotInTheVoid
Fix invalid display of inlined re-export when both local and foreign items are inlined
Fixes #105735.
The bug is actually quite interesting: at the `clean` pass, local inlined items have their `use` item removed, however foreign items don't have their `use` item removed because it's in the `clean` pass that we handle them. So when a `use` inlines both a local and a foreign item, it will work as expected for the foreign one, but not for the local as its `use` should not be around anymore.
To prevent this, I created a new `inlined_foreigns` field into the `Module` struct to allow to remove the `use` item early on for foreign items as well. Then we iterate it in the `clean` pass directly.
r? ``@notriddle``
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Implement rust-lang/compiler-team#578.
When an ICE is encountered on nightly releases, the new rustc panic
handler will also write the contents of the backtrace to disk. If any
`delay_span_bug`s are encountered, their backtrace is also added to the
file. The platform and rustc version will also be collected.
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r=notriddle
Fix results search alias display
Currently it's displayed like this:
With this fix:
r? `@notriddle`
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