… is found

This doesn't update main.js because it's included as a fixed string.

Do not emit the advanced diagnostics on macros

Fixes rust-lang#83510

…cros, r=varkor

Trigger `unused_doc_comments` on macros at once

Fixes rust-lang#83768

rustdoc: Link to the docs on namespaces when an unknown disambiguator is found

cc rust-lang#83859

`@lopopolo` does this look about like what you expected?

r? `@camelid`

Use AnonConst for asm! constants

This replaces the old system which used explicit promotion. See rust-lang#83169 for more background.

The syntax for `const` operands is still the same as before: `const <expr>`.

Fixes rust-lang#83169

Because the implementation is heavily based on inline consts, we suffer from the same issues:
- We lose the ability to use expressions derived from generics. See the deleted tests in `src/test/ui/asm/const.rs`.
- We are hitting the same ICEs as inline consts, for example rust-lang#78174. It is unlikely that we will be able to stabilize this before inline consts are stabilized.

… r=varkor

forbid `impl Trait` in generic param defaults

Fixes rust-lang#83929

Forbid using `impl Trait` in the default types of generic parameters, e.g. `struct Foo<T = impl Trait>`. I assume this was never supposed to be allowed - it seems no UI test used it.

Note that using `impl Trait` in this position did not hit a feature gate error; however, this *shouldn't* be a breaking change as any attempt to use it should have hit the ICE in rust-lang#83929 and/or failed to provide a defining use of the `impl Trait`.

Add suggestion to reborrow mutable references when they're moved in a for loop

Address rust-lang#83924