…e junction

Workaround rust-lang#109797 on windows-gnu

The addition of `#[inline]` here in rust-lang#108089 caused an unrelated linking issue (rust-lang#109797). This PR removes this attribute again on Windows to avoid regressions.

diagnostics: account for self type when looking for source of unsolved type variable

Fixes rust-lang#109905.

When searching for the source of an unsolved infer var inside of a list of generic args, we look through the `tcx.generics_of(…).own_substs(…)` which *skips* the self type if present. However, the computed `argument_index` is later[^1] used to index into `tcx.generics_of(…).params` which may still contain the self type. In such case, we are off by one when indexing into the parameters.

From now on, we account for this immediately after calling `own_substs` which keeps things local.

This also fixes the wrong output in the preexisting UI test `inference/need_type_info/concrete-impl.rs` which was overlooked. It used to claim that the *type of type parameter `Self`* couldn't be inferred in `<Struct as Ambiguous<_>>::method()` which of course isn't true: `Self` equals `Struct` here, `A` couldn't be inferred.

`@rustbot` label A-diagnostics

[^1]: https://github.com/rust-lang/rust/blob/f98a2718141593fbb8dbad10acc537786d748156/compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs#L471

…rrun, r=ChrisDenton

Fix buffer overrun in bootstrap and (test-only) symlink_junction

I don't think these can be hit in practice, due to their inputs being valid paths. It's also not security-sensitive code, but just... bad vibes.

I think this is still not really the right way to do this (in terms of path correctness), but is no worse than it was.

r? `@ChrisDenton`

…vacy-reason, r=WaffleLapkin

Label `non_exhaustive` attribute on privacy errors from non-local items

Label when an ADT is `non_exhaustive` and we get a privacy error, help with confusion in a case like this:

```rust
#[non_exhaustive]
pub struct Foo;

// other crate
let x = Foo;
//~^ ERROR unit struct `Foo` is private
```

…e, r=notriddle

Run collapsed GUI test in mobile mode as well

Extending test from rust-lang#109818 to be run on mobile as well.

Part of rust-lang#66181.

r? `@notriddle`

…on, r=compiler-errors

fix: fix regression in rust-lang#109203

Fixes rust-lang#110014

r? `@compiler-errors`