Rollup merge of #134279 - jieyouxu:return-adjustment-target, r=compiler-errors

(Re-)return adjustment target if adjust kind is never-to-any

This PR fixes #134162 where we ICE'd on

```rs
fn main() {
    struct X;
    let _ = [X] == [panic!(); 2];
}
```

In https://github.com/rust-lang/rust/pull/121208#discussion_r1494187622, there was a change

```diff
- if let Some(adjustments) = self.typeck_results.borrow().adjustments().get(expr.hir_id) {
-     let reported = self.dcx().span_delayed_bug(
-         expr.span,
-         "expression with never type wound up being adjusted",
-     );
-     return if let [Adjustment { kind: Adjust::NeverToAny, target }] = &adjustments[..] {
-         target.to_owned()
-     } else {
-         Ty::new_error(self.tcx(), reported)
-     };
- }
+ if let Some(_) = self.typeck_results.borrow().adjustments().get(expr.hir_id) {
+     self.dcx()
+         .span_bug(expr.span, "expression with never type wound up being adjusted");
+ }
```

It turned out returning the adjustment target if the adjustment kind is `NeverToAny` is necessary, as otherwise we will go through a series of `delay_bug`s and eventually find that we constructed a `TyKind::Error` without having actually emitted an error.

This PR addresses that by re-returning the adjustment target if the adjustment kind is `NeverToAny`, partially reverting this change from #121208.

This PR has two commits:

1. The first commit adds a regression test for #134162, which will ICE (on stable 1.83.0, beta and nightly 2024-12-13).
2. The second commit is the partial revert, which will fix the ICE.

cc `@nnethercote` FYI as this is related to #121208 changes. The changes from #121208 exposed that we lacked test coverage for the code pattern reported in #134162.

0 files changed, 0 insertions, 0 deletions