Auto merge of #40857 - estebank:recursive, r=arielb1

Point at fields that make the type recursive

On recursive types of infinite size, point at all the fields that make
the type recursive.

```rust
struct Foo {
    bar: Bar,
}

struct Bar {
    foo: Foo,
}
```

outputs

```
error[E0072]: recursive type `Foo` has infinite size
 --> file.rs:1:1
1 | struct Foo {
  | ^^^^^^^^^^ recursive type has infinite size
2 |     bar: Bar,
  |     -------- recursive here
  |
  = help: insert indirection (e.g., a `Box`, `Rc`, or `&`) at some point to make `Foo` representable

error[E0072]: recursive type `Bar` has infinite size
 --> file.rs:5:1
  |
5 | struct Bar {
  | ^^^^^^^^^^ recursive type has infinite size
6 |     foo: Foo,
  |     -------- recursive here
  |
  = help: insert indirection (e.g., a `Box`, `Rc`, or `&`) at some point to make `Bar` representable
```

0 files changed, 0 insertions, 0 deletions