… r=wesleywiser

Arbitrary self types v2: niche deshadowing test

Arbitrary self types v2 attempts to detect cases where methods in an "outer" type (e.g. a smart pointer) might "shadow" methods in the referent.

There are a couple of cases where the current code makes no attempt to detect such shadowing. Both of these cases only apply if other unstable features are enabled.

Add a test, mostly for illustrative purposes, so we can see the shadowing cases that can occur.

Part of rust-lang#44874
r? `@wesleywiser`

… r=wesleywiser

Arbitrary self types v2: niche deshadowing test

Arbitrary self types v2 attempts to detect cases where methods in an "outer" type (e.g. a smart pointer) might "shadow" methods in the referent.

There are a couple of cases where the current code makes no attempt to detect such shadowing. Both of these cases only apply if other unstable features are enabled.

Add a test, mostly for illustrative purposes, so we can see the shadowing cases that can occur.

Part of rust-lang#44874
r? ``@wesleywiser``

…iaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#123604 (Abstract `ProcThreadAttributeList` into its own struct)
 - rust-lang#128780 (Add `--doctest-compilation-args` option to add compilation flags to doctest compilation)
 - rust-lang#133782 (Precedence improvements: closures and jumps)
 - rust-lang#134509 (Arbitrary self types v2: niche deshadowing test)
 - rust-lang#134524 (Arbitrary self types v2: no deshadow pre feature.)
 - rust-lang#134539 (Restrict `#[non_exaustive]` on structs with default field values)
 - rust-lang#134586 (Also lint on option of function pointer comparisons)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup merge of rust-lang#134509 - adetaylor:niche-deshadowing-tests, r=wesleywiser

Arbitrary self types v2: niche deshadowing test

Arbitrary self types v2 attempts to detect cases where methods in an "outer" type (e.g. a smart pointer) might "shadow" methods in the referent.

There are a couple of cases where the current code makes no attempt to detect such shadowing. Both of these cases only apply if other unstable features are enabled.

Add a test, mostly for illustrative purposes, so we can see the shadowing cases that can occur.

Part of rust-lang#44874
r? ```@wesleywiser```