When refining covspans, we don't specifically care which ones represent
closures; we just want to know which ones represent "holes" that should be
carved out of other spans and then discarded.

(Closures are currently the only source of hole spans, but in the future we
might want to also create hole spans for nested items and inactive `#[cfg(..)]`
regions.)

Signed-off-by: cui fliter <imcusg@gmail.com>

It is used in:

- `library/std/src/sys/locks/condvar/pthread.rs`
- `library/std/src/sys/pal/unix/thread_parking/pthread.rs`

…iler-errors

mark `min_exhaustive_patterns` as complete

This is step 1 and 2 of my [proposal](rust-lang#119612 (comment)) to move `min_exhaustive_patterns` forward. The vast majority of in-tree use cases of `exhaustive_patterns` are covered by `min_exhaustive_patterns`. There are a few cases that still require `exhaustive_patterns` in tests and they're all behind references.

r? ``@ghost``

…mease

Don't ICE on anonymous struct in enum variant

Fixes rust-lang#121446

Computing `adt_def` for the anon struct calls `adt_def` on the parent to find its repr. If the parent is a non-item (e.g. an enum variant) we should have already emitted at least one error, so we just use the repr of the anonymous struct to avoid an ICE.

cc ``@frank-king``

coverage: Rename `is_closure` to `is_hole`

Extracted from rust-lang#121433, since I was having second thoughts about some of the other changes bundled in that PR, but these changes are still fine.

---

When refining covspans, we don't specifically care which ones represent closures; we just want to know which ones represent "holes" that should be carved out of other spans and then discarded.

(Closures are currently the only source of hole spans, but in the future we might want to also create hole spans for nested items and inactive `#[cfg(..)]` regions.)

``@rustbot`` label +A-code-coverage

remove repetitive words

…ic, r=Nilstrieb

Make QNX/NTO specific "timespec capping" public to crate::sys

It is used in:

- `library/std/src/sys/locks/condvar/pthread.rs`
- `library/std/src/sys/pal/unix/thread_parking/pthread.rs`

This is probably required due to introduction of `sys/pal` and rust-lang#121177

`@rustbot` label +O-neutrino
CC: `@jonathanpallant` `@japaric` `@gh-tr`

…li-obk

lint-overflowing-ops: unify cases and remove redundancy

Follow-up to rust-lang#121432
r? `@oli-obk`