Add vectored positioned I/O on Unix
Add methods for vectored I/O with an offset on `File` for `unix` under `#![feature(unix_file_vectored_at)]`.
The new methods are wrappers around `preadv` and `pwritev`.
Tracking issue: #89517
Match unmatched backticks in library/
Found with GNU grep:
```
grep -rEn '^(([^`]*`){2})*[^`]*`[^`]*$' library/ | rg -v '\s*[//]?.{1,2}```'
```
split out from #108685 as per advice.
Use `Option::as_slice` where applicable
After #105871 introduced `Option::as_slice`, this PR uses it within the compiler. I found it interesting that all cases where `as_slice` could be used were done with different code before; so it seems the new API also has the benefit of being "the obvious solution" where before there was a mix of options, none clearly better than the rest.
Add `Atomic*::from_ptr`
This PR adds functions in the following form to all atomic types:
```rust
impl AtomicT {
pub const unsafe fn from_ptr<'a>(ptr: *mut T) -> &'a AtomicT;
}
```
r? `@m-ou-se` (we've talked about it before)
I'm not sure about docs & safety requirements, I'd appreciate some feedback on them.
Label opaque type for 'captures lifetime' error message
Providing more information may help make this somewhat opaque (lol) error message a bit clearer.
add -Zexport-executable-symbols to unstable book
This flag has been extremely useful to me, but it's hard to discover. The text contains a bunch of terms that hopefully a search engine will pick up on when someone searches for this functionality.
Clippy Fix array-size-threshold config deserialization error
Complementary PR to https://github.com/rust-lang/rust/pull/108673 in order to also get this into the **next** beta.
r? ``@Mark-Simulacrum``
Fix another ICE in `point_at_expr_source_of_inferred_type`
Types coming from method probes must only be investigated *structurally*, since they often contain escaping infer variables from generalization and autoderef. We already have a hack in this PR that erases variables from types, so just use that.
Fixes#108664
The note attached to this error is pretty bad:
```
here the type of `primes` is inferred to be `[_]`
```
But that's unrelated to the PR.
---
Side-note: This is a pretty easy to trigger beta regression, so I've nominated it. Alternatively, I'm slightly inclined to remove this code altogether until it can be reformulated to be more accurate and less ICEy.
Remove legacy PM leftovers
This drops two leftovers of legacy PM usage:
* We don't need to initialize passes anymore.
* The pass listing was still using legacy PM passes. Replace it with the corresponding new PM listing.
Deny capturing late-bound non-lifetime param in anon const
Introduce a new AnonConstBoundary so we can detect when we capture a late-bound non-lifetime param with `non_lifetime_binders` enabled.
In the future, we could technically do something like introduce an early-bound parameter on the anon const, and stick the late-bound param in its substs (kinda like how we turn late-bound lifetimes in opaques into early-bound ones). But for now, just deny it so we don't ICE.
Fixes#108191
Rollup of 8 pull requests
Successful merges:
- #108022 (Support allocations with non-Box<[u8]> bytes)
- #108367 (Re-apply "switch to the macos-12-xl builder")
- #108557 (Point error span at Some constructor argument when trait resolution fails)
- #108573 (Explain compile-time vs run-time difference in env!() error message)
- #108584 (Put backtick content from rustdoc search errors into a `<code>` elements)
- #108624 (Make `ExprKind` the first field in `thir::Expr`)
- #108644 (Allow setting hashmap toml values in `./configure`)
- #108672 (Feed queries on impl side for RPITITs when using lower_impl_trait_in_trait_to_assoc_ty)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
This commit desugars the drop and replace deriving from an
assignment at MIR build, avoiding the construction of the
DropAndReplace terminator (which will be removed in a followign PR)
In order to retain the same error messages for replaces a new
DesugaringKind::Replace variant is introduced.
`mirror_expr_inner` calls `temporary_scope`. It then calls
`make_mirror_unadjusted` which makes an identical call to
`temporary_scope`.
This commit changes the `mirror_expr_inner` to get the `temp_lifetime`
out of the expression produced by `make_mirror_unadjusted`, similar to
how it currently gets the type.
