rustdoc: hide `#[repr]` if it isn't part of the public ABI
> [!IMPORTANT]
> Temporarily stacked on top of PR https://github.com/rust-lang/rust/pull/146527; only the last commit is relevant!
Follow-up to rust-lang/rust#115439.
Unblocks rust-lang/rust#116743, CC ``@dtolnay.``
Fixesrust-lang/rust#66401.
Fixesrust-lang/rust#128364.
Fixesrust-lang/rust#137440.
Only display the representation `#[repr(REPR)]` (where `REPR` is not `Rust` or `transparent`) of a given type if none of its variants (incl. the synthetic variants of structs) are `#[doc(hidden)]` and all of its fields are public and not `#[doc(hidden)]` since it's likely not meant to be considered part of the public ABI otherwise.
`--document-{private,hidden}-items` works as expected in this context, too.
Moreover, we now also factor in the presence of `#[doc(hidden)]` when checking whether to show `repr(transparent)` or not.
Rollup of 7 pull requests
Successful merges:
- rust-lang/rust#146556 (Fix duration_since panic on unix when std is built with integer overflow checks)
- rust-lang/rust#146679 (Clarify Display for error should not include source)
- rust-lang/rust#146753 (Improve the pretty print of UnstableFeature clause)
- rust-lang/rust#146894 (Improve derive suggestion of const param)
- rust-lang/rust#146950 (core: simplify `CStr::default()`)
- rust-lang/rust#146958 (Fix infinite recursion in Path::eq with String)
- rust-lang/rust#146971 (fix ICE in writeback due to bound regions)
r? `@ghost`
`@rustbot` modify labels: rollup
Improve derive suggestion of const param
Make the suggestion not to remove the adt and use the name of the adt variant in the diagnostic.
r? `@BoxyUwU`
Fix duration_since panic on unix when std is built with integer overflow checks
Add a test for regression rust-lang/rust#146228, and turns out this test fails detects error when std is compiled with integer overflow checks.
Original regression was reverted in rust-lang/rust#146473.
First attempt to fix was in rust-lang/rust#146247; test and some code is copied from there, thanks `@eval-exec`
r? `@RalfJung`
library: std: sys: pal: uefi: Add some comments
I seemed to have forgotten that since I am using GET_PROTOCOL attribute for the std usecases, I did not need to close the protocols explicitly. So adding these comments as a note to future self not to waste time on the same thing again.
Make missed precondition-free float intrinsics safe
So, in my defence, these were both separated out from the other intrinsics in the file *and* had a different safety comment in the stable versions, so, I didn't notice them before. But, in my offence, the entire reason I did the previous PR was because I was using them for SIMD intrinsic fallbacks, and `fabs` is needed for those too, so, I don't really have an excuse.
Extra follow-up to rust-lang/rust#146683.
r? ```@RalfJung``` who reviewed the previous one
These don't appear to be used anywhere outside of the standard locations, at least.
fix 2 borrowck issues
fixes https://github.com/rust-lang/rust/issues/146467 cc ``@amandasystems``
our understanding here is as follows: region constraints from computing implied bounds gets `ConstraintCategory::Internal`. If there's a higher-ranked subtyping errors while computing implied bounds we then ended up with only `ConstraintCategory::Internal` and `ConstraintCategory::OutlivesUnnameablePlaceholder(_)` constraints.
The path was something like
- `'placeholderU2: 'placeholderU1` (`Internal`)
- `'placeholderU1: 'static` (`OutlivesUnnameablePlaceholder('placeholderU2)`)
It's generally somewhat subtle here as ideally relating placeholders doesn't introduce `'static` constraints. Relating the placeholders themselves will always error regardless, cc https://github.com/rust-lang/rust/pull/142623.
---
separately fixes https://github.com/rust-lang/rust/pull/145925#issuecomment-3303733357 by updating the location for deferred closure requirements inside of promoteds. I am not updating their category as doing so is 1) effort and 2) imo actually undesirable 🤔 see the comments in `TypeChecker::check_promoted` cc ``@lqd``
r? lqd
I seemed to have forgotten that since I am using GET_PROTOCOL attribute
for the std usecases, I did not need to close the protocols explicitly.
So adding these comments as a note to future self not to waste time on
the same thing again.
Signed-off-by: Ayush Singh <ayush@beagleboard.org>
Fix a crash/mislex when more than one frontmatter closing possibility is considered
When the less fortunate recovery path for frontmatters are taken, if the lexer considers more than one possible frontmatter closing possibility, the current index is entirely mis-tracked and can result in bump_bytes landing in the middle of a multichar unicode character.
This fixes it by tracking the actual base index and updating it as it considers additional closing possibilities.
fixesrust-lang/rust#146847
Update books
## rust-lang/book
1 commits in 3e9dc46aa563ca0c53ec826c41b05f10c5915925..33f1af40cc44dde7e3e892f7a508e6f427d2cbc6
2025-09-15 16:10:14 UTC to 2025-09-15 16:10:14 UTC
- Release trpl 0.3 (rust-lang/book#4505)
## rust-lang/reference
9 commits in b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee..cc7247d8dfaef4c39000bb12c55c32ba5b5ba976
2025-09-20 10:26:26 UTC to 2025-09-08 18:07:29 UTC
- Document temporary scoping for destructuring assignments (rust-lang/reference#1992)
- Specify lifetime extension of `pin!` and `format_args!` arguments (rust-lang/reference#1980)
- update for more ABIs supporting c-variadics (rust-lang/reference#1936)
- Fix incorrect span tag (rust-lang/reference#1995)
- Remove strike attribute (rust-lang/reference#1997)
- Specify the target limits for target-specific ABIs (rust-lang/reference#2000)
- Remove tuple index carve out (rust-lang/reference#1966)
- Enable folding of chapter listing in navigation sidebar (rust-lang/reference#1988)
- Add support to grammar for single line comments (rust-lang/reference#1993)
## rust-lang/rust-by-example
1 commits in dd26bc8e726dc2e73534c8972d4dccd1bed7495f..2c9b490d70e535cf166bf17feba59e594579843f
2025-09-18 22:28:52 UTC to 2025-09-18 22:28:52 UTC
- Update unit testing output for additional test (rust-lang/rust-by-example#1958)
