Rollup merge of #102186 - ink-feather-org:const_try_trait, r=fee1-dead
Add const_closure, Constify Try trait
Adds a struct for creating const `FnMut` closures (for now just copy pasted form my [const_closure](https://crates.io/crates/const_closure) crate).
I'm not sure if this way is how it should be done.
The `ConstFnClosure` and `ConstFnOnceClosure` structs can probably also be entirely removed.
This is then used to constify the try trait.
Not sure if i should add const_closure in its own pr and maybe make it public behind a perma-unstable feature gate.
cc ```@fee1-dead``` ```@rust-lang/wg-const-eval```
Rollup merge of #100823 - WaffleLapkin:less_offsets, r=scottmcm
Refactor some `std` code that works with pointer offstes
This PR replaces `pointer::offset` in standard library with `pointer::add` and `pointer::sub`, [re]moving some casts and using `.addr()` while we are at it.
This is a more complicated refactor than all other sibling PRs, so take a closer look when reviewing, please 😃 (though I've checked this multiple times and it looks fine).
Rollup merge of #102218 - ehuss:rustc-flags, r=JohnTitor
Document some missing command-line arguments
The rustc command-line arguments docs should document all of the stable arguments for rustc. Two were missing, `--force-warn` which was somewhat documented in the lint-levels chapter, but should also include a mention in the arguments list. `--diagnostic-width` was stabilized in #95635, but the docs weren't updated.
Rollup merge of #102146 - notriddle:notriddle/sidebar-jank, r=GuillaumeGomez
rustdoc: CSS prevent sidebar width change jank
This commit makes the `width` and `min-width` of the sidebar the same. They originally were when cad0fce2053d52b7ba04c458f4c124c8b5c6141e added the `min-width` rule, but 6a5f8b1aef1417d7dc85b5d0a229d2db1930eb7c changed the `width` without changing the `min-width`, causing it to sometimes oscilate between 200 and 250 pixels depending on the main content.
# Before
[Screencast from 09-22-2022 10:25:29 AM.webm](https://user-images.githubusercontent.com/1593513/191813469-ea00f30f-6f49-40fc-9a26-e1dfd5068d2b.webm)
# After
[Screencast from 09-22-2022 10:32:20 AM.webm](https://user-images.githubusercontent.com/1593513/191813642-ae0902da-5262-403a-bbdf-995334201acb.webm)
Rollup merge of #102044 - ChrisDenton:BCrypt-system-rand, r=thomcc
Remove `RtlGenRandom` (take two)
First try to use the system preferred RNG but if that fails (e.g. due to a broken system configuration) then fallback to manually opening an algorithm handle.
Auto merge of #100845 - timvermeulen:iter_compare, r=scottmcm
Use internal iteration in `Iterator` comparison methods
Updates the `Iterator` methods `cmp_by`, `partial_cmp_by`, and `eq_by` to use internal iteration on `self`. I've also extracted their shared logic into a private helper function `iter_compare`, which will either short-circuit once the comparison result is known or return the comparison of the lengths of the iterators.
This change also indirectly benefits calls to `cmp`, `partial_cmp`, `eq`, `lt`, `le`, `gt`, and `ge`.
Unsurprising benchmark results: iterators that benefit from internal iteration (like `Chain`) see a speedup, while other iterators are unaffected.
```
name before ns/iter after ns/iter diff ns/iter diff % speedup
iter::bench_chain_partial_cmp 208,301 54,978 -153,323 -73.61% x 3.79
iter::bench_partial_cmp 55,527 55,702 175 0.32% x 1.00
iter::bench_lt 55,502 55,322 -180 -0.32% x 1.00
```
Auto merge of #102192 - matthiaskrgr:rollup-0ctjzco, r=matthiaskrgr
Rollup of 7 pull requests
Successful merges:
- #102094 (Add missing documentation for `bool::from_str`)
- #102115 (Add examples to `bool::then` and `bool::then_some`)
- #102134 (Detect panic strategy using `rustc --print cfg`)
- #102137 (Don't convert valtree to constvalue during normalization)
- #102148 (add regression test for miri issue 2433)
- #102158 (rustdoc: clean up CSS/DOM for deprecation warnings)
- #102177 (Fix a typo in `std`'s root docs)
Michael Howell [Thu, 22 Sep 2022 17:25:54 +0000 (10:25 -0700)]
rustdoc: CSS prevent sidebar width change jank
This commit makes the `width` and `min-width` of the sidebar the same. They
originally were when cad0fce2053d52b7ba04c458f4c124c8b5c6141e added the
`min-width` rule, but 6a5f8b1aef1417d7dc85b5d0a229d2db1930eb7c changed the
width without changing the `min-width`, causing it to sometimes oscilate
between 200 and 250 pixels depending on the main content.
Rollup merge of #102177 - inquisitivecrystal:std-doc-typo, r=Dylan-DPC
Fix a typo in `std`'s root docs
Remarkably, this typo has been present for *seven years.* I was so surprised that I reread the text five times and then asked people on the rust Zulip to double-check. :)
Rollup merge of #102134 - flba-eb:master, r=bjorn3
Detect panic strategy using `rustc --print cfg`
Instead of relying on a command line parameter, detect if a target is able to unwind or not.
Ignore tests that require unwinding on targets that don't support it.
I did not find any place where the removed parameter has been used, but it feels a bit risky as
I'm new to this test framework.
Rollup merge of #102115 - Alfriadox:master, r=thomcc
Add examples to `bool::then` and `bool::then_some`
Added examples to `bool::then` and `bool::then_some` to show the distinction between the eager evaluation of `bool::then_some` and the lazy evaluation of `bool::then`.
Auto merge of #102056 - b-naber:unevaluated, r=lcnr
Introduce mir::Unevaluated
Previously the distinction between unevaluated constants in the type-system and in mir was not explicit and a little confusing. Probably better to introduce its own type for that.
Auto merge of #102165 - matthiaskrgr:rollup-n5oquhe, r=matthiaskrgr
Rollup of 8 pull requests
Successful merges:
- #100734 (Split out async_fn_in_trait into a separate feature)
- #101664 (Note if mismatched types have a similar name)
- #101815 (Migrated the rustc_passes annotation without effect diagnostic infrastructure)
- #102042 (Distribute rust-docs-json via rustup.)
- #102066 (rustdoc: remove unnecessary `max-width` on headers)
- #102095 (Deduplicate two functions that would soon have been three)
- #102104 (Set 'exec-env:RUST_BACKTRACE=0' in const-eval-select tests)
- #102112 (Allow full relro on powerpc64-unknown-linux-gnu)
Instead of relying on a command line parameter, detect if a target
is able to unwind or not.
Ignore tests that require unwinding on targets that don't support it.
I mostly followed the suggestions of `@nagisa` in that issue, ~~however, I wasn't sure how to check stability for the suggestion of "Do not suggest CCs that cannot be used due to them being unstable and feature not being enabled", so I did not implement that point.~~
I haven't contributed to rustc much, please feel free to point out suggestions! For example, the `.map(|s| Symbol::intern(s)).collect::<Vec<_>>()` seems pretty gross performance-wise, but maybe that's OK in error reporting code.
Rollup merge of #102112 - cuviper:powerpc64-full-relro, r=eholk
Allow full relro on powerpc64-unknown-linux-gnu
This was previously limited to partial relro, citing issues on RHEL6,
but that's no longer a supported platform since #95026. We have long
been enabling full relro in RHEL7's own Rust builds for ppc64, without
trouble, so it should be fine to drop this workaround.
Rollup merge of #102042 - LukeMathWalker:add-rust-json-docs-to-rustup, r=Mark-Simulacrum
Distribute rust-docs-json via rustup.
I am not 100% sure on how to treat `rust-json-docs` in `target_host_combination`. I went along with a similar strategy to the one used for `rust-docs`, but looking for guidance there.
Auto merge of #101708 - compiler-errors:issue-101696, r=jackh726
Normalize closure signature after construction
Astconv can't normalize inputs or outputs with escaping bound vars ([see this](https://doc.rust-lang.org/nightly/nightly-rustc/src/rustc_typeck/check/fn_ctxt/mod.rs.html#294)), so normalize them after we've wrapped them in a binder.
Rollup merge of #102144 - chriss0612:const_convert_control_flow, r=scottmcm
Extend const_convert with const {FormResidual, Try} for ControlFlow.
Very small change so I just used the existing `const_convert` feature flag. #88674
Newly const API:
```
impl<B, C> const ops::Try for ControlFlow<B, C>;
impl<B, C> const ops::FromResidual for ControlFlow<B, C>;
```
`@usbalbin` I hope it is ok that I added to your feature.
Rollup merge of #102118 - notriddle:notriddle/line-numbers, r=GuillaumeGomez
rustdoc: clean up line numbers on code examples
* First commit switches from `display: inline-flex; width: 100%` to `display: flex`.
`display: inline-flex` was used as part of https://github.com/rust-lang/rust/commit/e961d397cab900c55f8d8c104648852e2b63664e, the original commit that added these line numbers. Does anyone know why it was done this way?
* Second commit makes it so that toggling this checkbox will update the page in real time, just like changing themes does.
Auto merge of #98840 - cjgillot:span-inline-ctxt, r=wesleywiser
Inline SyntaxContext in both encoded span representation.
The current interned representation for spans does not use the `ctxt_or_zero: u16` field. This PR proposes to use this field to store the `SyntaxContext` of the interned span instead. When `ctxt_or_zero` and the interned span's `ctxt` don't match, the inlined one takes precedence.
This allows to implement `Span::ctxt` and `Span::with_ctxt` with much less probability to access the interner. Those functions are used a lot for hygiene, so this may be worth it.
Auto merge of #102139 - Dylan-DPC:rollup-ljlipt8, r=Dylan-DPC
Rollup of 8 pull requests
Successful merges:
- #101598 (Update rustc's information on Android's sanitizers)
- #102036 (Remove use of `io::ErrorKind::Other` in std)
- #102037 (Make cycle errors recoverable)
- #102069 (Skip `Equate` relation in `handle_opaque_type`)
- #102076 (rustc_transmute: fix big-endian discriminants)
- #102107 (Add missing space between notable trait tooltip and where clause)
- #102119 (Fix a typo “pararmeter” in error message)
- #102131 (Added which number is computed in compute_float.)
The original comment was very elaborate but ultimately did not mention at all what is being computed using parameters `w, q`, only referencing an external article for the algorithm.
Rollup merge of #102076 - cuviper:transmute-discr-endian, r=jackh726
rustc_transmute: fix big-endian discriminants
I noticed that some new tests were failing in Fedora on s390x only, which usually means there's a problem with big-endian, and sure enough there's a FIXME(``@jswrenn)`` for that in `rustc_transmute`. This patch implements the appropriate consideration for target endianness, rather than using native (host) endian.
Rollup merge of #102037 - jyn514:normalize-docs, r=lcnr
Make cycle errors recoverable
In particular, this allows rustdoc to recover from cycle errors when normalizing associated types for documentation.
In the past, ```@jackh726``` has said we need to be careful about overflow errors: https://github.com/rust-lang/rust/pull/91430#issuecomment-983997013
> Off the top of my head, we definitely should be careful about treating overflow errors the same as
"not implemented for some reason" errors. Otherwise, you could end up with behavior that is
different depending on recursion depth. But, that might be context-dependent.
But cycle errors should be safe to unconditionally report; they don't depend on the recursion depth, they will always be an error whenever they're encountered.
Helps with https://github.com/rust-lang/rust/issues/81091.
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