make Condvar, Mutex, RwLock const constructors work with the `unsupported` impl
applying this patch locally to the `rust-src` component fixes #98378
however, the solution seems wrong to me because PR #97791 didn't add any `rustc_const_stable` attribute to underlying implementations like `std::sys::unix::futex`, so I must be missing something about how const-stability is checked ... maybe the `restricted_std` feature (gate?) has an effect?
Auto merge of #98483 - dvtkrlbs:bootstrap-dist, r=jyn514
Distribute bootstrap in CI
This pre-compiles bootstrap from source and adds it to the existing `rust-dev` component. There are two main goals here:
1. Make it faster to build rust from source, both the first time and incrementally
2. Make it easier to add non-python entrypoints, since they can call out to bootstrap directly rather than having to figure out the right flags to pre-compile it. This second part is still in a bit of flux, see the tracking issue below for more information.
There are also several changes to make bootstrap able to run on a machine other than the one it was built (particularly around `config.src` and `config.out` detection). I (`@jyn514)` am slightly concerned these will regress unless tested - maybe we should add an automated test that runs bootstrap in a chroot or something? Unclear whether the effort is worth the test coverage.
Helps with https://github.com/rust-lang/rust/issues/94829.
This rule became redundant in 07e3f998b1ceb4b8d2a7992782e60f5e776aa114. When `#source-sidebar` became nested below `.sidebar`, it went from being `position: fixed` to `position: static`, and according to MDN's [z-index] documentation, this means it has no effect.
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
```
This rule became redundant in 07e3f998b1ceb4b8d2a7992782e60f5e776aa114.
When `#source-sidebar` became nested below `.sidebar`, it went from being
`position: fixed` to `position: static`, and according to MDN's [z-index]
documentation, this means it has no effect.
Michael Howell [Fri, 23 Sep 2022 17:32:17 +0000 (10:32 -0700)]
rustdoc: remove no-op mobile CSS `#source-sidebar { z-index: 11 }`
This rule became redundant in 07e3f998b1ceb4b8d2a7992782e60f5e776aa114.
When `#source-sidebar` became nested below `.sidebar`, it went from being
`position: fixed` to `position: static`, and according to MDN's [z-index]
documentation, this means it has no effect.
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.
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