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Rollup of 7 pull requests
Successful merges:
- #92058 (Make Run button visible on hover)
- #92288 (Fix a pair of mistyped test cases in `std::net::ip`)
- #92349 (Fix rustdoc::private_doc_tests lint for public re-exported items)
- #92360 (Some cleanups around check_argument_types)
- #92389 (Regression test for borrowck ICE #92015)
- #92404 (Fix font size for [src] links in headers)
- #92443 (Rustdoc: resolve associated traits for non-generic primitive types)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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r=Manishearth
Rustdoc: resolve associated traits for non-generic primitive types
Fixes #90703
This seems to work:
<img width="457" alt="image" src="https://user-images.githubusercontent.com/2807772/147774059-9556ff96-4519-409e-8ed0-c33ecc436171.png">
I'm just afraid I might have missed some cases / broken previous functionality.
I also have not written tests yet, I will have to take a look to see where tests are and how they are structured, but any help there is also appreciated.
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Fix font size for [src] links in headers
Fixes #90384.
cc `@jsha`
r? `@camelid`
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Regression test for borrowck ICE #92015
This issue has come up a few times. Creating a regression test.
Closes #92015.
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Some cleanups around check_argument_types
Split out in ways from my rebase/continuation of #71827
Commits are mostly self-explanatory and these changes should be fairly straightforward
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Fix rustdoc::private_doc_tests lint for public re-exported items
Closes #72081
This involves changing the lint to check the access level is exported, rather than public.
The [exported access level](https://github.com/rust-lang/rust/blob/e91ad5fc62bdee4a29c18baa5fad2ca42fc91bf4/compiler/rustc_middle/src/middle/privacy.rs#L24) accounts for public items and items accessible to other crates with the help of `pub use` re-exports.
The pattern of re-exporting public items from a private module is usage seen in a number of popular crates.
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Make Run button visible on hover
This slightly reduces the noisiness of doc pages, making them easier to read.
Demo: https://rustdoc.crud.net/jsha/run-on-hover/std/string/struct.String.html
[Discussed on Zulip](https://rust-lang.zulipchat.com/#narrow/stream/266220-rustdoc/topic/.22Run.22.20button.20visible.20on.20hover).
Part of #59845
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This reverts commit 241160de72b5b55187ca54243e2a6e82e336d07c.
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`thorin` is a Rust implementation of a DWARF packaging utility that
supports reading DWARF objects from archive files (i.e. rlibs) and
therefore is better suited for integration into rustc.
Signed-off-by: David Wood <david.wood@huawei.com>
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In #79570, `-Z split-dwarf-kind={none,single,split}` was replaced by `-C
split-debuginfo={off,packed,unpacked}`. `-C split-debuginfo`'s packed
and unpacked aren't exact parallels to single and split, respectively.
On Unix, `-C split-debuginfo=packed` will put debuginfo into object
files and package debuginfo into a DWARF package file (`.dwp`) and
`-C split-debuginfo=unpacked` will put debuginfo into dwarf object files
and won't package it.
In the initial implementation of Split DWARF, split mode wrote sections
which did not require relocation into a DWARF object (`.dwo`) file which
was ignored by the linker and then packaged those DWARF objects into
DWARF packages (`.dwp`). In single mode, sections which did not require
relocation were written into object files but ignored by the linker and
were not packaged. However, both split and single modes could be
packaged or not, the primary difference in behaviour was where the
debuginfo sections that did not require link-time relocation were
written (in a DWARF object or the object file).
This commit re-introduces a `-Z split-dwarf-kind` flag, which can be
used to pick between split and single modes when `-C split-debuginfo` is
used to enable Split DWARF (either packed or unpacked).
Signed-off-by: David Wood <david.wood@huawei.com>
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Rollup of 7 pull requests
Successful merges:
- #92092 (Drop guards in slice sorting derive src pointers from &mut T, which is invalidated by interior mutation in comparison)
- #92388 (Fix a minor mistake in `String::try_reserve_exact` examples)
- #92442 (Add negative `impl` for `Ord`, `PartialOrd` on `LocalDefId`)
- #92483 (Stabilize `result_cloned` and `result_copied`)
- #92574 (Add RISC-V detection macro and more architecture instructions)
- #92575 (ast: Always keep a `NodeId` in `ast::Crate`)
- #92583 (:arrow_up: rust-analyzer)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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This slightly reduces the noisiness of doc pages, making them easier to
read.
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:arrow_up: rust-analyzer
r? `@ghost`
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ast: Always keep a `NodeId` in `ast::Crate`
This makes it more uniform with other expanded nodes.
It makes generic code in https://github.com/rust-lang/rust/pull/92573 simpler in particular.
This is another follow-up to https://github.com/rust-lang/rust/pull/91313.
r? `@Aaron1011`
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Rollup of 7 pull requests
Successful merges:
- #92182 (Label more build steps)
- #92188 (rustdoc: Clean up NestedAttributesExt trait/implementation)
- #92322 (Add another implementation example to Debug trait)
- #92448 (Set font size proportional to user's font size)
- #92517 (Explicitly pass `PATH` to the Windows exe resolver)
- #92545 (Extract init_env_logger to crate)
- #92579 (update Miri)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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update Miri
Fixes https://github.com/rust-lang/rust/issues/92527
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Set font size proportional to user's font size
According to MDN (https://developer.mozilla.org/en-US/docs/Web/CSS/font-size),
> To maximize accessibility, it is generally best to use values that are relative to the user's default font size.
> Defining font sizes in px is not accessible, because the user cannot change the font size in some browsers.
Note that changing font size (in browser or OS settings) is distinct from the zoom functionality triggered with Ctrl/Cmd-+. Zoom
functionality increases the size of everything on the page, effectively applying a multiplier to all pixel sizes. Font size changes apply to just text.
For relative font sizes, we could use `em`, as we do in several places already. However that has a problem of "compounding" (see MDN article for details). The compounding problem is nicely solved by `rem`, which make font sizes relative to the root element, not the parent element.
Since we were using a hodge-podge of pixel sizes, em, rem, and percentage sizes before, this change switches everything to rem, while keeping the same size relative to our old default of 16px.
16px is still the default on most browsers, for users that haven't set a larger or smaller font size.
Part of #59845. Note: this will conflict with #92404. We should merge that first (once it's done) and I'll resolve the merge conflicts.
r? `@GuillaumeGomez`
Demo: https://rustdoc.crud.net/jsha/font-size-access/std/string/struct.String.html
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rustdoc: Clean up NestedAttributesExt trait/implementation
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Label more build steps
Some small improvements.
r? ```@Mark-Simulacrum```
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Do not hash leading zero bytes of i64 numbers in Sip128 hasher
I was poking into the stable hasher, trying to improve its performance by compressing the number of hashed bytes. First I was experimenting with LEB128, but it was painful to implement because of the many assumptions that the SipHasher makes, so I tried something simpler - just ignoring leading zero bytes. For example, if an 8-byte integer can fit into a 4-byte integer, I will just hash the four bytes.
I wonder if this could produce any hashing ambiguity. Originally I thought so, but then I struggled to find any counter-example where this could cause different values to have the same hash. I'd be glad for any examples that could be broken by this (there are some ways of mitigating it if that would be the case). It could happen if you had e.g. 2x `u8` vs 1x `u16` hashed after one another in two different runs, but that can also happen now, without this "trick". And with collections, it should be fine, because the length is included in their hash.
I gathered some statistics for common values used in the `clap` benchmark. I observed that especially `i64` often had very low values, so I started with that type, let's see what perf does on CI.
There are some tradeoffs that we can try:
1) What types to use this optimization for? `u64`, `u32`, `u16`? Locally it was a slight loss for `u64`, I noticed that its values are often quite large.
2) What byte sizes to check? E.g. we can only distinguish between `u64`/`u32` or `u64`/`u8` instead of `u64`/`u32`/`u16`/`u8` to reduce branching (with `i64` it seemed to be better to go all the way down to `u8` locally though).
(The macro was introduced because I expect that I will be trying out this "trick" for different types).
Can you please schedule a perf. run? Thanks.
r? `@the8472`
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This makes it more uniform with other expanded nodes
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Fixes #90703
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Ignore flaky `panic-short-backtrace-windows-x86_64.rs` test for now
Mitigates (but does not fix) #92000.
It has been causing a lot of spurious test failures recently that slow
down the bors queue.
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It has been causing a lot of spurious test failures recently that slow
down the bors queue.
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Update cargo
10 commits in fcef61230c3b6213b6b0d233a36ba4ebd1649ec3..358e79fe56fe374649275ca7aebaafd57ade0e8d
2021-12-17 02:30:38 +0000 to 2022-01-04 18:39:45 +0000
- Make rmeta_required no longer depend on whether timing is enabled (rust-lang/cargo#10254)
- The first version of pull request template (rust-lang/cargo#10218)
- Stabilize the `strip` profile option, now that rustc has stable `-C strip` (rust-lang/cargo#10088)
- Update docs for windows ssh-agent. (rust-lang/cargo#10248)
- Fix typo: substract -> subtract (rust-lang/cargo#10244)
- timings: Fix tick mark alignment (rust-lang/cargo#10239)
- Remove unused lifetimes (rust-lang/cargo#10238)
- Make levenshtein distance case insensitive. (rust-lang/cargo#10224)
- [docs] Adds basic CI yaml for GitHub Actions (rust-lang/cargo#10212)
- Add function for parsing already-read manifest (rust-lang/cargo#10209)
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Rollup of 7 pull requests
Successful merges:
- #91587 (core::ops::unsize: improve docs for DispatchFromDyn)
- #91907 (Allow `_` as the length of array types and repeat expressions)
- #92515 (RustWrapper: adapt for an LLVM API change)
- #92516 (Do not use deprecated -Zsymbol-mangling-version in bootstrap)
- #92530 (Move `contains` method of Option and Result lower in docs)
- #92546 (Update books)
- #92551 (rename StackPopClean::None to Root)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Update books
## reference
3 commits in 06f9e61931bcf58b91dfe6c924057e42ce273ee1..f8ba2f12df60ee19b96de24ae5b73af3de8a446b
2021-12-17 07:31:40 -0800 to 2022-01-03 11:02:08 -0800
- Switch the default edition for examples to 2021 (rust-lang/reference#1125)
- Clarify behavior of x87 FP registers in inline assembly (rust-lang/reference#1126)
- Add inline assembly to the reference (rust-lang/reference#1105)
## book
36 commits in 8a0bb3c96e71927b80fa2286d7a5a5f2547c6aa4..d3740fb7aad0ea4a80ae20f64dee3a8cfc0c5c3c
2021-12-22 20:54:27 -0500 to 2022-01-03 21:46:04 -0500
- Add a concrete example of an optional value. Fixes rust-lang/book#2848.
- match isn't really an operator. Fixes rust-lang/book#2859
- Edits to edits of chapter 6
- Make fixes recommended by shellcheck
- Use shellcheck
- SIGH fix all the typos that were missed while spellcheck was broken
- SIGH add all the words to the dictionary that were missed while spellcheck was broken
- Remove test_harness from the dictionary
- sigh, the xkcd sandwich one
- Install aspell in CI
- set -eu in all bash scripts
- typo: assignement -> assignment
- Fix quotes
- Snapshot of ch12 for nostarch
- Use 'static lifetime earlier because that's more correct. Fixes rust-lang/book#2864.
- Add does_not_compile annotation to intermediate steps that don't compile
- Sidestep who provides output streams. Fixes rust-lang/book#2933.
- Remove note about primitive obsession. Fixes rust-lang/book#2863.
- Remove sentence encouraging writing tests on your own. Fixes rust-lang/book#2223.
- Bump mdBook version to 0.4.14 in workflow main.yml
- Past tense make better sense
- Past tense makes better sense
- Update the edition in all the listings' Cargo.toml
- Update the book to either say 2021 edition or not talk about editions
- Remove most of the 2018 edition text from the title page. Fixes rust-lang/book#2852.
- Fix word wrapping
- Emphasize return type is mandatory
- fix title capitalization
- Further edits to mention of --include-ignored, propagate to src
- feat: mention `cargo test -- --include-ignored`
- wording: get rid of "to from"
- interchanged position of `binary` and `library`
- Fix wrong word typo
- Further edits in rust-analyzer text
- appendix-04 IDE integration: Replaced rls by rust-analyzer
- Update link to Italian translation. Connects to rust-lang/book#2484.
## rustc-dev-guide
3 commits in 9bf0028b557798ddd07a6f652e4d0c635d3d6620..875464457c4104686faf667f47848aa7b0f0a744
2021-12-20 21:53:57 +0900 to 2021-12-28 22:17:49 -0600
- Update link to moved section (rust-lang/rustc-dev-guide#1282)
- Fix link in contributing.md (rust-lang/rustc-dev-guide#1280)
- Streamline "Getting Started" (rust-lang/rustc-dev-guide#1279)
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Do not use deprecated -Zsymbol-mangling-version in bootstrap
`-Zsymbol-mangling-version` now produces warnings unconditionally. So if you want to use legacy mangling for the compiler (`new-symbol-mangling = false` in `config.toml`), the build is now littered with warnings.
However, with this change, stage 1 `std` doesn't compile:
```
error: `-C symbol-mangling-version=legacy` requires `-Z unstable-options`
```
Even after the bootstrap compiler is updated and it will support `-Csymbol-mangling-version`, the bootstrap code would either need to use `-Z` for the legacy mangling or use `-C` in combination with `-Z unstable-options` (because `-C` + legacy is not allowed without the unstable options). Should we just add `-Z unstable-options` to `std` compilation to resolve this?
Btw I use legacy mangling because the new mangling is not supported by [Hotspot](https://github.com/KDAB/hotspot).
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Allow `_` as the length of array types and repeat expressions
r? `@BoxyUwU` cc `@varkor`
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Suggest single quotes when char expected, str provided
If a type mismatch occurs where a char is expected and a string literal is provided, suggest changing the double quotes to single quotes.
We already provide this suggestion in the other direction ( ' -> " ).
Especially useful for new rust devs used to a language in which single/double quotes are interchangeable.
Fixes #92479.
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Remove special-cased stable hashing for HIR module
All other 'containers' (e.g. `impl` blocks) hashed their contents
in the normal, order-dependent way. However, `Mod` was hashing
its contents in a (sort-of) order-independent way. However, the
exact order is exposed to consumers through `Mod.item_ids`,
and through query results like `hir_module_items`. Therefore,
stable hashing needs to take the order of items into account,
to avoid fingerprint ICEs.
Unforuntately, I was unable to directly build a reproducer
for the ICE, due to the behavior of `Fingerprint::combine_commutative`.
This operation swaps the upper and lower `u64` when constructing the
result, which makes the function non-associative. Since we start
the hashing of module items by combining `Fingerprint::ZERO` with
the first item, it's difficult to actually build an example where
changing the order of module items leaves the final hash unchanged.
However, this appears to have been hit in practice in #92218
While we're not able to reproduce it, the fact that proc-macros
are involved (which can give an entire module the same span, preventing
any span-related invalidations) makes me confident that the root
cause of that issue is our method of hashing module items.
This PR removes all of the special handling for `Mod`, instead deriving
a `HashStable` implementation. This makes `Mod` consistent with other
'contains' like `Impl`, which hash their contents through the typical
derive of `HashStable`.
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They're a bit out of date, and overly complicated.
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Currently the output of a command like `./x.py build --stage 0 library/std` is this:
```
Updating only changed submodules
Submodules updated in 0.02 seconds
extracting [...]
Compiling [...]
Finished dev [unoptimized] target(s) in 17.53s
Building stage0 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compling [...]
Finished release [optimized + debuginfo] target(s) in 21.99s
Copying stage0 std from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Build completed successfully in 0:00:51
```
I find the part before the "Building stage0 std artifacts" a bit confusing.
After this commit, it looks like this:
```
Updating only changed submodules
Submodules updated in 0.02 seconds
extracting [...]
Building rustbuild
Compiling [...]
Finished dev [unoptimized] target(s) in 17.53s
Building stage0 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compling [...]
Finished release [optimized + debuginfo] target(s) in 21.99s
Copying stage0 std from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Build completed successfully in 0:00:51
```
The "Building rustbuild" label makes it clear what the first cargo build
invocation is for. The indentation of the "Submodules updated" line
indicates it is a sub-step of a parent task.
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Rollup of 6 pull requests
Successful merges:
- #90102 (Remove `NullOp::Box`)
- #92011 (Use field span in `rustc_macros` when emitting decode call)
- #92402 (Suggest while let x = y when encountering while x = y)
- #92409 (Couple of libtest cleanups)
- #92418 (Fix spacing in pretty printed PatKind::Struct with no fields)
- #92444 (Consolidate Result's and Option's methods into fewer impl blocks)
Failed merges:
- #92483 (Stabilize `result_cloned` and `result_copied`)
r? `@ghost`
`@rustbot` modify labels: rollup
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Consolidate Result's and Option's methods into fewer impl blocks
`Result`'s and `Option`'s methods have historically been separated up into `impl` blocks based on their trait bounds, with the bounds specified on type parameters of the impl block. I find this unhelpful because closely related methods, like `unwrap_or` and `unwrap_or_default`, end up disproportionately far apart in source code and rustdocs:
<pre>
impl<T> Option<T> {
pub fn unwrap_or(self, default: T) -> T {
...
}
<img alt="one eternity later" src="https://user-images.githubusercontent.com/1940490/147780325-ad4e01a4-c971-436e-bdf4-e755f2d35f15.jpg" width="750">
}
impl<T: Default> Option<T> {
pub fn unwrap_or_default(self) -> T {
...
}
}
</pre>
I'd prefer for method to be in as few impl blocks as possible, with the most logical grouping within each impl block. Any bounds needed can be written as `where` clauses on the method instead:
```rust
impl<T> Option<T> {
pub fn unwrap_or(self, default: T) -> T {
...
}
pub fn unwrap_or_default(self) -> T
where
T: Default,
{
...
}
}
```
*Warning: the end-to-end diff of this PR is computed confusingly by git / rendered confusingly by GitHub; it's practically impossible to review that way. I've broken the PR into commits that move small groups of methods for which git behaves better — these each should be easily individually reviewable.*
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Fix spacing in pretty printed PatKind::Struct with no fields
Follow-up to #92238 fixing one of the FIXMEs.
```rust
macro_rules! repro {
($pat:pat) => {
stringify!($pat)
};
}
fn main() {
println!("{}", repro!(Struct {}));
}
```
Before: <code>Struct { }</code>
After: <code>Struct {}</code>
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Suggest while let x = y when encountering while x = y
Extends #75931 to also detect where the `let` might be missing from `while let` expressions.
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Remove `NullOp::Box`
Follow up of #89030 and MCP rust-lang/compiler-team#460.
~1 month later nothing seems to be broken, apart from a small regression that #89332 (1aac85bb716c09304b313d69d30d74fe7e8e1a8e) shows could be regained by remvoing the diverging path, so it shall be safe to continue and remove `NullOp::Box` completely.
r? `@jonas-schievink`
`@rustbot` label T-compiler
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