Do not accept the following
```rust
macro_rules! lexes {($($_:tt)*) => {}}
lexes!(🐛"foo");
```
Before, invalid emoji identifiers were gated during parsing instead of lexing in all cases, but this didn't account for macro expansion of literal prefixes.
Fix#123696.
According to <https://caniuse.com/?search=svg%20favicon>,
SVG favicons are supported in everything but Safari.
When I actually try it in Safari, it's downloading all
three favicons, and nothing looks different when I disable
the 16x16 one.
<https://dev.to/masakudamatsu/favicon-nightmare-how-to-maintain-sanity-3al7>,
which is linked from caniuse above, recommends an ico.
However, the reason they recommend it is the apps that
only support /favicon.ico exactly, and rustdoc can't assume
it will be installed to the site root, so it's unfortunately
up to the webmaster to make sure it's set up.
Don't use bytepos offsets when computing semicolon span for removal
Causes problems when we recover confusable characters w/ a different byte width
Fixes#123607
Clean up tests/ui by removing `does-nothing.rs`
In [a previous PR](https://github.com/rust-lang/rust/pull/123297#issuecomment-2039887806), it was suggested that this test be removed:
> it's testing a basic diagnostic for an unknown variable (added over a decade ago for https://github.com/rust-lang/rust/issues/154) that is already covered by probably dozens or hundreds of other tests.
It was then suggested that [opening a new PR](https://github.com/rust-lang/rust/pull/123563#discussion_r1554654102) for this would be more organized.
I'm setting this as a draft, as:
1. The tests/ui directory is rather disorganized, a large quantity of tests are not even contained inside their own directories. This PR could turn into "clean up the UI tests directory", if I were to place everything into categories (for example, everything related to CLI flags could get placed in a cli directory).
2. This will have a merge conflict with #123563 should that get merged. I trust that _this time_, I won't run into [The Incident](https://github.com/rust-lang/rust/pull/123297#issuecomment-2041137569) while rebasing. Edit: Yay, I did it properly!
Port exit-code run-make test to use rust
As part of https://github.com/rust-lang/rust/issues/121876
~~As draft because formatting will fail because `x fmt` isn't working for me for some reason, I'll debug that later, just opening this now for review, will mark as ready when formatting is fixed~~ (misleading message from x fmt)
cc `@jieyouxu`
compiletest: unset `RUSTC_LOG_COLOR`
If this leaks in from the environment then it can make tests fail when they deliberately trigger `WARN` or `ERROR` logging, currently this stops these tests from failing if you set `RUSTC_LOG_COLOR=always` in the parent environment:
- `tests/ui/coherence/occurs-check/associated-type.rs#next`
- `tests/ui/coherence/occurs-check/associated-type.rs#old`
- `tests/ui/higher-ranked/structually-relate-aliases.rs`
- `tests/ui/self/arbitrary-self-from-method-substs.rs#default`
- `tests/ui/traits/next-solver/issue-118950-root-region.rs`
rustdoc: synthetic auto: filter out clauses from the implementor's ParamEnv
... not just the elaborated clauses.
Fixes another regression introduced by me in #123340, oops!
Fixes https://github.com/rust-lang/rust/pull/123340#issuecomment-2034195786, cc ``@tamird.``
An earlier local iteration of branch `rustdoc-simplify-auto-trait-impl-synth` (PR #123340) contained a fix for issue #111101 before I decided to limit the scope. I must've introduced this bug when manually reverting that part of the code.
r? ``@GuillaumeGomez`` or rustdoc
Add MC/DC support to coverage test tools
Extracted and squashed from #123409 by `@ZhuUx.`
These updates to the coverage test tools can land ahead of the main changes, slightly reducing the size and complexity of that PR.
---
The `coverage-dump` changes aren't directly tested in this PR, but the tests in #123409 demonstrate that they do work on real MC/DC coverage output.
`@rustbot` label +A-code-coverage
If this leaks in from the environment then it can make tests fail when
they deliberately trigger `WARN` or `ERROR` logging.
Signed-off-by: David Wood <david@davidtw.co>
Fix UI tests with dist-vendored dependencies
There is already a workaround in `compiletest` to deal with custom
`CARGO_HOME` using `-Zignore-directory-in-diagnostics-source-blocks={}`.
A similar need exists when dependencies come from the local `vendor`
directory, which distro builds often use, so now we ignore that too.
Also, `issue-21763.rs` was normalizing `hashbrown-` paths, presumably
expecting a version suffix, but the vendored path doesn't include the
version. Now that matches `[\\/]hashbrown` instead.
rustdoc: slightly clean up the synthesis of blanket impls
Small follow-up to #123340 as promised in https://github.com/rust-lang/rust/pull/123340#discussion_r1546918604. No functional changes whatsoever.
* inline the over-engineered “type namespace” (struct) `BlanketImplFinder` just like I did with `AutoTraitFinder` in #123340
* use the new `synthesize_*` terminology over the old nondescript / misleading `get_*` one
* inline a `use super::*;` (not super modular, lead to `clean/mod.rs` (!) accumulating cruft)
* use `tracing` properly
r? GuillaumeGomez or rustdoc
Update books
## rust-lang/book
23 commits in 19c40bfd2d57641d962f3119a1c343355f1b3c5e..3131aa4642c627a24f523c82566b94a7d920f68c
2024-04-05 22:09:59 UTC to 2024-03-27 18:14:05 UTC
- Correct the description of Listing 5-6 (rust-lang/book#3878)
- Minor text improvements (rust-lang/book#3790)
- Update full code reference main.rs in ch20-03 (rust-lang/book#3857)
- Make Note text in ch. 20 consistent with other notes (rust-lang/book#3876)
- Consistency fix: start note sentence with a capital (rust-lang/book#3652)
- Update README.md (rust-lang/book#3656)
- Update panic! formatting style for Guess example (rust-lang/book#3767)
- Small correction in ch13-01 (rust-lang/book#3780)
- Fix a wording typo in ch07 (rust-lang/book#3694)
- Fix a typo: remove an extra 's' from ch. 18.01 (rust-lang/book#3874)
- Remove redundant words (rust-lang/book#3672)
- Fix#3703 (rust-lang/book#3704)
- Update loop to Result: 10 (rust-lang/book#3711)
- Added "--" between run and args on ch12-03-l12 (rust-lang/book#3726)
- Add maintenance time section in appendix-07-nightly-rust.md (rust-lang/book#3859)
- Update the link to the farsi translation repository (rust-lang/book#3839)
- Update README to use --locked for installing mdbook (rust-lang/book#3830)
- Reword "`union`s" to "a `union`" (rust-lang/book#3738)
- Fix two typos in 04-03 and 07-03 (rust-lang/book#3849)
- Fix typo in Chapter 7 Section 3 (rust-lang/book#3743)
- Improve ch03-05-control-flow collection looping wording (rust-lang/book#3758)
- Fix missing column separator (rust-lang/book#3855)
- Update compiler message (rust-lang/book#3856)
## rust-lang/edition-guide
3 commits in 98b33e9a441457b0a491fe1be90e7de64eafc3e5..eb3eb80e106d03250c1fb7c5666b1c8c59672862
2024-03-27 20:44:27 UTC to 2024-03-26 19:26:15 UTC
- some mdbook conveniences (rust-lang/edition-guide#297)
- typo (rust-lang/edition-guide#296)
- Clean up the `editions/index.md` page (rust-lang/edition-guide#294)
## rust-embedded/book
1 commits in 2e95fc2fd31d669947e993aa07ef10dc9828bee7..aa7d4b0b4653ddb47cb1de2036d090ec2ba9dab1
2024-04-05 07:42:54 UTC to 2024-04-05 07:42:54 UTC
- Dependencies: changed "qemu-arch-extra" to "qemu-system-arm" on arch section (rust-embedded/book#368)
## rust-lang/nomicon
2 commits in 6bc2415218d4dd0cb01433d8320f5ccf79c343a1..0d5f88475fe285affa6dbbc806e9e44d730797c0
2024-04-06 13:51:11 UTC to 2024-04-03 02:23:07 UTC
- chore: fix typo (rust-lang/nomicon#448)
- add link to reference about undefined behavior (rust-lang/nomicon#447)
## rust-lang/reference
3 commits in 984b36eca4b9293df04d5ba4eb5c4f77db0f51dc..55694913b1301cc809f9bf4a1ad1b3d6920efbd9
2024-04-03 21:31:14 UTC to 2024-04-01 19:56:13 UTC
- Add the `#[diagnostic]` attribute namespace and the `#[diagnostic::on_unimplemented]` feature to the reference (rust-lang/reference#1449)
- type-layout: be more specific about 32-bit alignments (rust-lang/reference#1393)
- Fix clippy warning in procedural macro example (rust-lang/reference#1488)
## rust-lang/rust-by-example
1 commits in 7601e0c5ad29d5bd3b518700ea63fddfff5915a7..60d34b5fd33db1346f9aabfc0c9d0bda6c8e42be
2024-04-07 13:00:53 UTC to 2024-04-07 13:00:53 UTC
- chore: fix some typos (rust-lang/rust-by-example#1833)
## rust-lang/rustc-dev-guide
11 commits in ffa246b7fd95a96e1cd54883e613aed42c32547d..b77a34bd46399687b4ce6a17198e9f316c988794
2024-04-06 20:41:09 UTC to 2024-03-27 08:49:05 UTC
- Explicitly mention compiletest directives are supported in rmake.rs (rust-lang/rustc-dev-guide#1949)
- Add docs for sharded descriptions (rust-lang/rustc-dev-guide#1959)
- Add basic docs for the new `aux-bin` header (rust-lang/rustc-dev-guide#1942)
- Add needs-threads header command (rust-lang/rustc-dev-guide#1943)
- Fix some broken links under bootstrapping. (rust-lang/rustc-dev-guide#1958)
- Replace -Zno-parallel-llvm with -Zno-parallel-backend (rust-lang/rustc-dev-guide#1957)
- Rewrite the `Parameter Environments` chapter (rust-lang/rustc-dev-guide#1953)
- Add quickstart for how to build and run the compiler (rust-lang/rustc-dev-guide#1951)
- Delete length check (rust-lang/rustc-dev-guide#1952)
- Fix some comments (rust-lang/rustc-dev-guide#1950)
- add opaque-types-region-inference-restrictions (rust-lang/rustc-dev-guide#1948)
[rustdoc] [GUI tests] Make theme switching closer to reality
Better to actually perform actions user do rather than only testing the change through local storage.
As for `browser-ui-test` update: I updated `puppeteer` version (to `0.19.4`) and fixed a bug when displaying the file if it came from an `include`.
r? `@notriddle`
This change uses the same "exact" paths as trait implementors
and type alias inlining to track items with multiple
reachable paths. This way, if you search for `vec`, you get
only the `std` exports of it, and not the one from `alloc`.
It still includes all the items in the search index so that
you can search for them by all available paths. For example,
try `core::option` and `std::option`, and notice that the
results page doesn't show duplicates, but still shows all
the items in their respective crates.
Pass list of defineable opaque types into canonical queries
This eliminates `DefiningAnchor::Bubble` for good and brings the old solver closer to the new one wrt cycles and nested obligations. At that point the difference between `DefiningAnchor::Bind([])` and `DefiningAnchor::Error` was academic. We only used the difference for some sanity checks, which actually had to be worked around in places, so I just removed `DefiningAnchor` entirely and just stored the list of opaques that may be defined.
fixes#108498
fixes https://github.com/rust-lang/rust/issues/116877
* [x] run crater
- https://github.com/rust-lang/rust/pull/122077#issuecomment-2013293931
There is already a workaround in `compiletest` to deal with custom
`CARGO_HOME` using `-Zignore-directory-in-diagnostics-source-blocks={}`.
A similar need exists when dependencies come from the local `vendor`
directory, which distro builds often use, so now we ignore that too.
Also, `issue-21763.rs` was normalizing `hashbrown-` paths, presumably
expecting a version suffix, but the vendored path doesn't include the
version. Now that matches `[\\/]hashbrown` instead.
Implement minimal, internal-only pattern types in the type system
rebase of https://github.com/rust-lang/rust/pull/107606
You can create pattern types with `std::pat::pattern_type!(ty is pat)`. The feature is incomplete and will panic on you if you use any pattern other than integral range patterns. The only way to create or deconstruct a pattern type is via `transmute`.
This PR's implementation differs from the MCP's text. Specifically
> This means you could implement different traits for different pattern types with the same base type. Thus, we just forbid implementing any traits for pattern types.
is violated in this PR. The reason is that we do need impls after all in order to make them usable as fields. constants of type `std::time::Nanoseconds` struct are used in patterns, so the type must be structural-eq, which it only can be if you derive several traits on it. It doesn't need to be structural-eq recursively, so we can just manually implement the relevant traits on the pattern type and use the pattern type as a private field.
Waiting on:
* [x] move all unrelated commits into their own PRs.
* [x] fix niche computation (see 2db07f94f44f078daffe5823680d07d4fded883f)
* [x] add lots more tests
* [x] T-types MCP https://github.com/rust-lang/types-team/issues/126 to finish
* [x] some commit cleanup
* [x] full self-review
* [x] remove 61bd325da19a918cc3e02bbbdce97281a389c648, it's not necessary anymore I think.
* [ ] ~~make sure we never accidentally leak pattern types to user code (add stability checks or feature gate checks and appopriate tests)~~ we don't even do this for the new float primitives
* [x] get approval that [the scope expansion to trait impls](https://rust-lang.zulipchat.com/#narrow/stream/326866-t-types.2Fnominated/topic/Pattern.20types.20types-team.23126/near/427670099) is ok
r? `@BoxyUwU`
