Cleanup: Eliminate ConstnessAnd
This is almost a behaviour-free change and purely a refactoring. "almost" because we appear to be using the wrong ParamEnv somewhere already, and this is now exposed by failing a test using the unstable `~const` feature.
We most definitely need to review all `without_const` and at some point should probably get rid of many of them by using `TraitPredicate` instead of `TraitRef`.
This is a continuation of https://github.com/rust-lang/rust/pull/90274.
r? `@oli-obk`
cc `@spastorino` `@ecstatic-morse`
Deny warnings in rustdoc non-UI tests
These warnings were silently ignored since they did not appear in a
`.stderr` file and did not fail the test. With this change, warnings in
tests are denied, causing the tests to fail if they have warnings.
This change has already led me to find a bug in rustdoc (#91274) and a
useless test (`src/test/rustdoc/primitive/primitive-generic-impl.rs`,
though its uselessness is unrelated to its warnings).
r? `@jyn514`
Take a LocalDefId in expect_*item.
Items and item-likes are always HIR owners.
When trying to find such nodes, there is no ambiguity, the `LocalDefId` and the `HirId::owner` always match.
In such cases, `local_def_id_to_hir_id` does not carry any meaningful information, so we can just skip calling it altogether.
Prior to PR #91205, checking for errors in the overall obligation
would check checking the `ParamEnv`, due to an incorrect
`super_visit_with` impl. With this bug fixed, we will now
bail out of impl candidate assembly if the `ParamEnv` contains
any error types.
In practice, this appears to be overly conservative - when an error
occurs early in compilation, we end up giving up early for some
predicates that we could have successfully evaluated without overflow.
By only checking for errors in the predicate itself, we avoid causing
additional spurious 'type annotations needed' errors after a 'real'
error has already occurred.
With this PR, the diagnostic changes caused by PR #91205 are reverted.
These warnings were silently ignored since they did not appear in a
`.stderr` file and did not fail the test. With this change, warnings in
tests are denied, causing the tests to fail if they have warnings.
I will fix all the warnings that are now test failures next.
Visit `param_env` field in Obligation's `TypeFoldable` impl
This oversight appears to have gone unnoticed for a long time
without causing issues, but it should still be fixed.
Diagnostic tweaks
* On type mismatch caused by assignment, point at the source of the expectation
* Hide redundant errors
* Suggest `while let` when `let` is missing in some cases
Tokenize emoji as if they were valid identifiers
In the lexer, consider emojis to be valid identifiers and reject
them later to avoid knock down parse errors.
Partially address #86102.
Update cargo
7 commits in ad50d0d266213e0cc4f6e526a39d96faae9a3842..e1fb17631eb1b3665cdbe45b1c186111577ef512
2021-11-17 18:36:37 +0000 to 2021-11-22 16:53:06 +0000
- re-enable lto_build test on 32-bit MSVC (rust-lang/cargo#10110)
- Fix a couple issues with cyclic features and dev-dependencies (rust-lang/cargo#10103)
- Add --message-format for install command (rust-lang/cargo#10107)
- Update curl dependency, remove M1 macOS build error note (rust-lang/cargo#10106)
- Make clippy happy (rust-lang/cargo#10105)
- Give a hard error if `-Zrustdoc-scrape-examples` is missing a flag (rust-lang/cargo#10043)
- silly fix, pointer to the empty slice (rust-lang/cargo#10097)
Set color for <a> in a more straightforward way.
Previously, we set the default color for <a> tags to black, and then had an override with a bunch of not() clauses to set anchors in
docblocks to blue.
Instead, we should set the default color for <a> to blue (or equivalent in other themes), and override it for places like the sidebar or search results, where we don't want them to be styled as links.
Demo at https://rustdoc.crud.net/jsha/theme-anchor/std/string/struct.String.html. This should result in no visible changes.
r? `@GuillaumeGomez`
Fix `non-constant value` ICE (#90878)
This also fixes the same suggestion, which was kind of broken, because it just searched for the last occurence of `const` to replace with a `let`. This works great in some cases, but when there is no const and a leading space to the file, it doesn't work and panic with overflow because it thought that it had found a const.
I also changed the suggestion to only trigger if the `const` and the non-constant value are on the same line, because if they aren't, the suggestion is very likely to be wrong.
Also don't trigger the suggestion if the found `const` is on line 0, because that triggers the ICE.
Asking Esteban to review since he was the last one to change the relevant code.
r? ``@estebank``
Fixes#90878
This function parameter attribute was introduced in https://github.com/rust-lang/rust/pull/44866 as an intermediate step in implementing `impl Trait`, it's not necessary or used anywhere by itself.
Update cargo
11 commits in 2e2a16e983f597da62bc132eb191bc3276d4b1bb..ad50d0d266213e0cc4f6e526a39d96faae9a3842
2021-11-08 15:13:38 +0000 to 2021-11-17 18:36:37 +0000
- Warn when alias shadows external subcommand (rust-lang/cargo#10082)
- Implement escaping to allow clean -p to delete all files when directory contains glob characters (rust-lang/cargo#10072)
- Match any error when failing to find executables (rust-lang/cargo#10092)
- Enhance error message for target auto-discovery (rust-lang/cargo#10090)
- Include note about bug while building on macOS in mdbook (rust-lang/cargo#10073)
- Improve the help text of the --quiet args for all commands (rust-lang/cargo#10080)
- `future-incompat-report` checks both stdout and stderr for color support (rust-lang/cargo#10024)
- Remove needless borrow to make clippy happy (rust-lang/cargo#10081)
- Describe the background color of the timing graph (rust-lang/cargo#10076)
- Make ProfileChecking comments a doc comments (rust-lang/cargo#10077)
- Fix test: hash value depends on endianness and bitness. (rust-lang/cargo#10011)
Print escaped string if char literal has multiple characters, but only one printable character
Fixes#90857
I'm not sure about the error message here, it could get rather long and *maybe* using the names of characters would be better? That wouldn't help the length any, though.
Alphabetize language features
This should significantly reduce the frequency of merge conflicts.
r? ````@joshtriplett````
````@rustbot```` label: +A-contributor-roadblock +S-waiting-on-review
