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errors: lazily load fallback fluent bundle
Addresses (hopefully) https://github.com/rust-lang/rust/pull/95667#issuecomment-1094794087.
Loading the fallback bundle in compilation sessions that won't go on to emit any errors unnecessarily degrades compile time performance, so lazily create the Fluent bundle when it is first required.
r? `@ghost` (just for perf initially)
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fix: wrong trait import suggestion for T:
The suggestion to bound `T` had an extra `:`.
```rust
fn foo<T:>(t: T) {
t.clone();
}
```
```
error[E0599]: no method named `clone` found for type parameter `T` in the current scope
--> src/lib.rs:2:7
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2 | t.clone();
| ^^^^^ method not found in `T`
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= help: items from traits can only be used if the type parameter is bounded by the trait
help: the following trait defines an item `clone`, perhaps you need to restrict type parameter `T` with it:
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1 | fn foo<T: Clone:>(t: T) {
| ~~~~~~~~
```
Fixes: #95898
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Improve error message in case of missing checksum
# Fixes
#94217
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Improve Rustdoc UI for scraped examples with multiline arguments, fix overflow in line numbers
This PR improves a few aspects of the scrape examples feature in Rustdoc.
* Only function names and not the full call expression are highlighted.
* For call-sites with multiline arguments, the minimized code viewer will scroll to the top of the call-site rather than the middle if the argument is larger than the viewer size, ensuring that the function name is visible.
* This fixes an issue where the line numbers column had a visible x-scroll bar.
r? `@GuillaumeGomez`
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Remove NodeIdHashingMode.
r? `@ghost`
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Use mir constant in thir instead of ty::Const
This is blocked on https://github.com/rust-lang/rust/pull/94059 (does include its changes, the first two commits in this PR correspond to those changes) and https://github.com/rust-lang/rust/pull/93800 being reinstated (which had to be reverted). Mainly opening since `@lcnr` offered to give some feedback and maybe also for a perf-run (if necessary).
This currently contains a lot of duplication since some of the logic of `ty::Const` had to be copied to `mir::ConstantKind`, but with the introduction of valtrees a lot of that functionality will disappear from `ty::Const`.
Only the last commit contains changes that need to be reviewed here. Did leave some `FIXME` comments regarding future implementation decisions and some things that might be incorrectly implemented.
r? `@oli-obk`
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diagnostics: regression test for spurrious "help: store this in the heap"
Closes #82446
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AnthonyMikh:fix-broken-coverage-docs-screenshot-link, r=Dylan-DPC
Fix broken link in coverage tools docs
During stabilization the link to example screenshot wad not updated, making rendered docs somewhat less useful. Move that screenshot from unstable book into rustc docs and make documentation point to that new place. Also remove `/img` in unstable book since there are no more any files there.
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Always use system `python3` on MacOS
This PR includes 2 changes:
1. Always use the system Python found at `/usr/bin/python3` on MacOS
2. Removes the hard requirement on having `python` in your system path if you didn't specify alternatives. The proposed change will instead attempt to find and use in order: `python` -> `python3` -> `python2`. This change isn't strictly necessary but without any change to this check, the original issue inspiring this change will still exist.
Fixes #95204
r? ```@jyn514```
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Loading the fallback bundle in compilation sessions that won't go on to
emit any errors unnecessarily degrades compile time performance, so
lazily create the Fluent bundle when it is first required.
Signed-off-by: David Wood <david.wood@huawei.com>
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Rollup of 7 pull requests
Successful merges:
- #95316 (Rustdoc: Discriminate required and provided associated constants and types)
- #95405 (Move name resolution logic to a dedicated file)
- #95914 (Implement tuples using recursion)
- #95918 (Delay a bug when we see SelfCtor in ref pattern)
- #95970 (Fix suggestions in case of `T:` bounds)
- #95973 (prevent opaque types from appearing in impl headers)
- #95986 (Autolabel library PRs with T-libs)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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rustdoc: Reduce allocations in a `markdown` function
Not `html::markdown` this time, just `markdown`, haha.
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prevent opaque types from appearing in impl headers
cc `@lqd`
opaque types are not distinguishable from their hidden type at the codegen stage. So we could either end up with cases where the hidden type doesn't implement the trait (which will thus ICE) or where the hidden type does implement the trait (so we'd be using its impl instead of the one written for the opaque type). This can even lead to unsound behaviour without unsafe code.
Fixes https://github.com/rust-lang/rust/issues/86411.
Fixes https://github.com/rust-lang/rust/issues/84660.
rebase of #87382 plus some diagnostic tweaks
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Fix suggestions in case of `T:` bounds
This PR fixes a corner case in `suggest_constraining_type_params` that was causing incorrect suggestions.
For the following functions:
```rust
fn a<T:>(t: T) { [t, t]; }
fn b<T>(t: T) where T: { [t, t]; }
```
We previously suggested the following:
```text
...
help: consider restricting type parameter `T`
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1 | fn a<T: Copy:>(t: T) { [t, t]; }
| ++++++
...
help: consider further restricting this bound
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2 | fn b<T>(t: T) where T: + Copy { [t, t]; }
| ++++++
```
Note that neither `T: Copy:` not `where T: + Copy` is a correct bound.
With this commit the suggestions are correct:
```text
...
help: consider restricting type parameter `T`
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1 | fn a<T: Copy>(t: T) { [t, t]; }
| ++++
...
help: consider further restricting this bound
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2 | fn b<T>(t: T) where T: Copy { [t, t]; }
| ++++
```
r? `@compiler-errors`
I've tried fixing #95898 here too, but got too confused with how `suggest_traits_to_import` works and what it does :sweat_smile:
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Delay a bug when we see SelfCtor in ref pattern
Fixes #95878
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r=notriddle,GuillaumeGomez
Rustdoc: Discriminate required and provided associated constants and types
Currently, rustdoc merely separates required and provided associated _functions_ (i.e. methods). This PR extends this to constants (fixes #94652) and types. This makes the documentation of all three kinds of associated items more alike and consistent.
As an aside, associated types may actually be provided / have a default when users enable the unstable feature `associated_type_defaults`.
| Before | After |
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|  |  |
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### `clean::types::ItemKind` modification
* `ItemKind::TypedefItem(.., true)` → `ItemKind::AssocTypeItem(..)`
* `ItemKind::TypedefItem(.., false)` → `ItemKind::TypedefItem(..)`
Further, I added `ItemKind::TyAssoc{Const,Type}Item`, the “required” variant of `ItemKind::Assoc{Const,Type}Item`, analogous to `ItemKind::TyMethodItem` with `ItemKind::MethodItem`. These new variants don't contain new information really, they are just the result of me getting rid of the `Option<_>` field in `AssocConstItem` and `AssocTypeItem`.
**Goal**: Make associated items more consistent.
Originally I thought modifying `ItemKind` was necessary to achieve the new functionality of this PR but in retrospect, it does not. If you don't like the changes to `ItemKind`, I think I _can_ get rid of them.
This change is the root cause of those tiny changes in a lot of different files.
### Concerns and Open Questions
* **breaking changes** to hyperlinks: Some heading IDs change:
* `associated-const` (sic!) -> `{provided,required}-associated-consts`
* `associated-types` -> `{provided,required}-associated-types`
* **verbosity** of the headings _{Required,Provided} Associated {Constants,Types}_
* For some files, I am not sure if the changes I made are correct. So please take extra care when reviewing `conversions.rs` (conversion to JSON), `cache.rs`/`fold_item`, `stripper.rs`/`fold_item`, `check_doc_test_visibility.rs`/`should_have_doc_example`, `collect_intra_doc_links.rs`/`from_assoc_item`
* JSON output: I still map `AssocTypeItem`s to `Typedef` etc. (FIXME)
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Co-authored-by: Michael Goulet <michael@errs.io>
Co-authored-by: Rémy Rakic <remy.rakic+github@gmail.com>
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Closes #82446
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locations in scrape examples.
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Don't test -Cdefault-linker-libraries=yes when cross compiling.
See https://github.com/rust-lang/rust/pull/95727#issuecomment-1096603163 and the five comments below that.
Unblocks #95727.
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[bootstrap] Grab the right FileCheck binary for dist when cross-compiling.
Fixes #95862
We were using the target dir for all the other LLVM tools (`llvm-config`, `llvm-ar`, etc) but the build target dir for `FileCheck`. This meant for targets which are cross-compiled, we were copying the wrong binary.
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rustdoc doctest: include signal number in exit status
Related to #95601
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Co-authored-by: Guillaume Gomez <guillaume1.gomez@gmail.com>
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Rollup of 5 pull requests
Successful merges:
- #95671 (feat: Allow usage of sudo [while not accessing root] in x.py)
- #95716 (sess: warn w/out fluent bundle w/ user sysroot)
- #95820 (simplify const params diagnostic on stable)
- #95900 (Fix documentation for wasm32-unknown-unknown)
- #95947 (`impl const Default for Box<[T]>` and `Box<str>`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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simplify const params diagnostic on stable
Resolves #95150
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r=oli-obk
sess: warn w/out fluent bundle w/ user sysroot
Addresses https://github.com/rust-lang/rust/pull/95512#issuecomment-1088467139.
When a custom sysroot is requested, then don't error when translation resources are not found, only warn.
r? `@bjorn3`
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feat: Allow usage of sudo [while not accessing root] in x.py
# Fixes
This PR should fix #93344
# Info
Allows usage of sudo (while not accessing root) in x.py
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Instead of checking only the user provided sysroot or the default (when
no sysroot is provided), search user provided sysroot and then check
default sysroots for locale requested by the user.
Signed-off-by: David Wood <david.wood@huawei.com>
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Fix a bad error message for `relative paths are not supported in visibilities` error
closes #95638
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use `Span::find_ancestor_inside` to get right span in CastCheck
This is a quick fix. This bad suggestion likely lives in other places... but thought it would be useful to fix all of the CastCheck ones first.
Let me know if reviewer would prefer I add more tests for each of the diagnostics in CastCheck, or would like to do a more thorough review of other suggestions that use spans in typeck. I would also be open to further suggestions on how to better expose an API that gives us the "best" span for a diagnostic suggestion.
Fixed #95919
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Fix crate_type attribute to not warn on duplicates
In #88681 I accidentally marked the `crate_type` attribute as only allowing a single attribute. However, multiple attributes are allowed (they are joined together [here](https://github.com/rust-lang/rust/blob/027a232755fa9728e9699337267f6675dfd0a8ba/compiler/rustc_interface/src/util.rs#L530-L542)). This fixes it to not report a warning if duplicates are found.
Closes #95902
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rustdoc: Reduce allocations in a `theme` function
`str::replace` allocates a new `String`...
This could probably be made more efficient, but I think it'd have to be clunky imperative code to achieve that.
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pre-push.sh: Use python3 if python is not found
Since Python 2 has reached EOL, `python` may not be available in certain systems (e.g., recent macOS). We should use `python3` in this case to avoid error like `python: No such file or directory`.
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Document the current MIR semantics that are clear from existing code
This PR adds documentation to places, operands, rvalues, statementkinds, and terminatorkinds that describes their existing semantics and requirements. In many places the semantics depend on the Rust memory model or other T-Lang decisions - when this is the case, it is just noted as such with links to UCG issues where possible. I'm hopeful that none of the documentation added here can be used to justify optimizations that depend on the memory model. The documentation for places and operands probably comes closest to running afoul of this - if people think that it cannot be merged as is, it can definitely also be taken out.
The goal here is to only document parts of MIR that seem to be decided already, or are at least depended on by existing code. That leaves quite a number of open questions - those are marked as "needs clarification." I'm not sure what to do with those in this PR - we obviously can't decide all these questions here. Should I just leave them in as is? Take them out? Keep them in but as `//` instead of `///` comments?
If this is too big to review at once, I can split this up.
r? rust-lang/mir-opt
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fix Layout struct member naming style
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Rollup of 7 pull requests
Successful merges:
- #95008 ([`let_chains`] Forbid `let` inside parentheses)
- #95801 (Replace RwLock by a futex based one on Linux)
- #95864 (Fix miscompilation of inline assembly with outputs in cases where we emit an invoke instead of call instruction.)
- #95894 (Fix formatting error in pin.rs docs)
- #95895 (Clarify str::from_utf8_unchecked's invariants)
- #95901 (Remove duplicate aliases for `check codegen_{cranelift,gcc}` and fix `build codegen_gcc`)
- #95927 (CI: do not compile libcore twice when performing LLVM PGO)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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