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Fluent, with all the icu4x it brings in, takes quite some time to
compile. `fluent_messages!` is only needed in further downstream rustc
crates, but is blocking more upstream crates like `rustc_index`. By
splitting it out, we allow `rustc_macros` to be compiled earlier, which
speeds up `x check compiler` by about 5 seconds (and even more after the
needless dependency on `serde_json` is removed from
`rustc_data_structures`).
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This makes it easier to open the messages file while developing on features.
The commit was the result of automatted changes:
for p in compiler/rustc_*; do mv $p/locales/en-US.ftl $p/messages.ftl; rmdir $p/locales; done
for p in compiler/rustc_*; do sed -i "s#\.\./locales/en-US.ftl#../messages.ftl#" $p/src/lib.rs; done
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Instead of loading the Fluent resources for every crate in
`rustc_error_messages`, each crate generates typed identifiers for its
own diagnostics and creates a static which are pulled together in the
`rustc_driver` crate and provided to the diagnostic emitter.
Signed-off-by: David Wood <david.wood@huawei.com>
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add: `lints.rs`
refactor: move `InvalidAtomicOrderingDiag` to `lints.rs`
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This reverts commit 5e44a65517bfcccbe6624a70b54b9f192baa94f3.
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Implement allow-by-default `multiple_supertrait_upcastable` lint
The lint detects when an object-safe trait has multiple supertraits.
Enabled in libcore and liballoc as they are low-level enough that many embedded programs will use them.
r? `@nikomatsakis`
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I removed these in #105291, and subsequently learned they are necessary
for performance.
This commit reinstates them with the new and more descriptive names
`RuntimeCombined{Early,Late}LintPass`, similar to the existing passes
like `BuiltinCombinedEarlyLintPass`. It also adds some comments,
particularly emphasising how we have ways to combine passes at both
compile-time and runtime. And it moves some comments around.
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Because it's always `'tcx`.
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These were enabled by the removal of `-Zno-interleave-lints`.
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Because it complicates lint implementation greatly.
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fix: lint against the functions `LintContext::{lookup_with_diagnostics,lookup,struct_span_lint,lint}`, `TyCtxt::struct_lint_node`, `LintLevelsBuilder::struct_lint`.
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And a couple of other naming tweaks
Related to https://github.com/rust-lang/rust/issues/48054
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I refactored the code:
- Removed handling of methods, as it felt entirely unnecessary
- Removed clippy utils (obviously...)
- Used some shiny compiler features
(let-else is very handy for lints :eyes:)
- I also renamed the lint to `for_loop_over_fallibles` (note: no `s`).
I'm not sure what's the naming convention here, so maybe I'm wrong.
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This reverts commit 2cb9a65684dba47c52de8fa938febf97a73e70a9, reversing
changes made to 750bd1a7ff3e010611b97ee75d30b7cbf5f3a03c.
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On later stages, the feature is already stable.
Result of running:
rg -l "feature.let_else" compiler/ src/librustdoc/ library/ | xargs sed -s -i "s#\\[feature.let_else#\\[cfg_attr\\(bootstrap, feature\\(let_else\\)#"
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Add warning against unexpected --cfg with --check-cfg
This PR adds a warning when an unexpected `--cfg` is specified but not in the specified list of `--check-cfg`.
This is the follow-up PR I mentioned in https://github.com/rust-lang/rust/pull/99519.
r? `@petrochenkov`
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Uplift the `let_underscore` lints from clippy into rustc.
This PR resolves #97241.
This PR adds three lints from clippy--`let_underscore_drop`, `let_underscore_lock`, and `let_underscore_must_use`, which are meant to capture likely-incorrect uses of `let _ = ...` bindings (in particular, doing this on a type with a non-trivial `Drop` causes the `Drop` to occur immediately, instead of at the end of the scope. For a type like `MutexGuard`, this effectively releases the lock immediately, which is almost certainly the wrong behavior)
In porting the lints from clippy I had to copy over a bunch of utility functions from `clippy_util` that these lints also relied upon. Is that the right approach?
Note that I've set the `must_use` and `drop` lints to Allow by default and set `lock` to Deny by default (this matches the same settings that clippy has). In talking with `@estebank` he informed me to do a Crater run (I am not sure what type of Crater run to request here--I think it's just "check only"?)
On the linked issue, there's some discussion about using `must_use` and `Drop` together as a heuristic for when to warn--I did not implement this yet.
r? `@estebank`
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Add `special_module_name` lint
Declaring `lib` as a module is one of the most common beginner mistakes when trying to setup a binary and library target in the same crate. `special_module_name` lints against it, as well as `mod main;`
```
warning: found module declaration for main.rs
--> $DIR/special_module_name.rs:4:1
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LL | mod main;
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= note: a binary crate cannot be used as library
warning: found module declaration for lib.rs
--> $DIR/special_module_name.rs:1:1
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LL | mod lib;
| ^^^^^^^^
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= note: `#[warn(special_module_name)]` on by default
= note: lib.rs is the root of this crate's library target
= help: to refer to it from other targets, use the library's name as the path
```
Note that the help message is not the best in that it doesn't provide an example of an import path (`the_actual_crate_name::`), and doesn't check whether the current file is part of a library/binary target to provide more specific error messages. I'm not sure where this lint would have to be run to access that information.
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by module
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This reverts commit 326646074940222d602f3683d0559088690830f4.
This is the revert against master, the beta revert was already done in #100538.
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Streamline lint checking
The early (AST) and late (HIR) lint checkers have a number of functions that aren't used by rustc or clippy. Might as well remove them -- it's not like there's a canonical API here, as shown by the ad hoc use of `check_foo`/`check_foo_post` combinations.
r? `@cjgillot`
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They're not used by rustc or clippy.
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