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Simplify the arguments to macros generated by the `rustc_queries` proc macro
Very small cleanup. Based on https://github.com/rust-lang/rust/pull/100436 which modifies some of the same code.
r? `@cjgillot`
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Rollup of 11 pull requests
Successful merges:
- #96240 (Stabilize `const_ptr_offset_from`.)
- #99784 (Make forward compatibility lint deprecated_cfg_attr_crate_type_name deny by default)
- #100811 (Fix wrong compiletest filters on Windows)
- #100924 (Smaller improvements of tidy and the unicode generator)
- #100953 (Update documentation for `write!` and `writeln!`)
- #101018 (rustdoc: omit start/end tags for empty item description blocks)
- #101044 (rustdoc: remove unused CSS for `hidden-by-*-hider`)
- #101046 (rustdoc: remove incorrect CSS selector `.impl-items table td`)
- #101057 (Merge implementations of HIR fn_decl and fn_sig.)
- #101062 (rustdoc: remove empty extern_crates and type="text/javascript" on script)
- #101063 (Merge duplicated CSS rules)
Failed merges:
- #101055 (Use smaller span for suggestions)
r? `@ghost`
`@rustbot` modify labels: rollup
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Merge implementations of HIR fn_decl and fn_sig.
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Make forward compatibility lint deprecated_cfg_attr_crate_type_name deny by default
Turns the forward compatibility lint added by #83744 to deprecate `cfg_attr` usage with `#![crate_type]` and `#![crate_name]` attributes into deny by default. Copying the example from #83744:
```Rust
#![crate_type = "lib"] // remains working
#![cfg_attr(foo, crate_type = "bin")] // will stop working
```
Over 8 months have passed since #83744 was merged so I'd say this gives ample time for people to have been warned, so we can make the warning stronger. No usage was found via grep.app except for one, which was in an unmaintained code base that didn't seem to be used in the open source eco system. The crater run conducted in #83744 also didn't show up anything.
cc #91632 - tracking issue for the lint
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Implementation of import_name_type
Fixes #96534 by implementing https://github.com/rust-lang/compiler-team/issues/525
Symbols that are exported or imported from a binary on 32bit x86 Windows can be named in four separate ways, corresponding to the [import name types](https://docs.microsoft.com/en-us/windows/win32/debug/pe-format#import-name-type) from the PE-COFF spec. The exporting and importing binaries must use the same name encoding, otherwise mismatches can lead to link failures due to "missing symbols" or to 0xc0000139 (`STATUS_ENTRYPOINT_NOT_FOUND`) errors when the executable/library is loaded. For details, see the comments on the raw-dylib feature's https://github.com/rust-lang/rust/issues/58713. To generate the correct import libraries for these DLLs, therefore, rustc must know the import name type for each `extern` function, and there is currently no way for users to provide this information.
This change adds a new `MetaNameValueStr` key to the `#[link]` attribute called `import_name_type`, and which accepts one of three values: `decorated`, `noprefix`, and `undecorated`.
A single DLL is likely to export all its functions using the same import type name, hence `import_name_type` is a parameter of `#[link]` rather than being its own attribute that is applied per-function. It is possible to have a single DLL that exports different functions using different import name types, but users could express such cases by providing multiple export blocks for the same DLL, each with a different import name type.
Note: there is a fourth import name type defined in the PE-COFF spec, `IMPORT_ORDINAL`. This case is already handled by the `#[link_ordinal]` attribute. While it could be merged into `import_type_name`, that would not make sense as `#[link_ordinal]` provides per-function information (namely the ordinal itself).
Design decisions (these match the MCP linked above):
* For GNU, `decorated` matches the PE Spec and MSVC rather than the default behavior of `dlltool` (i.e., there will be a leading `_` for `stdcall`).
* If `import_name_type` is not present, we will keep our current behavior of matching the environment (MSVC vs GNU) default for decorating.
* Using `import_name_type` on architectures other than 32bit x86 will result in an error.
* Using `import_name_type` with link kinds other than `"raw-dylib"` will result in an error.
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Rollup of 9 pull requests
Successful merges:
- #100724 (Migrate ast lowering to session diagnostic)
- #100735 (Migrate `rustc_ty_utils` to `SessionDiagnostic`)
- #100738 (Diagnostics migr const eval)
- #100744 (Migrate rustc_mir_dataflow to diagnostic structs)
- #100776 (Migrate `rustc_lint` errors to `SessionDiagnostic`)
- #100817 (sugg: suggest the usage of boolean value when there is a typo in the keyword)
- #100836 (Migrate `rustc_attr` crate diagnostics)
- #100890 (Migrate rustc_driver to SessionDiagnostic)
- #100900 (on `region_errors.rs`)
Failed merges:
- #100831 (Migrate `symbol_mangling` module to new diagnostics structs)
r? `@ghost`
`@rustbot` modify labels: rollup
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on `region_errors.rs`
`@rustbot` label +A-translation
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r=davidtwco
Migrate rustc_driver to SessionDiagnostic
First timer noob here 👋🏽 I'm having a problem understanding how I can retrieve the span, and how to properly construct the error structs to avoid the current compilation errors.
Any help pointing me in the right direction would be much appreciated 🙌🏽
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r=davidtwco
Migrate `rustc_attr` crate diagnostics
Hi!
This is my first PR to the rustc project, excited to be part of the development! This PR is part of the diagnostics effort, to make diagnostics translatable.
`@rustbot` label +A-translation
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sugg: suggest the usage of boolean value when there is a typo in the keyword
Fixes https://github.com/rust-lang/rust/issues/100686
This adds a new suggestion when there is a well-known typo
With the following program
```rust
fn main() {
let x = True;
}
```
Now we have the following suggestion
```
error[E0425]: cannot find value `True` in this scope
--> test.rs:2:13
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2 | let x = True;
| ^^^^ not found in this scope
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help: you may want to use a bool value instead
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2 | let x = true;
| ~~~~
error: aborting due to previous error
```
Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
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Migrate `rustc_lint` errors to `SessionDiagnostic`
Draft PR for migrating `rustc_lint` to `SessionDiagnostic`, as part of the [recent blog post](https://blog.rust-lang.org/inside-rust/2022/08/16/diagnostic-effort.html)
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Migrate rustc_mir_dataflow to diagnostic structs
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Diagnostics migr const eval
This PR should eventually contain all diagnostic migrations for the `rustc_const_eval` crate.
r? `@davidtwco`
`@rustbot` label +A-translation
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Migrate `rustc_ty_utils` to `SessionDiagnostic`
I have migrated the `rustc_ty_utils` crate to use `SessionDiagnostic`, motivated by the [recent blog post about the diagnostic translation effort](https://blog.rust-lang.org/inside-rust/2022/08/16/diagnostic-effort.html).
This is my first PR to the Rust repository, so if I have missed anything, or anything needs to be changed, please let me know! 😄
`@rustbot` label +A-translation
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JeanCASPAR:migrate-ast_lowering-to-session-diagnostic, r=davidtwco
Migrate ast lowering to session diagnostic
I migrated the whole rustc_ast_lowering crate to session diagnostic *except* the for the use of `span_fatal` at /compiler/rustc_ast_lowering/src/expr.rs#L1268 because `#[fatal(...)]` is not yet supported (see https://github.com/rust-lang/rust/pull/100694).
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interpret: remove support for uninitialized scalars
With Miri no longer supporting `-Zmiri-allow-uninit-numbers`, we no longer need to support storing uninit data in a `Scalar`. We anyway already only use this representation for types with *initialized* `Scalar` layout (and we have to, due to partial initialization), so let's get rid of the `ScalarMaybeUninit` type entirely.
I tried to stage this into meaningful commits, but the one that changes `read_immediate` to always trigger UB on uninit is the largest chunk of the PR and I don't see how it could be subdivided.
Fixes https://github.com/rust-lang/miri/issues/2187
r? `@oli-obk`
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Don't catch overflow when running with cargo doc
Fixes #100991
r? `@compiler-errors`
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initialized Scalar
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session: stabilize split debuginfo on linux
Stabilize the `-Csplit-debuginfo` flag...
- ...on Linux for all values of the flag. Split DWARF has been implemented for a few months, hasn't had any bug reports and has had some promising benchmarking for incremental debug build performance.
- ..on other platforms for the default value. It doesn't make any sense that `-Csplit-debuginfo=packed` is unstable on Windows MSVC when that's the default behaviour, but keep the other values unstable.
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Shrink `thir::Expr`
r? `@cjgillot`
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Avoid reporting overflow in `is_impossible_method`
Fixes #100620
We're evaluating a new predicate in a different param-env than it was checked during typeck, so be more careful about handling overflow errors. Instead of using `FulfillmentCtxt`, using `InferCtxt::evaluate_obligation` by itself will give us back the overflow error, so we can throw it away properly.
This may give us more false-positives, but it doesn't regress the `<HashMap as Iterator>::rev` example that originally motivated adding `is_impossible_method` in the first place.
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Handle `Err` in `ast::LitKind::to_token_lit`.
Fixes #100948.
r? ``@petrochenkov``
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Remove unstable Result::into_ok_or_err
Pending FCP: https://github.com/rust-lang/rust/issues/82223#issuecomment-1214920203
```@rustbot``` label +waiting-on-fcp
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Elaborate all box dereferences in `ElaborateBoxDerefs`
so that it is the only pass responsible for elaboration, instead of
splitting this responsibility between the `StateTransform` and
`ElaborateBoxDerefs`.
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Custom allocator support in `rustc_serialize`
Adding support for `rustc_serialize` encode/decode for `Box` and `Vec` that use a custom allocator.
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distinguish the method and associated function diagnostic information
Methods are defined within the context of a struct and their first parameter is always self
Associated functions don’t take self as a parameter
```
modified: compiler/rustc_typeck/src/check/method/suggest.rs
modified: src/test/ui/auto-ref-slice-plus-ref.stderr
modified: src/test/ui/block-result/issue-3563.stderr
modified: src/test/ui/issues/issue-28344.stderr
modified: src/test/ui/suggestions/dont-suggest-pin-array-dot-set.stderr
modified: src/test/ui/suggestions/suggest-methods.stderr
modified: src/test/ui/traits/trait-upcasting/subtrait-method.stderr
```
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add `depth_limit` in `QueryVTable` to avoid entering a new tcx in `layout_of`
Fixes #49735
Updates #48685
The `layout_of` query needs to check whether it overflows the depth limit, and the current implementation needs to create a new `ImplicitCtxt` inside `layout_of`. However, `start_query` will already create a new `ImplicitCtxt`, so we can check the depth limit in `start_query`.
We can tell whether we need to check the depth limit simply by whether the return value of `to_debug_str` of the query is `layout_of`. But I think adding the `depth_limit` field in `QueryVTable` may be more elegant and more scalable.
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use a custom allocator
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so that it is the only pass responsible for elaboration, instead of
splitting this responsibility between the `StateTransform` and
`ElaborateBoxDerefs`.
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Check projection types before inlining MIR
Fixes https://github.com/rust-lang/rust/issues/100550
I'm very unhappy with this solution, having to duplicate MIR validation code, but at least it removes the ICE.
r? `@compiler-errors`
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try and simplify some things in the query system
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A resume place is evaluated and assigned to only after a yield
terminator resumes. Ensure that locals used when evaluating the
resume place are live across the yield.
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