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When given multiple lifetimes prior to type parameters in generic
parameters, do not ICE and print the correct suggestion.
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Multiple people have asked for them, in
https://github.com/rust-lang/rust/issues/49137.
Given that the unsigned ones already exist,
they are very easy to add and not an additional maintenance burden.
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Add lint for copyright headers to 'tidy' tool
r? @Mark-Simulacrum
CC @centril
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Implement basic input validation for built-in attributes
Correct top-level shape (`#[attr]` vs `#[attr(...)]` vs `#[attr = ...]`) is enforced for built-in attributes, built-in attributes must also fit into the "meta-item" syntax (aka the "classic attribute syntax").
For some subset of attributes (found by crater run), errors are lowered to deprecation warnings.
NOTE: This PR previously included https://github.com/rust-lang/rust/pull/57367 as well.
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In particular, I can use the following in my `config.toml`:
```
[build]
host = ["i686-unknown-linux-gnu", "x86_64-unknown-linux-gnu"]
target = ["i686-unknown-linux-gnu", "x86_64-unknown-linux-gnu"]
```
Before this change, my attempt to run the test suite would fail
because the error output differs depending on what your host and
targets are.
----
To be concrete, here are the actual messages one can observe:
```
% ./build/x86_64-unknown-linux-gnu/stage1/bin/rustc ../src/test/ui/huge-enum.rs -Aunused --target=x86_64-unknown-linux-gnu
error: the type `std::option::Option<[u32; 35184372088831]>` is too big for the current architecture
error: aborting due to previous error
% ./build/x86_64-unknown-linux-gnu/stage1/bin/rustc ../src/test/ui/huge-enum.rs -Aunused --target=i686-unknown-linux-gnu
error: the type `std::option::Option<[u32; 536870911]>` is too big for the current architecture
error: aborting due to previous error
% ./build/i686-unknown-linux-gnu/stage1/bin/rustc ../src/test/ui/huge-enum.rs -Aunused --target=i686-unknown-linux-gnu
error: the type `std::option::Option<[u32; 536870911]>` is too big for the current architecture
error: aborting due to previous error
% ./build/i686-unknown-linux-gnu/stage1/bin/rustc ../src/test/ui/huge-enum.rs -Aunused --target=x86_64-unknown-linux-gnu
error: the type `[u32; 35184372088831]` is too big for the current architecture
error: aborting due to previous error
```
To address these variations, I changed the test to be more aggressive
in its normalization strategy. We cannot (and IMO should not)
guarantee that `Option` will appear in the error output here. So I
normalized both types `Option<[u32; N]>` and `[u32; N]` to just `TYPE`
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rustc: Remove platform intrinsics crate
This was originally attempted in #57048 but it was realized that we
could fully remove the crate via the `"unadjusted"` ABI on intrinsics.
This means that all intrinsics in stdsimd are implemented directly
against LLVM rather than using the abstraction layer provided here. That
ends up meaning that this crate is no longer used at all.
This crate developed long ago to implement the SIMD intrinsics, but we
didn't end up using it in the long run. In that case let's remove it!
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Add 'rustc-env:RUST_BACKTRACE=0' to const-pat-ice test
This ensures that the test passes, regardless of what the user has set
RUST_BACKTRACE to.
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Implement `check_attribute` to forbid `#[allow_internal_unsafe]`
Fixes #56768.
r? @oli-obk
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forbid manually impl'ing one of an object type's marker traits
This shouldn't break compatibility for crates that do not use
`feature(optin_builtin_traits)`, because as the test shows, it is
only possible to impl a marker trait for a trait object in the crate the
marker trait is defined in, which must define
`feature(optin_builtin_traits)`.
Fixes #56934.
r? @nikomatsakis
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Recover from item trailing semicolon
CC https://github.com/rust-lang/rfcs/pull/2479
r? @petrochenkov
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Unaccept `extern_in_paths`
Based on completed fcp-close in https://github.com/rust-lang/rust/issues/55600, this removes `extern_in_path` (e.g. `extern::foo::bar`) from the language. The changes are primarily reversing https://github.com/rust-lang/rust/commit/32db83b16e06cb5cca72d0e6a648a8008eda0fac.
Closes https://github.com/rust-lang/rust/issues/55600
r? @petrochenkov
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Modify some parser diagnostics to continue evaluating beyond the parser
Continue evaluating further errors after parser errors on:
- trailing type argument attribute
- lifetime in incorrect location
- incorrect binary literal
- missing `for` in `impl Trait for Foo`
- type argument in `where` clause
- incorrect float literal
- incorrect `..` in pattern
- associated types
- incorrect discriminator value variant error
and others. All of these were found by making `continue-parse-after-error` `true` by default to identify errors that would need few changes. There are now only a handful of errors that have any change with `continue-parse-after-error` enabled.
These changes make it so `rust` _won't_ stop evaluation after finishing parsing, enabling type checking errors to be displayed on the existing code without having to fix the parse errors.
Each commit has an individual diagnostic change with their corresponding tests.
CC #48724.
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provide suggestion for invalid boolean cast
Also, don't suggest comparing to zero for non-numeric expressions.
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This was originally attempted in #57048 but it was realized that we
could fully remove the crate via the `"unadjusted"` ABI on intrinsics.
This means that all intrinsics in stdsimd are implemented directly
against LLVM rather than using the abstraction layer provided here. That
ends up meaning that this crate is no longer used at all.
This crate developed long ago to implement the SIMD intrinsics, but we
didn't end up using it in the long run. In that case let's remove it!
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Rollup of 6 pull requests
Successful merges:
- #57232 (Parallelize and optimize parts of HIR map creation)
- #57418 (MetadataOnlyCodegenBackend: run the collector only once)
- #57465 (Stabilize cfg_target_vendor)
- #57477 (clarify resolve typo suggestion)
- #57556 (privacy: Fix private-in-public check for existential types)
- #57584 (Remove the `connect_timeout_unroutable` test.)
Failed merges:
r? @ghost
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privacy: Fix private-in-public check for existential types
Fixes https://github.com/rust-lang/rust/issues/53546 (regression from https://github.com/rust-lang/rust/pull/56878)
r? @arielb1
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clarify resolve typo suggestion
Include the kind of the binding that we're suggesting, and use a
structured suggestion.
Fixes #53445.
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r=joshtriplett,Centril
Stabilize cfg_target_vendor
This stabilizes the use of `cfg(target_vendor = "...")` and removes the corresponding `cfg_target_vendor` feature. Other unstable cfgs remain behind their existing feature gates.
This functionality was added back in 2015 in #28612 to complete the coverage of target tuples (`<arch><sub>-<vendor>-<os>-<env>`). [RFC 131](https://github.com/rust-lang/rfcs/blob/master/text/0131-target-specification.md) governs the target specification, not including `target_vendor` seems to have just been an oversight. `target_os`, `target_family`, and `target_arch` are stable as of 1.0.0. `target_env` was also not mentioned in RFC 131, was added in #24777, never behind a feature_gate, and insta-stable at 1.1.0.
The functionality is tested in [test/run-pass/cfg/cfg-target-vendor.rs](https://github.com/rust-lang/rust/blob/master/src/test/run-pass/cfg/cfg-target-vendor.rs).
Closes #29718
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Stabilize core::convert::identity
r? @SimonSapin
fixes https://github.com/rust-lang/rust/issues/53500
This is waiting for FCP to complete but in the interim it would be good to review.
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Use structured suggestions for nonstandard style lints
This PR modifies the lints in the nonstandard_style group to use structured suggestions. Note that there's a bit of tricky span calculation going on for the `crate_name` attribute. It also simplifies the code a bit: I don't think the "fallback" suggestions for these lints can actually be triggered.
Fixes #48103.
Fixes #52414.
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This ensures that the test passes, regardless of what the user has set
RUST_BACKTRACE to.
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Rollup of 4 pull requests
Successful merges:
- #56874 (Simplify foreign type rendering.)
- #57113 (Move diagnostics out from QueryJob and optimize for the case with no diagnostics)
- #57366 (Point at match discriminant on type error in match arm pattern)
- #57538 (librustc_mir: Fix ICE with slice patterns)
Failed merges:
- #57381 (Tweak output of type mismatch between "then" and `else` `if` arms)
r? @ghost
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librustc_mir: Fix ICE with slice patterns
If a match arm does not include all fields in a structure and a later
pattern includes a field that is an array, we will attempt to use the
array type from the prior arm. When calculating the field type, treat
a array of an unknown size as a `TyErr`.
Fixes: #57472
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Point at match discriminant on type error in match arm pattern
```
error[E0308]: mismatched types
--> src/main.rs:5:9
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4 | let temp: usize = match a + b {
| ----- this expression has type `usize`
5 | Ok(num) => num,
| ^^^^^^^ expected usize, found enum `std::result::Result`
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= note: expected type `usize`
found type `std::result::Result<_, _>`
```
Fix #57279.
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