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Example
---
**Before this PR**:
```rust
struct Variant{
field: u32
}
```
**After this PR**:
```rust
struct Variant {
field: u32
}
```
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GVN: Allow reusing aggregates if LHS is not a simple local.
This resolves a FIXME in the code. I don't see a reason not to allow this.
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The ASCII subset of Unicode is fixed and will never change, so we don't
need to generate tables for it with every new Unicode version. This
saves a few bytes of static data and speeds up `char::is_control` and
`char::is_grapheme_extended` on ASCII inputs.
Since the table lookup functions exported from the `unicode` module will
give nonsensical errors on ASCII input (and in fact will panic in debug
mode), I had to add some private wrapper methods to `char` which check
for ASCII-ness first.
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definition
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LorrensP-2158466:miri-float-nondet-foreign-items-take2, r=RalfJung
Miri: non-deterministic floating point operations in foreign_items
Take 2 of rust-lang/rust#143906. The last 2 commits are what changed compared to the original pr.
Verified the tests using (fish shell):
```fish
env MIRIFLAGS="-Zmiri-max-extra-rounding-error -Zmiri-many-seeds" ./x miri --no-fail-fast std core coretests -- f32 f64
```
r? `@RalfJung`
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Closes rust-lang/rust-clippy#15575
changelog: [`read_zero_byte_vec`] fix wrong suggestions inside `let`
stmt
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Rollup of 2 pull requests
Successful merges:
- rust-lang/rust#146254 (Use `Itertools::all_equal_value()` where applicable)
- rust-lang/rust#146290 (Revert "Add LSX accelerated implementation for source file analysis")
r? `@ghost`
`@rustbot` modify labels: rollup
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Revert "Add LSX accelerated implementation for source file analysis"
This reverts commit 5b43244ac59119870c9e0f6b642340ab88355b23 to fix native build failures on LoongArch.
Link: https://github.com/rust-lang/rust/pull/145963#issuecomment-3263195096
Link: https://github.com/rust-lang/rust/pull/145963#issuecomment-3263420700
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Use `Itertools::all_equal_value()` where applicable
Just a small cleanup.
We already have `itertools` as a dep in these crates, so might as well use another of its features.
Makes the code simpler IMHO :)
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lint ImproperCTypes: refactor linting architecture (part 1)
This is the first PR in an effort to split rust-lang/rust#134697 into individually-mergeable parts.
This one focuses on properly packaging the lint and its tests, as well as properly separate the "linting" and "type-checking" code.
There is exactly one user-visible change: the safety of `Option<Box<FFISafePointee>>` is now the same in `extern` blocks and function definitions: it is safe.
r? `@tgross35` because you are already looking at the original
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Upstream Solaris flock emulation to libstd from cargo.
This is borrowed from
https://github.com/rust-lang/cargo/blob/3b379fcc541b39321a7758552d37e5e0cc4277b9/src/cargo/util/flock.rs#L502-L536
which was implemented by an Oracle employee.
The code has been in cargo since 2022-12.
Python's `fcntl.flock` emulates like this as well:
https://github.com/python/cpython/blob/c919d02edecfe9d75fe374756fb8aa1db8d95f55/Modules/fcntlmodule.c#L337-L400
We did the same thing in
https://github.com/rust-lang/rust/blob/0d0f4eac8b98133e5da6d3604d86a8f3b5a67844/compiler/rustc_data_structures/src/flock/unix.rs#L13-L39
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This reverts commit 5b43244ac59119870c9e0f6b642340ab88355b23 to fix
native build failures on LoongArch.
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Rollup of 4 pull requests
Successful merges:
- rust-lang/rust#146200 (Simplify rustdoc-gui tester by calling directly browser-ui-test)
- rust-lang/rust#146236 (gpu offload: change suspicious map into filter)
- rust-lang/rust#146240 (DynamicConfig: use canonical clone impl)
- rust-lang/rust#146251 (rustc_middle: clippy fixes)
r? `@ghost`
`@rustbot` modify labels: rollup
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removes one level of nesting
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rustc_middle: clippy fixes
Fixes for:
```text
warning: bound is defined in more than one place
warning: empty line after doc comment
```
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DynamicConfig: use canonical clone impl
Fixes clippy warning:
```text
warning: non-canonical implementation of `clone` on a `Copy` type
--> compiler/rustc_query_impl/src/lib.rs:60:29
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60 | fn clone(&self) -> Self {
| _____________________________^
61 | | DynamicConfig { dynamic: self.dynamic }
62 | | }
| |_____^ help: change this to: `{ *self }`
```
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gpu offload: change suspicious map into filter
Fixes clippy warning:
```text
warning: this call to `map()` won't have an effect on the call to `count()`
--> compiler/rustc_codegen_llvm/src/builder/gpu_offload.rs:194:25
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194 | let num_ptr_types = types
| _________________________^
195 | | .iter()
196 | | .map(|&x| matches!(cx.type_kind(x), rustc_codegen_ssa::common::TypeKind::Pointer))
197 | | .count();
| |________________^
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= help: make sure you did not confuse `map` with `filter`, `for_each` or `inspect`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_map
= note: `-W clippy::suspicious-map` implied by `-W clippy::suspicious`
= help: to override `-W clippy::suspicious` add `#[allow(clippy::suspicious_map)]`
```
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r=lolbinarycat
Simplify rustdoc-gui tester by calling directly browser-ui-test
The output and handling of `browser-ui-test` is now mostly the same as we did manually, so no need to keep our wrapper anymore. Lot of code removed! \o/
r? `@lolbinarycat`
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Rollup of 5 pull requests
Successful merges:
- rust-lang/rust#139524 (Add socket extensions for cygwin)
- rust-lang/rust#145940 (single buffer for exponent fmt of integers)
- rust-lang/rust#146206 (identity uses are ok, even if there are no defining uses)
- rust-lang/rust#146272 (Update comment for `-Werror` on LLVM builds)
- rust-lang/rust#146280 (Make `LetChainsPolicy` public for rustfmt usage)
r? `@ghost`
`@rustbot` modify labels: rollup
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No changes should be visible by rustc users
This is just some architecture changes to the type checking to
facilitate FFI-safety decisions that depend on how the type is used
(the change here is not complete, there are still bits of "legacy" state
passing for this, but since this is a retconned commit, I can tell you
those bits will disappear before the end of the commit chain)
(there is at least one bit where the decision making code is weird, but
that this is because we do not want to change the lint's behaviour this
early in the chain)
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no visible changes to rust users, just making the inner architecture of
the ImproperCTypes lints more sensible, with a clean separation between
the struct (now singular) that interacts with the linting system
and the struct (now singular) that visits the types to check FFI-safety
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Mainly, we realise that the non-null assumption on a Box<_> argument
does not depend on what side of the FFI boundary the function is on.
And anyway, this is not the way to deal with this assumption being maybe violated.
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Make `LetChainsPolicy` public for rustfmt usage
Related to https://github.com/rust-lang/rust/pull/138511. To call `Parser::parse_expr_cond` from [rustfmt forks for custom macro formatting](https://github.com/tucant/rustfmt/blob/30c83df9e1db10007bdd16dafce8a86b404329b2/src/parse/macros/html.rs#L57) you need to pass this enum so it would be nice if it could be public.
Thank you.
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r=tgross35
Update comment for `-Werror` on LLVM builds
cc rust-lang/rust#109712
see https://github.com/rust-lang/rust/issues/109712#issuecomment-3257474643
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identity uses are ok, even if there are no defining uses
fix rust-lang/rust#146191
I've tried moving the "is this an identity use" check to `fn clone_and_resolve_opaque_types` and this would allow the following code to compile as it now ignores `Opaque<'!a> = Opaque<'!a>` while they previously resulted in errors https://github.com/rust-lang/rust/blob/71289c378d0a406a4f537fe4001282d19362931f/tests/ui/type-alias-impl-trait/hkl_forbidden.rs#L42-L46
The closure signature gets inferred to `for<'a> fn(&'a ()) -> Inner<'a>`. The closure then has a defining use `Inner<'a_latbound> = &'a_latebound ()` while the parent function has a non-defining `Inner<'!a> = Inner<'!a>`. By eagerly discarding identity uses we don't error on the non-defining use in the parent.
r? `@BoxyUwU`
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single buffer for exponent fmt of integers
No need for fragmented buffers when formatting.
```
orig.txt: fmt::write_i128_exp 143.39ns/iter +/- 0.32
orig.txt: fmt::write_i64_exp 68.72ns/iter +/- 0.03
new.txt: fmt::write_i128_exp 138.29ns/iter +/- 0.50
new.txt: fmt::write_i64_exp 58.93ns/iter +/- 4.62
```
This patch fully eliminates unsafe pointer use (after rust-lang/rust#135265 and rust-lang/rust#136594).
r? libs
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Add socket extensions for cygwin
r? `@joboet`
* Abstract name uds addr
* quickack
* passcred
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Split `run-make` into two {`run-make`,`run-make-cargo`} test suites
## Summary
Split `tests/run-make` into two test suites, to make it faster and more convenient for contributors to run run-make tests that do not need in-tree `cargo`.
| New test suites | Explanation |
| ---------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `tests/run-make` | The "fast path" test suite intended for run-make tests that do not need in-tree `cargo`. These tests may not use `cargo`. |
| `tests/run-make-cargo` | The "slow path" test suite that requires checking out `cargo` submodule and building in-tree `cargo`, and thus will have access to in-tree `cargo`. In practice, these constitute a very small portion of the original `run-make` tests. |
This PR carries out [MCP 847: Split run-make test suite into slower-building test suite with suitably-staged cargo and faster-building test suite without cargo](https://github.com/rust-lang/compiler-team/issues/847).
Fixes rust-lang/rust#135573 (for the tests that do not need in-tree `cargo`).
Fixes rust-lang/rust#134109.
## Remarks
- I considered if we want to split by in-tree tools previously. However, as discussed rust-lang/rust#134109, in practice `rustdoc` is not very slow to build, but `cargo` takes a good few minutes. So, the partition boundary was determined to be along in-tree `cargo` availability.
- The `run-make` tests previously that wanted to use `cargo` cannot just use the bootstrap `cargo`, otherwise they would run into situations where bootstrap `cargo` can significantly diverge from in-tree `cargo` (see https://github.com/rust-lang/rust/pull/130642).
---
try-job: aarch64-msvc-1
try-job: test-various
try-job: x86_64-gnu-debug
try-job: aarch64-gnu-debug
try-job: aarch64-apple
try-job: dist-various-1
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It is always false nowadays. ThinLTO summary writing is instead done by
llvm_optimize.
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It is only used within cg_llvm.
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