Rollup of 6 pull requests #124769
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Rollup of 6 pull requests #124769
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Allow allow enums like `Result<T, E>` to be used across FFI if the T/E can be niche optimized and the non-niche-optimized type is FFI safe.
Fields are disallowed so checking the top attribute is enough.
Couldn't find documentation supporting that single-variant
`#[repr(Rust)]` enums with RHS assigned work as expected with this
change.
```rust
enum Variants {
A = 17,
} // Would this be zero sized optimized guaranteed?
```
Summary: I landed a fix last year to enable `DW_TAG_variant_part` encoding in LLDBs (https://reviews.llvm.org/D149213). This PR is a corresponding fix in synthetic formatters to decode that information. This is in no way perfect implementation but at least it improves the status quo. But most types of enums will be visible and debuggable in some way. I've also updated most of the existing tests that touch enums and re-enabled test cases based on LLDB for enums. Test Plan: ran tests `./x test tests/debuginfo/`. Also tested manually in LLDB CLI and LLDB VSCode Other Thoughs A better approach would probably be adopting [formatters from codelldb](https://github.com/vadimcn/codelldb/blob/master/formatters/rust.py). There is some neat hack that hooks up summary provider via synthetic provider which can ultimately fix more display issues for Rust types and enums too. But getting it to work well might take more time that I have right now.
Triagebot: Rename `macos` ping group to `apple` Expand the scope of the macOS ping group to all Apple targets. Blocked on rust-lang/team#1436 (rename in `team` repo) Blocked on rust-lang/rustc-dev-guide#1964 (referenced documentation link) `@rustbot` label O-macos O-ios O-tvos O-watchos O-visionos
Add `rustfmt` cfg to well known cfgs list This PR adds the `rustfmt` cfg to the well known cfgs list. Related to rust-lang#124735
…, r=Mark-Simulacrum Implement lldb formattter for "clang encoded" enums (LLDB 18.1+) (v2) This PR is identical to rust-lang#124458, which was approved and merged but then removed from master by a force-push due to a [CI bug](https://rust-lang.zulipchat.com/#narrow/stream/242791-t-infra/topic/ci.20broken.3F). Original PR description: --- ## Summary: fixes rust-lang#79530 I landed a fix last year to enable `DW_TAG_variant_part` encoding in LLDBs (https://reviews.llvm.org/D149213). This PR is a corresponding fix in synthetic formatters to decode that information. This is in no way perfect implementation but at least it improves the status quo. But most types of enums will be visible and debuggable in some way. I've also updated most of the existing tests that touch enums and re-enabled test cases based on LLDB for enums. ## Test Plan: ran tests `./x test tests/debuginfo/`. Also tested manually in LLDB CLI and LLDB VSCode ## Other Thoughs: A better approach would probably be adopting [formatters from codelldb](https://github.com/vadimcn/codelldb/blob/master/formatters/rust.py). There is some neat hack that hooks up summary provider via synthetic provider which can ultimately fix more display issues for Rust types and enums too. But getting it to work well might take more time that I have right now.
Support Result<T, E> across FFI when niche optimization can be used (v2) This PR is identical to rust-lang#122253, which was approved and merged but then removed from master by a force-push due to a [CI bug](https://rust-lang.zulipchat.com/#narrow/stream/242791-t-infra/topic/ci.20broken.3F). r? ghost Original PR description: --- Allow allow enums like `Result<T, E>` to be used across FFI if the T/E can be niche optimized and the non-niche-optimized type is FFI safe. Implementation of rust-lang/rfcs#3391 Tracking issue: rust-lang#110503 Additional ABI and codegen tests were added in rust-lang#115372
…r, r=notriddle [rustdoc] Fix bad color for setting cog in ayu theme Before:  After:  r? `@notriddle`
…, r=jackh726 [resubmission] Meta: Enable the brand new triagebot transfer command rust-lang#124725, rust-lang#124725 (comment) r? ghost
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Rollup of 6 pull requests Successful merges: - rust-lang#124146 (Triagebot: Rename `macos` ping group to `apple`) - rust-lang#124742 (Add `rustfmt` cfg to well known cfgs list) - rust-lang#124745 (Implement lldb formattter for "clang encoded" enums (LLDB 18.1+) (v2)) - rust-lang#124747 (Support Result<T, E> across FFI when niche optimization can be used (v2)) - rust-lang#124765 ([rustdoc] Fix bad color for setting cog in ayu theme) - rust-lang#124768 ([resubmission] Meta: Enable the brand new triagebot transfer command) r? `@ghost` `@rustbot` modify labels: rollup
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Successful merges:
macosping group toapple#124146 (Triagebot: Renamemacosping group toapple)rustfmtcfg to well known cfgs list #124742 (Addrustfmtcfg to well known cfgs list)r? @ghost
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