Rollup of 7 pull requests #152412
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Rollup of 7 pull requests #152412
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Detect Python-style f-string debug syntax in format strings and emit a
clear diagnostic explaining that it is not supported in Rust. When the
intended operation can be inferred, suggest the corresponding Rust
alternative e.g from `println!("{=}", x)` to `dbg!({x})`.
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
This also updates the macOS runners to run on macOS 15 (the macOS 14 runners only have up to Xcode 16.2 available).
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
… report_sub_sup_conflict In `report_sub_sup_conflict`, when calling `values_str` for `sub_trace.values`, the code was incorrectly passing `sup_trace.cause` instead of `sub_trace.cause`. This is a copy-paste error from the preceding line which correctly uses `sup_trace.cause` for `sup_trace.values`. The `cause` parameter matters for `ValuePairs::PolySigs` comparisons, where `values_str` inspects `cause.code()` to extract `impl_item_def_id` and `trait_item_def_id` for richer function signature diagnostics. Using the wrong trace's cause could produce incorrect function def IDs, leading to misleading diagnostic output when the sub and sup traces originate from different obligations. Even for non-PolySigs variants where `cause` is currently unused by `values_str`, passing the semantically correct cause is the right thing to do for correctness and maintainability.
This target is intended to be used for kernel development. Becasue on s390x float and vector registers overlap we have to disable the vector extension. The default s390x-unknown-gnu-linux target will not allow use of softfloat. Co-authored-by: Jubilee <workingjubilee@gmail.com>
tests will check: - correct emit of assembly for softfloat target - incompatible set features will emit warnings/errors - incompatible target tripples in crates will not link
…estebank rustc_parse: improve the error diagnostic for "missing let"
…=petrochenkov Fix error spans for `asm!()` args that are macros Fixes rust-lang#131292 which is exactly the same issue as rust-lang#129503 but for [`err.secondary_label`](https://github.com/rust-lang/rust/blob/9f4b56a5aed81e8c36cc26b3c1b4666ead6b71fc/compiler/rustc_builtin_macros/src/asm.rs#L399-L401) instead of [`err.span`](https://github.com/rust-lang/rust/blob/9f4b56a5aed81e8c36cc26b3c1b4666ead6b71fc/compiler/rustc_builtin_macros/src/asm.rs#L385-L391). The latter issue was fixed in rust-lang#130917 so see that PR for context. In addition to the above, the current PR also proactively fixes potential future issues of the same kind which would have occurred over [here ](https://github.com/rust-lang/rust/blob/9f4b56a5aed81e8c36cc26b3c1b4666ead6b71fc/compiler/rustc_builtin_macros/src/asm.rs#L478-L482)and [here](https://github.com/rust-lang/rust/blob/9f4b56a5aed81e8c36cc26b3c1b4666ead6b71fc/compiler/rustc_builtin_macros/src/asm.rs#L493-L497).
fix: sup_trace to sub_trace This looks like a copy-past here from the line above.
rustc_parse_format: improve diagnostics for unsupported debug = syntax
Detect Python-style f-string debug syntax in format strings and emit a
clear diagnostic explaining that it is not supported in Rust. When the
intended operation can be inferred, suggest the corresponding Rust
alternative (e.g. `dbg!` for `{x=}`).
…ingjubilee Add `s390x-unknown-none-softfloat` with `RustcAbi::Softfloat` followup on rust-lang#150766 add an `s390x-unknown-none-softfloat` target to use for kernel compilation, as the Linux kernel does not wish to pay the overhead of saving float registers by default on kernel switch. this target's `extern "C"` ABI is unspecified, so it is unstable and subject to change between versions, just like the Linux intrakernel ABI and `extern "Rust"` ABIs are unstable. enforce target feature incompatibility by adding `RustcAbi::Softfloat`. this is itself just a rename of `RustcAbi::X86Softfloat`, accepting both "x86-softfloat" and "softfloat" as valid strings in the target.json format. the target-features of `"soft-float"` and `"vector"` are incompatible for s390x, so issue a compatibility warning if they are combined.
Update to Xcode 26.2
Update our CI to run with Xcode 26.
This means that:
- LLVM will be built with a newer Clang version (before Apple Clang 15, now Apple Clang 17).
- Our binaries (e.g. `rustc` and `libstd*.dylib`) will have their SDK version raised (before macOS 14.5, now 26.2).
- Our binaries will be built with a newer linker (before 1053.12, now 1230.1).
The last two points can be observed with:
```sh
$ vtool -show-build ./build/host/stage1/bin/rustc
Load command 10
cmd LC_BUILD_VERSION
cmdsize 32
platform MACOS
minos 11.0
sdk 26.2
ntools 1
tool LD
version 1230.1
$ vtool -show-build ./build/host/stage1/lib/rustlib/aarch64-apple-darwin/lib/libstd*.dylib
Load command 9
cmd LC_BUILD_VERSION
cmdsize 32
platform MACOS
minos 11.0
sdk 26.2
ntools 1
tool LD
version 1230.1
```
This shouldn't have much of an effect, but things like `dyld` is known to inspect the SDK version, so it _might_ expose some latent bugs (I really don't expect it to though).
This also updates the macOS runners to run on macOS 15 (the macOS 14 runners only have up to Xcode 16.2 available). That is desirable anyhow, as [the macOS 14 runners will be deprecated in July](actions/runner-images#13518). This is probably also required for rust-lang#147192.
r? shepmaster
…, r=wesleywiser
Remove the compiler adhoc group
Since triagebot now allows configuring rotation mode through a specific team.
Original review rotation:
```toml
compiler = [
"@BoxyUwU",
"@chenyukang",
"@davidtwco",
"@eholk",
"@fee1-dead",
"@fmease",
"@jackh726",
"@jieyouxu",
"@jdonszelmann",
"@JonathanBrouwer",
"@madsmtm",
"@mati865",
"@Nadrieril",
"@nnethercote",
"@oli-obk",
"@petrochenkov",
"@SparrowLii",
"@TaKO8Ki",
"@tiif",
"@WaffleLapkin",
"@wesleywiser",
]
```
I went through all the remaining members of t-compiler now and set their `compiler` team rotation to be off, to match the original state. You can check it with `team-stats compiler`.
r? @davidtwco
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@bors r+ rollup=never p=5 |
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📌 Perf builds for each rolled up PR:
previous master: 381e9ef09e In the case of a perf regression, run the following command for each PR you suspect might be the cause: |
Contributor
What is this?This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.Comparing 381e9ef (parent) -> f21b4c0 (this PR) Test differencesShow 26 test diffsStage 0
Stage 1
Stage 2
Additionally, 2 doctest diffs were found. These are ignored, as they are noisy. Job group index
Test dashboardRun cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard f21b4c0888ca6a388fcf9365fc0044fa0642ab98 --output-dir test-dashboardAnd then open Job duration changes
How to interpret the job duration changes?Job durations can vary a lot, based on the actual runner instance |
This was referenced Feb 10, 2026
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Finished benchmarking commit (f21b4c0): comparison URL. Overall result: ❌ regressions - no action needed@rustbot label: -perf-regression Instruction countOur most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.
Max RSS (memory usage)This benchmark run did not return any relevant results for this metric. CyclesResults (secondary 3.8%)A less reliable metric. May be of interest, but not used to determine the overall result above.
Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 509.869s -> 477.06s (-6.43%) |
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Successful merges:
asm!()args that are macros #152157 (Fix error spans forasm!()args that are macros)s390x-unknown-none-softfloatwithRustcAbi::Softfloat#151154 (Adds390x-unknown-none-softfloatwithRustcAbi::Softfloat)r? @ghost
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