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Clippy subtree update
r? `@Manishearth`
Cargo.lock update due to clippy version bump
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clippy-subtree-update
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Rollup of 19 pull requests
Successful merges:
- rust-lang/rust#137831 (Tweak auto trait errors)
- rust-lang/rust#138689 (add nvptx_target_feature)
- rust-lang/rust#140267 (implement continue_ok and break_ok for ControlFlow)
- rust-lang/rust#143028 (emit `StorageLive` and schedule `StorageDead` for `let`-`else`'s bindings after matching)
- rust-lang/rust#143764 (lower pattern bindings in the order they're written and base drop order on primary bindings' order)
- rust-lang/rust#143808 (Port `#[should_panic]` to the new attribute parsing infrastructure )
- rust-lang/rust#143906 (Miri: non-deterministic floating point operations in `foreign_items`)
- rust-lang/rust#143929 (Mark all deprecation lints in name resolution as deny-by-default and report-in-deps)
- rust-lang/rust#144133 (Stabilize const TypeId::of)
- rust-lang/rust#144369 (Upgrade semicolon_in_expressions_from_macros from warn to deny)
- rust-lang/rust#144439 (Introduce ModernIdent type to unify macro 2.0 hygiene handling)
- rust-lang/rust#144473 (Address libunwind.a inconsistency issues in the bootstrap program)
- rust-lang/rust#144601 (Allow `cargo fix` to partially apply `mismatched_lifetime_syntaxes`)
- rust-lang/rust#144650 (Additional tce tests)
- rust-lang/rust#144659 (bootstrap: refactor mingw dist and fix gnullvm)
- rust-lang/rust#144682 (Stabilize `strict_overflow_ops`)
- rust-lang/rust#145026 (Update books)
- rust-lang/rust#145033 (Reimplement `print_region` in `type_name.rs`.)
- rust-lang/rust#145040 (rustc-dev-guide subtree update)
Failed merges:
- rust-lang/rust#143857 (Port #[macro_export] to the new attribute parsing infrastructure)
r? `@ghost`
`@rustbot` modify labels: rollup
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bump bootstrap compiler to 1.90 beta
There were significantly less `cfg(bootstrap)` and `cfg(not(bootstrap))` this release. Presumably due to the fact that we change the bootstrap stage orderings to reduce the need for them and it was successful :pray:
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rustc-dev-guide subtree update
Subtree update of `rustc-dev-guide` to https://github.com/rust-lang/rustc-dev-guide/commit/1beca6333e2de8df2d002613c7c8fce55a1a1257.
Created using https://github.com/rust-lang/josh-sync.
r? `@ghost`
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Update books
## rust-lang/book
5 commits in b2d1a0821e12a676b496d61891b8e3d374a8e832..3e9dc46aa563ca0c53ec826c41b05f10c5915925
2025-08-02 01:33:29 UTC to 2025-07-14 21:23:38 UTC
- Appendix B and Appendix D from tech review (rust-lang/book#4466)
- Chapter 21 from tech review (rust-lang/book#4464)
- Chapter 20 from tech review (rust-lang/book#4460)
- Chapter 19 from tech review (rust-lang/book#4446)
- Chapter 18 from tech review (rust-lang/book#4445)
## rust-lang/reference
12 commits in 1f45bd41fa6c17b7c048ed6bfe5f168c4311206a..1be151c051a082b542548c62cafbcb055fa8944f
2025-08-05 19:51:40 UTC to 2025-07-14 19:49:01 UTC
- Fix build output directory in README (rust-lang/reference#1950)
- Update `link_name` to use the attribute template (rust-lang/reference#1896)
- Update `no_link` to use the attribute template (rust-lang/reference#1898)
- Update `proc_macro_derive` to use the attribute template (rust-lang/reference#1888)
- Update `automatically_derived` to use the attribute template (rust-lang/reference#1884)
- Update `derive` to use the attribute template (rust-lang/reference#1883)
- Fix and clarify CR LF normalization and CR in string literals (rust-lang/reference#1944)
- glossary.md: tweak description of "dispatch" (rust-lang/reference#1938)
- add missing id, r[asm.operand-type.supported-operands.const] (rust-lang/reference#1939)
- &str and &[u8] have the same layout (rust-lang/reference#1848)
- Rename and rewrite the "question mark operator" (rust-lang/reference#1931)
- Change "allocated object" to "allocation". (rust-lang/reference#1930)
## rust-lang/rust-by-example
3 commits in e386be5f44af711854207c11fdd61bb576270b04..bd1279cdc9865bfff605e741fb76a0b2f07314a7
2025-08-04 13:41:04 UTC to 2025-08-02 15:41:59 UTC
- Improve the activity instructions in `print_display` (rust-lang/rust-by-example#1948)
- Minor fixes (whitespace, typo, i32->u32) (rust-lang/rust-by-example#1947)
- Document drawbacks of alternatives to match binding (rust-lang/rust-by-example#1946)
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Stabilize `strict_overflow_ops`
Closes rust-lang/rust#118260
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bootstrap: refactor mingw dist and fix gnullvm
Fixes https://github.com/rust-lang/rust/issues/144533
The first two commits are NFC and only clean up the code, paving the way for the third commit. That said, I think they are worthwhile even without that fix - reusing the same function for two different outcomes was confusing.
The third commit is the fix for https://github.com/rust-lang/rust/issues/144533, but due to the cross-compilation dance it requires a workaround to find the DLL since that logic really was meant only for Windows builders. That workaround is short-lived and will be removed as soon as gnullvm bootstraps itself.
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Address libunwind.a inconsistency issues in the bootstrap program
We noticed when building rustc multiple time in a roll, some files will not be consistent across the build despite the fact that they are built from same source under the same environment. This patch addresses the inconsistency issue we found on libunwind.a, by sorting the order of the files passed to the linker.
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r=RalfJung
Miri: non-deterministic floating point operations in `foreign_items`
Part of [rust-lang/miri/#3555](https://github.com/rust-lang/miri/issues/3555#issue-2278914000), this pr does the `foreign_items` work.
Some things have changed since rust-lang/rust#138062 and rust-lang/rust#142514. I moved the "helpers" used for creating fixed outputs and clamping operations to their defined ranges to `math.rs`. These are now also extended to handle the floating-point operations in `foreign_items`. Tests in `miri/tests/float.rs` were changed/added.
Failing tests in `std` were extracted, run under miri with `-Zmiri-many-seeds=0..1000` and changed accordingly. Double checked with `-Zmiri-many-seeds`.
I noticed that the C standard doesn't specify the output ranges for all of its mathematical operations; it just specifies them as:
```
Returns
The sinh functions return sinh x.
```
So I used [Wolfram|Alpha](https://www.wolframalpha.com/).
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add nvptx_target_feature
Tracking issue: #141468 (nvptx), which is part of #44839 (catch-all arches)
The feature gate is `#![feature(nvptx_target_feature)]`
This exposes the target features `sm_20` through `sm_120a` [as defined](https://github.com/llvm/llvm-project/blob/llvmorg-20.1.1/llvm/lib/Target/NVPTX/NVPTX.td#L59-L85) by LLVM.
Cc: ``````@gonzalobg``````
``````@rustbot`````` label +O-NVPTX +A-target-feature
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Revert "Preserve the .debug_gdb_scripts section"
https://github.com/rust-lang/rust/pull/143679 introduces a significant build time perf regression for ripgrep. Let's revert it such that we can investigate it without pressure.
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Pull recent changes from https://github.com/rust-lang/rust via Josh.
Upstream ref: 6bcdcc73bd11568fd85f5a38b58e1eda054ad1cd
Filtered ref: 6cc4ce79e1f8dc0ec5a2e18049b9c1a51dee3221
This merge was created using https://github.com/rust-lang/josh-sync.
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This updates the rust-version file to 6bcdcc73bd11568fd85f5a38b58e1eda054ad1cd.
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Print thread ID in panic message
`panic!` does not print any identifying information for threads that are
unnamed. However, in many cases, the thread ID can be determined.
This changes the panic message from something like this:
thread '<unnamed>' panicked at src/main.rs:3:5:
explicit panic
To something like this:
thread '<unnamed>' (12345) panicked at src/main.rs:3:5:
explicit panic
Stack overflow messages are updated as well.
This change applies to both named and unnamed threads. The ID printed is
the OS integer thread ID rather than the Rust thread ID, which should
also be what debuggers print.
try-job: aarch64-apple
try-job: aarch64-gnu
try-job: dist-apple-various
try-job: dist-various-*
try-job: dist-x86_64-freebsd
try-job: dist-x86_64-illumos
try-job: dist-x86_64-netbsd
try-job: dist-x86_64-solaris
try-job: test-various
try-job: x86_64-gnu
try-job: x86_64-mingw-1
try-job: x86_64-msvc-1
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`panic!` does not print any identifying information for threads that are
unnamed. However, in many cases, the thread ID can be determined.
This changes the panic message from something like this:
thread '<unnamed>' panicked at src/main.rs:3:5:
explicit panic
To something like this:
thread '<unnamed>' (0xff9bf) panicked at src/main.rs:3:5:
explicit panic
Stack overflow messages are updated as well.
This change applies to both named and unnamed threads. The ID printed is
the OS integer thread ID rather than the Rust thread ID, which should
also be what debuggers print.
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So we don't need to add normalization to every test that includes a
panic message, add a global normalization to compiletest.
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r=fmease
Fix rustdoc scrape examples crash
Fixes rust-lang/rust#144752.
The regression was introduced in https://github.com/rust-lang/rust/pull/144600. Although I don't understand why it is an issue currently, this allows to bypass the failure for now until we can figure out what's wrong as it's currently blocking new `bevy`'s release.
cc `@alice-i-cecile`
r? `@fmease`
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Remove unneeded `stage` parameter when setting up stdlib Cargo
The standard library can't be built using a compiler that has a lower stage than 1 anymore, so the condition was useless (you can test that with e.g. `x doc std --stage 0`, which is broken - I aim to forbid doing that soon).
Found this while doing an unrelated cleanup.
r? `@jieyouxu`
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r=GuillaumeGomez
rustdoc: fix caching of intra-doc links on reexports
previously two reexports of the same item would share a set of intra-doc links, which would cause problems if they had two different links with the same text. this was fixed by using the reexport defid as the key, if it is available.
fixes https://github.com/rust-lang/rust/issues/144965
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There's already a link in the other direction, so this seems fairly logical.
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This reverts commit b4d923cea0509933b1fb859930cb20784251f9be.
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Rollup of 12 pull requests
Successful merges:
- rust-lang/rust#144552 (Rehome 33 `tests/ui/issues/` tests to other subdirectories under `tests/ui/`)
- rust-lang/rust#144676 (Add documentation for unstable_feature_bound)
- rust-lang/rust#144836 (Change visibility of Args new function)
- rust-lang/rust#144910 (Add regression tests for seemingly fixed issues)
- rust-lang/rust#144913 ([rustdoc] Fix wrong `i` tooltip icon)
- rust-lang/rust#144924 (compiletest: add hint for when a ui test produces no errors)
- rust-lang/rust#144926 (Correct the use of `must_use` on btree::IterMut)
- rust-lang/rust#144928 (Drop `rust-version` from `rustc_thread_pool`)
- rust-lang/rust#144945 (Autolabel PRs that change explicit tail call tests as `F-explicit_tail_calls`)
- rust-lang/rust#144954 (run-make: Allow blessing snapshot files that don't exist yet)
- rust-lang/rust#144971 (num: Rename `isolate_most_least_significant_one` functions)
- rust-lang/rust#144978 (Fix some doc links for intrinsics)
r? `@ghost`
`@rustbot` modify labels: rollup
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run-make: Allow blessing snapshot files that don't exist yet
This makes it possible to bless the snapshot files used by `diff()` in newly-created run-make tests, without having to create the files manually beforehand.
r? jieyouxu
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r=clubby789
compiletest: add hint for when a ui test produces no errors
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[rustdoc] Fix wrong `i` tooltip icon
Current wrong display:
<img width="334" height="37" alt="Screenshot From 2025-08-04 17-42-38" src="https://github.com/user-attachments/assets/57046475-6162-487f-998f-ebb2434c111d" />
With the fix:
<img width="334" height="37" alt="image" src="https://github.com/user-attachments/assets/e761a103-dc39-4e30-8c8e-cfc7fab52fde" />
r? ``@fmease``
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Add documentation for unstable_feature_bound
There is more detail and explanation in https://hackmd.io/``````@tiif/Byd3mq7Ige``````
Original PR that implemented this: rust-lang/rust#140399
r? ``````@BoxyUwU`````` to nominate for types team discussion
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r=bjorn3
Preserve the .debug_gdb_scripts section
Make sure that compiler and linker don't optimize the section's contents
away by adding the global holding the data to `llvm.used`. This
eliminates the need for a volatile load in the main shim; since the LLVM
codegen backend is the only implementer of the corresponding trait
function, remove it entirely.
Pretty printers in dylib dependencies are now emitted by the main crate
instead of the dylib; apart from matching how rlibs are handled, this
approach has the advantage that `omit_gdb_pretty_printer_section` keeps
working with dylib dependencies.
r? `@bjorn3`
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Instead of collecting pretty printers transitively when building
executables/staticlibs/cdylibs, let the debugger find each crate's
pretty printers via its .debug_gdb_scripts section. This covers the case
where libraries defining custom pretty printers are loaded dynamically.
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Update to LLVM 21
Timeline: LLVM 21.1.0 is scheduled to release on Aug 26th. Rust 1.90 branches on Aug 1st and releases September 18.
Depends on:
* [x] https://github.com/llvm/llvm-project/issues/147781
* [x] https://github.com/llvm/llvm-project/issues/147935
* [x] https://github.com/llvm/llvm-project/issues/139443
* [x] https://github.com/llvm/llvm-project/pull/148207
* [x] https://github.com/llvm/llvm-project/pull/148607
* [x] https://github.com/llvm/llvm-project/pull/149046
* [x] https://github.com/llvm/llvm-project/issues/149097
* [x] https://github.com/rust-lang/rust/pull/144116
r? `@ghost`
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This makes it possible to bless the snapshot files used by `diff()` in
newly-created run-make tests, without having to create the files manually
beforehand.
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Update installation.md
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The project build for compiler-rt is deprecated.
The runtimes build will use the just-built clang. As such, we
also need to pass --gcc-toolchain to the runtimes build, so that
it can find the GCC installation.
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Consolidate staging for `rustc_private` tools
This PR continues bootstrap refactoring, this time by consolidating staging for `Mode::ToolRustc` tools. This refactoring was in the critical path of refactoring `test`/`dist`/`clippy`/`doc` steps, and getting rid of the rmeta/rlib sysroot copy, because tools are pervasive and they are being used for a lot of things in bootstrap.
The main idea is to explicitly model the fact that a stage N `Mode::ToolRustc` tool always works with two different compilers:
- Stage N-1 rustc (`build_compiler`) builds stage N rustc (`target_compiler`)
- Rlib artifacts from stage N rustc are copied to the sysroot of stage N-1 rustc
- Stage N-1 rustc builds the (stage N) tool itself, the tool links to the rlib artifacts of the stage N rustc
Before, the code often used `compiler`, which meant sometimes the build compiler, sometimes the target compiler, and sometimes neither (looking at you, `download-rustc`). This is especially annoying when you get to a situation where you have an install step that invokes a dist step that invokes a tool build step, where *some* compiler is being propagated through, without it being clear what does that compiler represent. This refactoring hopefully makes that clearer and more explicit. It also gets rid of a few `builder.ensure(Rustc(...))` calls within bootstrap, which is always nice.
`Rustdoc` needs to be handled a bit specially, because it acts as a compiler itself, I documented that in the changes.
It wasn't practical to do these refactorings in multiple PRs, so I did it all in one PR. The meat of the change is 9ee6d1c1ed112c3dcfb5684b33772b136df0dca3.
I tested manually that `x build rustdoc` and `x build miri` still works even with `download-rustc`, although I cannot promise any extra support for `download-rustc`, IMO we will just have to reimplement it from scratch in a different way.
As usually, I did some drive-by refactorings to bootstrap, trying to document and clarify things, add more step metadata and tests.
Since these changes broke Cargo, which was incorrectly using `Mode::ToolRustc`, I also changed cargo to `ToolTarget` in this PR.
Best reviewed commit-by-commit (note that I renamed `link_compiler` to `target_compiler`, in accordance to the rest of bootstrap, in the last commit).
r? `@jieyouxu`
try-job: x86_64-gnu-aux
try-job: x86_64-msvc-ext1
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rustc-dev-guide subtree update
Subtree update of `rustc-dev-guide` to https://github.com/rust-lang/rustc-dev-guide/commit/1263fc23672325c1d2e3d6bba8a7dd89e986245c.
Created using https://github.com/rust-lang/josh-sync.
r? ``@ghost``
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`rust-analyzer` subtree update
Subtree update of `rust-analyzer` to https://github.com/rust-lang/rust-analyzer/commit/8d75311400a108d7ffe17dc9c38182c566952e6e.
Created using https://github.com/rust-lang/josh-sync.
r? `@ghost`
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Add a tidy check to prevent adding UI tests directly under `tests/ui/`
This PR implements https://github.com/rust-lang/compiler-team/issues/902.
Only the last commit (adding the new check) is functional; earlier commits are just small drive-by changes to make the other ui/ui-fulldeps checks more logically contained.
r? ```@Kobzol``` (or compiler)
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Implement debugging output of the bootstrap Step graph into a DOT file
There are already a bunch of ways how we can debug bootstrap, so why not add one more =D (ideally I'd like to consolidate these approaches somewhat, ```@Shourya742``` is looking into that, but I think that this specific debugging tool is orthogonal to the rest of them, and is quite useful).
This PR adds the option to render the bootstrap step graph into the DOT format, in order to understand what steps were executed, along with their fields (`Debug` output).
Here you can see an example of the generated DOT files for the `BOOTSTRAP_TRACING=1 ./x build compiler --stage 2 --dry-run` command on x64 Linux. One is with cached deps (what this PR does), the other one without.
[bootstrap-dot.zip](https://github.com/user-attachments/files/21548679/bootstrap-dot.zip)
Visual example:
<img width="1899" height="445" alt="image" src="https://github.com/user-attachments/assets/ae40e6d2-0ea8-48bb-b77e-6b21700b95ee" />
r? ```@jieyouxu```
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r=GuillaumeGomez
rustdoc template font links only emit `crossorigin` when needed
The `crossorigin` attribute may cause issues when the href is not actually cross-origin. Specifically, the tag causes the browser to send a preflight OPTIONS request to the server even if it is same-origin. Some temperamental servers may reject all CORS preflight requests even if they're actually same-origin, which causes a CORS error and prevents the fonts from loading, even later on.
This commit fixes that problem by not emitting `crossorigin` if the url appears to be relative to the same origin.
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