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update `pulldown-cmark` to `0.9.3`
This PR updates `pulldown-cmark` to version `0.9.3`, which does two main things:
* Pulls in https://github.com/raphlinus/pulldown-cmark/pull/643 to fix https://github.com/rust-lang/rust/issues/111117
* Allows parsing strikethrough with single tildes, e.g. `~foo~` -> ~foo~. This matches the [GFM spec](https://github.github.com/gfm/#strikethrough-extension-).
Full changelog: https://github.com/raphlinus/pulldown-cmark/pull/646
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Promote loongarch64-unknown-linux-gnu to Tier 2 with host tools
This PR promotes `loongarch64-unknown-linux-gnu` to Tier 2 (with host tools).
MCP: https://github.com/rust-lang/compiler-team/issues/518
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Update books
## rust-embedded/book
1 commits in d9eb4c3f75435b008881062ffa77bf0d1527b37d..f2aed2fe8e9f55508c86ba3aa4b6789b18a08a22
2023-05-12 12:26:37 UTC to 2023-05-12 12:26:37 UTC
- Add link to Comprehensive Rust 🦀 (rust-embedded/book#354)
## rust-lang/nomicon
2 commits in b5f7500fc40775096c2bbd204eae096612cf9047..b5f018fb5930cb733b0a8aaf2eed975d4771e74d
2023-05-19 18:10:25 UTC to 2023-05-14 20:22:16 UTC
- Expand unbounded lifetime example code and improve wording (rust-lang/nomicon#408)
- Update to 2021 edition (rust-lang/nomicon#410)
## rust-lang/reference
5 commits in 28dc0f3576b55f5e57c5d6e65cd68ba3161e9fd5..553d99b02a53b4133a40d5bd2e19958c67487c00
2023-05-22 10:50:07 UTC to 2023-05-10 01:54:07 UTC
- Update raw-dylib documentation for stabilization (rust-lang/reference#1345)
- fix a typo (rust-lang/reference#1359)
- fixed minor error in a comment that annotated output of a proc macro (rust-lang/reference#1358)
- Fix example code in `impl` docs (rust-lang/reference#1360)
- Add documentation for debugger_visualizer attribute (rust-lang/reference#1335)
## rust-lang/rustc-dev-guide
4 commits in 28dbeaf5c44bc7f5111ad412e99f2d7c5cec6c90..f1e637883fafeb83bdd5906ee7f467e4d35b7337
2023-05-18 02:44:05 UTC to 2023-05-11 09:59:23 UTC
- Add note about shell completion scripts (rust-lang/rustc-dev-guide#1686)
- filter out S-blocked issues in the "Getting Started" search (rust-lang/rustc-dev-guide#1687)
- Rename InstCombine to InstSimplify (rust-lang/rustc-dev-guide#1684)
- Use unpretty for debugging Hir (rust-lang/rustc-dev-guide#1685)
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MCP: https://github.com/rust-lang/compiler-team/issues/518
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Only updated `exploit-mitigations.md` to reflect that the option exists. Removed the alternatives
mentioned as they are not actually implemented yet.
As this is an unstable feature, should it be added to `unstable-book` also? I didn't do that because
I couldn't find the tracking issue for it. (There should be one to track stabilization of the
feature.)
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Add esp-idf platform-support page
As mentioned in https://github.com/rust-lang/rust/pull/111369#issuecomment-1539881848, the initial PR for esp-idf didn't include a platform support document which is required for the merge of https://github.com/rust-lang/rust/pull/111369.
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Mark s390x condition code register as clobbered in inline assembly
Various s390x instructions (arithmetic operations, logical operations, comparisons, etc. see also "Condition Codes" section in [z/Architecture Reference Summary](https://www.ibm.com/support/pages/zarchitecture-reference-summary)) modify condition code register `cc`, but AFAIK there is currently no way to mark it as clobbered in `asm!`.
`cc` register definition in LLVM:
https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/SystemZ/SystemZRegisterInfo.td#L320
This PR also updates asm_experimental_arch docs in the unstable-book to mention s390x registers.
cc `@uweigand`
r? `@Amanieu`
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STD support for PSVita
This PR adds std support for `armv7-sony-vita-newlibeabihf` target.
The work here is fairly similar to #95897, just for a different target platform.
This depends on the following pull requests:
rust-lang/backtrace-rs#523
rust-lang/libc#3209
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Add deployment-target --print flag for Apple targets
This is very useful for crates that need to know what the Apple OS deployment target is for their build scripts or inside of a build environment. Right now, the defaults just get copy/pasted around the ecosystem since they've been stable for so long. But with #104385 in progress, that won't be true anymore and everything will need to move. Ideally whenever it happens again, this could be less painful as everything can ask the compiler what its default is instead.
To show examples of the copy/paste proliferation, here's some crates and/or apps that do:
- [cc](https://github.com/rust-lang/cc-rs/pull/708/files), Soon
- [mac-notification-sys](https://github.com/h4llow3En/mac-notification-sys/pull/46/files#diff-d0d98998092552a1d3259338c2c71e118a5b8343dd4703c0c7f552ada7f9cb42R10-R12)
- [PyO3](https://github.com/PyO3/maturin/blob/ccb02d1aa1cc41e82a3572a3c8b35cace15f3e78/src/target.rs#L755-L758)
- [Anki](https://github.com/ankitects/anki/blob/613b5c1034cc9943f3f68d818ae22b2e0acec877/build/runner/src/bundle/artifacts.rs#L49-L54)
- [jsc-rs](https://github.com/Brooooooklyn/jsc-rs/blob/37767267568fb2de62fc441473e7d158dd980520/xtask/src/build.rs#L402-L405)
... and probably more that a simple GitHub codesearch didn't see
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Stabilize raw-dylib, link_ordinal, import_name_type and -Cdlltool
This stabilizes the `raw-dylib` feature (#58713) for all architectures (i.e., `x86` as it is already stable for all other architectures).
Changes:
* Permit the use of the `raw-dylib` link kind for x86, the `link_ordinal` attribute and the `import_name_type` key for the `link` attribute.
* Mark the `raw_dylib` feature as stable.
* Stabilized the `-Zdlltool` argument as `-Cdlltool`.
* Note the path to `dlltool` if invoking it failed (we don't need to do this if `dlltool` returns an error since it prints its path in the error message).
* Adds tests for `-Cdlltool`.
* Adds tests for being unable to find the dlltool executable, and dlltool failing.
* Fixes a bug where we were checking the exit code of dlltool to see if it failed, but dlltool always returns 0 (indicating success), so instead we need to check if anything was written to `stderr`.
NOTE: As previously noted (https://github.com/rust-lang/rust/pull/104218#issuecomment-1315895618) using dlltool within rustc is temporary, but this is not the first time that Rust has added a temporary tool use and argument: https://github.com/rust-lang/rust/pull/104218#issuecomment-1318720482
Big thanks to ``````@tbu-`````` for the first version of this PR (#104218)
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Add cross-language LLVM CFI support to the Rust compiler
This PR adds cross-language LLVM Control Flow Integrity (CFI) support to the Rust compiler by adding the `-Zsanitizer-cfi-normalize-integers` option to be used with Clang `-fsanitize-cfi-icall-normalize-integers` for normalizing integer types (see https://reviews.llvm.org/D139395).
It provides forward-edge control flow protection for C or C++ and Rust -compiled code "mixed binaries" (i.e., for when C or C++ and Rust -compiled code share the same virtual address space). For more information about LLVM CFI and cross-language LLVM CFI support for the Rust compiler, see design document in the tracking issue #89653.
Cross-language LLVM CFI can be enabled with -Zsanitizer=cfi and -Zsanitizer-cfi-normalize-integers, and requires proper (i.e., non-rustc) LTO (i.e., -Clinker-plugin-lto).
Thank you again, ``@bjorn3,`` ``@nikic,`` ``@samitolvanen,`` and the Rust community for all the help!
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This commit updates the documentation for the LLVM Control Flow
Integrity (CFI) support in the Rust compiler.
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Stabilize debugger_visualizer
This stabilizes the `debugger_visualizer` attribute (#95939).
* Marks the `debugger_visualizer` feature as `accepted`.
* Marks the `debugger_visualizer` attribute as `ungated`.
* Deletes feature gate test, removes feature gate from other tests.
Closes #95939
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Use MIR's `Offset` for pointer `add` too
~~Status: draft while waiting for #110822 to land, since this is built atop that.~~
~~r? `@ghost~~`
Canonical Rust code has mostly moved to `add`/`sub` on pointers, which take `usize`, instead of `offset` which takes `isize`. (And, relatedly, when `sub_ptr` was added it turned out it replaced every single in-tree use of `offset_from`, because `usize` is just so much more useful than `isize` in Rust.)
Unfortunately, `intrinsics::offset` could only accept `*const` and `isize`, so there's a *huge* amount of type conversions back and forth being done. They're identity conversions in the backend, but still end up producing quite a lot of unhelpful MIR.
This PR changes `intrinsics::offset` to accept `*const` *and* `*mut` along with `isize` *and* `usize`. Conveniently, the backends and CTFE already handle this, since MIR's `BinOp::Offset` [already supports all four combinations](https://github.com/rust-lang/rust/blob/adaac6b166df57ea5a20d56e4cce503b55aca927/compiler/rustc_const_eval/src/transform/validate.rs#L523-L528).
To demonstrate the difference, I added some `mir-opt/pre-codegen/` tests around slice indexing. Here's the difference to `[T]::get_mut`, since it uses `<*mut _>::add` internally:
```diff
`@@` -79,30 +70,21 `@@` fn slice_get_mut_usize(_1: &mut [u32], _2: usize) -> Option<&mut u32> {
StorageLive(_12); // scope 3 at $SRC_DIR/core/src/slice/index.rs:LL:COL
StorageLive(_9); // scope 6 at $SRC_DIR/core/src/slice/index.rs:LL:COL
_9 = _8 as *mut u32 (PtrToPtr); // scope 11 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- StorageLive(_13); // scope 13 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- _13 = _2 as isize (IntToInt); // scope 13 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- StorageLive(_14); // scope 15 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- StorageLive(_15); // scope 15 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- _15 = _9 as *const u32 (Pointer(MutToConstPointer)); // scope 15 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- _14 = Offset(move _15, _13); // scope 15 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- StorageDead(_15); // scope 15 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- _7 = move _14 as *mut u32 (PtrToPtr); // scope 15 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- StorageDead(_14); // scope 15 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
- StorageDead(_13); // scope 13 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
+ _7 = Offset(_9, _2); // scope 13 at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
StorageDead(_9); // scope 6 at $SRC_DIR/core/src/slice/index.rs:LL:COL
StorageDead(_12); // scope 3 at $SRC_DIR/core/src/slice/index.rs:LL:COL
StorageDead(_11); // scope 3 at $SRC_DIR/core/src/slice/index.rs:LL:COL
```
https://github.com/rust-lang/rust/pull/110837/commits/1c1c8e442add0f46905a57a25a6cba52b8b0c54d#diff-a841b6a4538657add3f39bc895744331453d0625e7aace128b1f604f0b63c8fdR80
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Remove invalid value from scraped-examples.md
Fixes #110711
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r=compiler-errors
docs(style): add more let-else examples
Adding a few more examples for increased clarity based on subsequent discussion that arose after implementation work began.
Will need approval from t-style, but also cc ```@ytmimi``` to make sure these examples don't contradict any examples we've been incorporating as part of the rustfmt implementation
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Restructure and rename std thread_local internals to make it less of a maze
Every time I try to work on std's thread local internals, it feels like I'm trying to navigate a confusing maze made of macros, deeply nested modules, and types with multiple names/aliases. Time to clean it up a bit.
This PR:
- Exports `Key` with its own name (`Key`), instead of `__LocalKeyInner`
- Uses `pub macro` to put `__thread_local_inner` into a (unstable, hidden) module, removing `#[macro_export]`, removing it from the crate root.
- Removes the `__` from `__thread_local_inner`.
- Removes a few unnecessary `allow_internal_unstable` features from the macros
- Removes the `libstd_thread_internals` feature. (Merged with `thread_local_internals`.)
- And removes it from the unstable book
- Gets rid of the deeply nested modules for the `Key` definitions (`mod fast` / `mod os` / `mod statik`).
- Turns a `#[cfg]` mess into a single `cfg_if`, now that there's no `#[macro_export]` anymore that breaks with `cfg_if`.
- Simplifies the `cfg_if` conditions to not repeat the conditions.
- Removes useless `normalize-stderr-test`, which were left over from when the `Key` types had different names on different platforms.
- Removes a seemingly unnecessary `realstd` re-export on `cfg(test)`.
This PR changes nothing about the thread local implementation. That's for a later PR. (Which should hopefully be easier once all this stuff is a bit cleaned up.)
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Co-authored-by: Michael Goulet <michael@errs.io>
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Add new rustdoc book chapter to describe in-doc settings
Fixes #55165.
I continue going through old rustdoc issues. This one made a lot of sense so decided to add the missing chapter.
r? ``@notriddle``
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Spelling rustdoc
Split per https://github.com/rust-lang/rust/pull/110392#issuecomment-1510148682
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Add loongarch64 asm! support
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Add support for the x86_64h-apple-darwin target
See https://github.com/rust-lang/compiler-team/issues/599 for MCP.
r? compiler-team
CC `@BlackHoleFox` who recently overhauled the apple target code in `rustc-target`.
## Target Support Checklist
> - A tier 3 target must have a designated developer or developers (the "target
> maintainers") on record to be CCed when issues arise regarding the target.
> (The mechanism to track and CC such developers may evolve over time.)
I'm the designated developer.
> - Targets must use naming consistent with any existing targets; for instance, a
> target for the same CPU or OS as an existing Rust target should use the same
> name for that CPU or OS. Targets should normally use the same names and
> naming conventions as used elsewhere in the broader ecosystem beyond Rust
> (such as in other toolchains), unless they have a very good reason to
> diverge. Changing the name of a target can be highly disruptive, especially
> once the target reaches a higher tier, so getting the name right is important
> even for a tier 3 target.
This uses the same naming conventions used for the other macOS targets (`-apple-darwin`), combined with the convention used by LLVM for the `x86_64h` targets. LLVM's convention matches the architecture name used when invoking various tools such as `lipo`, `arch`, and (IMO) there's not really a compelling reason to depart from it.
> - Target names should not introduce undue confusion or ambiguity unless
> absolutely necessary to maintain ecosystem compatibility. For example, if
> the name of the target makes people extremely likely to form incorrect
> beliefs about what it targets, the name should be changed or augmented to
> disambiguate it.
I don't think this is especially likely, although I suppose someone could mistake it for `x86_64-apple-darwin`.
> - If possible, use only letters, numbers, dashes and underscores for the name.
> Periods (`.`) are known to cause issues in Cargo.
👍
> - Tier 3 targets may have unusual requirements to build or use, but must not
> create legal issues or impose onerous legal terms for the Rust project or for
> Rust developers or users.
> - The target must not introduce license incompatibilities.
It does not.
> - Anything added to the Rust repository must be under the standard Rust
> license (`MIT OR Apache-2.0`).
It is.
> - The target must not cause the Rust tools or libraries built for any other
> host (even when supporting cross-compilation to the target) to depend
> on any new dependency less permissive than the Rust licensing policy. This
> applies whether the dependency is a Rust crate that would require adding
> new license exceptions (as specified by the `tidy` tool in the
> rust-lang/rust repository), or whether the dependency is a native library
> or binary. In other words, the introduction of the target must not cause a
> user installing or running a version of Rust or the Rust tools to be
> subject to any new license requirements.
There are no new dependencies that don't also apply to `x86_64-apple-darwin`.
> - Compiling, linking, and emitting functional binaries, libraries, or other
> code for the target (whether hosted on the target itself or cross-compiling
> from another target) must not depend on proprietary (non-FOSS) libraries.
> Host tools built for the target itself may depend on the ordinary runtime
> libraries supplied by the platform and commonly used by other applications
> built for the target, but those libraries must not be required for code
> generation for the target; cross-compilation to the target must not require
> such libraries at all. For instance, `rustc` built for the target may
> depend on a common proprietary C runtime library or console output library,
> but must not depend on a proprietary code generation library or code
> optimization library. Rust's license permits such combinations, but the
> Rust project has no interest in maintaining such combinations within the
> scope of Rust itself, even at tier 3.
This has the same requirements as the other macOS targets (e.g. `x86_64-apple-darwin` and similar).
> - "onerous" here is an intentionally subjective term. At a minimum, "onerous"
> legal/licensing terms include but are *not* limited to: non-disclosure
> requirements, non-compete requirements, contributor license agreements
> (CLAs) or equivalent, "non-commercial"/"research-only"/etc terms,
> requirements conditional on the employer or employment of any particular
> Rust developers, revocable terms, any requirements that create liability
> for the Rust project or its developers or users, or any requirements that
> adversely affect the livelihood or prospects of the Rust project or its
> developers or users.
No change here.
> - Neither this policy nor any decisions made regarding targets shall create any
> binding agreement or estoppel by any party. If any member of an approving
> Rust team serves as one of the maintainers of a target, or has any legal or
> employment requirement (explicit or implicit) that might affect their
> decisions regarding a target, they must recuse themselves from any approval
> decisions regarding the target's tier status, though they may otherwise
> participate in discussions.
👍
> - This requirement does not prevent part or all of this policy from being
> cited in an explicit contract or work agreement (e.g. to implement or
> maintain support for a target). This requirement exists to ensure that a
> developer or team responsible for reviewing and approving a target does not
> face any legal threats or obligations that would prevent them from freely
> exercising their judgment in such approval, even if such judgment involves
> subjective matters or goes beyond the letter of these requirements.
👍
> - Tier 3 targets should attempt to implement as much of the standard libraries
> as possible and appropriate (`core` for most targets, `alloc` for targets
> that can support dynamic memory allocation, `std` for targets with an
> operating system or equivalent layer of system-provided functionality), but
> may leave some code unimplemented (either unavailable or stubbed out as
> appropriate), whether because the target makes it impossible to implement or
> challenging to implement. The authors of pull requests are not obligated to
> avoid calling any portions of the standard library on the basis of a tier 3
> target not implementing those portions.
The standard library tests seem to pass.
> - The target must provide documentation for the Rust community explaining how
> to build for the target, using cross-compilation if possible. If the target
> supports running binaries, or running tests (even if they do not pass), the
> documentation must explain how to run such binaries or tests for the target,
> using emulation if possible or dedicated hardware if necessary.
Documentation is provided.
> - Tier 3 targets must not impose burden on the authors of pull requests, or
> other developers in the community, to maintain the target. In particular,
> do not post comments (automated or manual) on a PR that derail or suggest a
> block on the PR based on a tier 3 target. Do not send automated messages or
> notifications (via any medium, including via ``@`)` to a PR author or others
> involved with a PR regarding a tier 3 target, unless they have opted into
> such messages.
Noted. This target is nearly identical to `x86_64-apple-darwin`, so this is
unlikely to cause issues anyway.
> - Backlinks such as those generated by the issue/PR tracker when linking to
> an issue or PR are not considered a violation of this policy, within
> reason. However, such messages (even on a separate repository) must not
> generate notifications to anyone involved with a PR who has not requested
> such notifications.
👍
> - Patches adding or updating tier 3 targets must not break any existing tier 2
> or tier 1 target, and must not knowingly break another tier 3 target without
> approval of either the compiler team or the maintainers of the other tier 3
> target.
> - In particular, this may come up when working on closely related targets,
> such as variations of the same architecture with different features. Avoid
> introducing unconditional uses of features that another variation of the
> target may not have; use conditional compilation or runtime detection, as
> appropriate, to let each target run code supported by that target.
👍
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GuillaumeGomez:disambiguators-suffixes-rustdoc-book, r=Manishearth
Add list of supported disambiguators and suffixes for intra-doc links in the rustdoc book
This information is otherwise only provided in case an error occurs, which isn't great.
r? ```@notriddle```
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Correct default value for default-linker-libraries
This setting is false by default according to rustc code here: https://github.com/rust-lang/rust/blob/master/compiler/rustc_session/src/options.rs#L1236
I tested on a project and confirmed the behavior described. First, with no value, the `-nodefaultlibs` linker flag is present. Setting this to false has no effect, as well. The linker flag still appears. Setting it to true removes the linker flag as expected.
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rustdoc book
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* incompatibilities
* invocation
* keywords
* nonexistent
* shakespeare
* the
* toolchain
* transparent
Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
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Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
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Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
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r=GuillaumeGomez
rustdoc-search: add support for nested generics
This change allows `search.js` to parse nested generics (which look `Like<This<Example>>`) and match them. It maintains the existing "bag semantics", so that the order of type parameters is ignored but the number is required to be greater than or equal to what's in the query.
For example, a function with the signature `fn read_all(&mut self: impl Read) -> Result<Vec<u8>, Error>` will match these queries:
* `Read -> Result<Vec<u8>, Error>`
* `Read -> Result<Error, Vec>`
* `Read -> Result<Vec<u8>>`
But it *does not* match `Result<Vec, u8>` or `Result<u8<Vec>>`.
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