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Uplift clippy::cast_ref_to_mut lint #111567

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merged 4 commits into from
Jun 1, 2023
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@Urgau Urgau commented May 14, 2023

This PR aims at uplifting the clippy::cast_ref_to_mut lint into rustc.

cast_ref_to_mut

ℹ️ The lint has been renamed to invalid_reference_casting in #113422 and #112431

(deny-by-default)

The cast_ref_to_mut lint checks for casts of &T to &mut T without using interior mutability.

Example

fn x(r: &i32) {
    unsafe {
        *(r as *const i32 as *mut i32) += 1;
    }
}

Explanation

Casting &T to &mut T without interior mutability is undefined behavior, as it's a violation of Rust reference aliasing requirements.


Mostly followed the instructions for uplifting a clippy lint described here: #99696 (review)

@rustbot label: +I-lang-nominated
r? compiler


For Clippy:

changelog: Moves: Uplifted clippy::cast_ref_to_mut into rustc

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels May 14, 2023
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rustbot commented May 14, 2023

The Miri subtree was changed

cc @rust-lang/miri

Some changes occurred in src/tools/clippy

cc @rust-lang/clippy

@rustbot rustbot added the I-lang-nominated Nominated for discussion during a lang team meeting. label May 14, 2023
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@Urgau Urgau force-pushed the uplift_cast_ref_to_mut branch 2 times, most recently from f54591e to 297ba1e Compare May 14, 2023 18:30
@Urgau Urgau force-pushed the uplift_cast_ref_to_mut branch 2 times, most recently from d670ce9 to fb53336 Compare May 14, 2023 19:06
@oli-obk oli-obk added T-lang Relevant to the language team, which will review and decide on the PR/issue. and removed T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels May 16, 2023
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tmandry commented May 16, 2023

@rfcbot fcp merge

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rfcbot commented May 16, 2023

Team member @tmandry has proposed to merge this. The next step is review by the rest of the tagged team members:

No concerns currently listed.

Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

cc @rust-lang/lang-advisors: FCP proposed for lang, please feel free to register concerns.
See this document for info about what commands tagged team members can give me.

@rfcbot rfcbot added proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. labels May 16, 2023
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Sadly this wouldn't catch the https://blog.rust-lang.org/2017/02/09/Rust-1.15.1.html#whats-in-1151-stable issue, but still sounds like a good lint.

It would be nice if it could also catch things like

*ptr::from_ref(r).cast_mut() += 1;

but that doesn't need to block accepting this.

@rfcbot reviewed

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@rfcbot reviewed

@rfcbot rfcbot added the final-comment-period In the final comment period and will be merged soon unless new substantive objections are raised. label May 16, 2023
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rfcbot commented May 16, 2023

🔔 This is now entering its final comment period, as per the review above. 🔔

@rfcbot rfcbot removed the proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. label May 16, 2023
@Urgau Urgau force-pushed the uplift_cast_ref_to_mut branch from fb53336 to 6c231a9 Compare May 17, 2023 14:34
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rustbot commented May 17, 2023

Hey! It looks like you've submitted a new PR for the library teams!

If this PR contains changes to any rust-lang/rust public library APIs then please comment with @rustbot label +T-libs-api -T-libs to tag it appropriately. If this PR contains changes to any unstable APIs please edit the PR description to add a link to the relevant API Change Proposal or create one if you haven't already. If you're unsure where your change falls no worries, just leave it as is and the reviewer will take a look and make a decision to forward on if necessary.

Examples of T-libs-api changes:

  • Stabilizing library features
  • Introducing insta-stable changes such as new implementations of existing stable traits on existing stable types
  • Introducing new or changing existing unstable library APIs (excluding permanently unstable features / features without a tracking issue)
  • Changing public documentation in ways that create new stability guarantees
  • Changing observable runtime behavior of library APIs

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bors commented May 20, 2023

☔ The latest upstream changes (presumably #111799) made this pull request unmergeable. Please resolve the merge conflicts.

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Urgau commented May 23, 2023

@rustbot label -I-lang-nominated

@rustbot rustbot removed the I-lang-nominated Nominated for discussion during a lang team meeting. label May 23, 2023
@rfcbot rfcbot added finished-final-comment-period The final comment period is finished for this PR / Issue. and removed final-comment-period In the final comment period and will be merged soon unless new substantive objections are raised. labels May 26, 2023
@Urgau Urgau force-pushed the uplift_cast_ref_to_mut branch from 6c231a9 to 32d4e1c Compare May 31, 2023 11:43
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b-naber commented May 31, 2023

@bors r+

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bors commented May 31, 2023

📌 Commit 32d4e1c has been approved by b-naber

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels May 31, 2023
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bors commented Jun 1, 2023

⌛ Testing commit 32d4e1c with merge ba1690b...

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bors commented Jun 1, 2023

☀️ Test successful - checks-actions
Approved by: b-naber
Pushing ba1690b to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Jun 1, 2023
@bors bors merged commit ba1690b into rust-lang:master Jun 1, 2023
@rustbot rustbot added this to the 1.72.0 milestone Jun 1, 2023
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Finished benchmarking commit (ba1690b): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
-0.7% [-0.7%, -0.7%] 1
All ❌✅ (primary) - - 0

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
2.9% [2.3%, 3.5%] 2
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
-2.5% [-2.5%, -2.5%] 1
All ❌✅ (primary) - - 0

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 644.991s -> 644.818s (-0.03%)

@Urgau Urgau deleted the uplift_cast_ref_to_mut branch June 1, 2023 07:51
@apiraino apiraino removed the to-announce Announce this issue on triage meeting label Jun 15, 2023
bors added a commit to rust-lang-ci/rust that referenced this pull request Aug 2, 2023
…=Nilstrieb

Improve `invalid_reference_casting` lint

This PR is a follow-up to rust-lang#111567 and rust-lang#113422.

This PR does multiple things:
 - First it adds support for deferred de-reference, the goal is to support code like this, where the casting and de-reference are not done on the same expression
    ```rust
    let myself = self as *const Self as *mut Self;
    *myself = Self::Ready(value);
    ```
 - Second it does not lint anymore on SB/TB UB code by only checking assignments (`=`, `+=`, ...) and creation of mutable references `&mut *`
 - Thirdly it greatly improves the diagnostics in particular for cast from `&mut` to `&mut` or assignments
 - ~~And lastly it renames the lint from `cast_ref_to_mut` to `invalid_reference_casting` which is more consistent with the ["rules"](rust-lang/rust-clippy#2845) and also more consistent with what the lint checks~~ *rust-lang#113422

This PR is best reviewed commit by commit.

r? compiler
github-actions bot pushed a commit to rust-lang/miri that referenced this pull request Aug 3, 2023
Improve `invalid_reference_casting` lint

This PR is a follow-up to rust-lang/rust#111567 and rust-lang/rust#113422.

This PR does multiple things:
 - First it adds support for deferred de-reference, the goal is to support code like this, where the casting and de-reference are not done on the same expression
    ```rust
    let myself = self as *const Self as *mut Self;
    *myself = Self::Ready(value);
    ```
 - Second it does not lint anymore on SB/TB UB code by only checking assignments (`=`, `+=`, ...) and creation of mutable references `&mut *`
 - Thirdly it greatly improves the diagnostics in particular for cast from `&mut` to `&mut` or assignments
 - ~~And lastly it renames the lint from `cast_ref_to_mut` to `invalid_reference_casting` which is more consistent with the ["rules"](rust-lang/rust-clippy#2845) and also more consistent with what the lint checks~~ *rust-lang/rust#113422

This PR is best reviewed commit by commit.

r? compiler
1715173329 added a commit to 1715173329/packages-official that referenced this pull request Aug 26, 2023
Version 1.72.0 (2023-08-24)
==========================

Language
--------

- [Replace const eval limit by a lint and add an exponential backoff warning](rust-lang/rust#103877)
- [expand: Change how `#![cfg(FALSE)]` behaves on crate root](rust-lang/rust#110141)
- [Stabilize inline asm for LoongArch64](rust-lang/rust#111235)
- [Uplift `clippy::undropped_manually_drops` lint](rust-lang/rust#111530)
- [Uplift `clippy::invalid_utf8_in_unchecked` lint](rust-lang/rust#111543)
- [Uplift `clippy::cast_ref_to_mut` lint](rust-lang/rust#111567)
- [Uplift `clippy::cmp_nan` lint](rust-lang/rust#111818)
- [resolve: Remove artificial import ambiguity errors](rust-lang/rust#112086)
- [Don't require associated types with Self: Sized bounds in `dyn Trait` objects](rust-lang/rust#112319)

Compiler
--------

- [Remember names of `cfg`-ed out items to mention them in diagnostics](rust-lang/rust#109005)
- [Support for native WASM exceptions](rust-lang/rust#111322)
- [Add support for NetBSD/aarch64-be (big-endian arm64).](rust-lang/rust#111326)
- [Write to stdout if `-` is given as output file](rust-lang/rust#111626)
- [Force all native libraries to be statically linked when linking a static binary](rust-lang/rust#111698)
- [Add Tier 3 support for `loongarch64-unknown-none*`](rust-lang/rust#112310)
- [Prevent `.eh_frame` from being emitted for `-C panic=abort`](rust-lang/rust#112403)
- [Support 128-bit enum variant in debuginfo codegen](rust-lang/rust#112474)
- [compiler: update solaris/illumos to enable tsan support.](rust-lang/rust#112039)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

Libraries
---------

- [Document memory orderings of `thread::{park, unpark}`](rust-lang/rust#99587)
- [io: soften ‘at most one write attempt’ requirement in io::Write::write](rust-lang/rust#107200)
- [Specify behavior of HashSet::insert](rust-lang/rust#107619)
- [Relax implicit `T: Sized` bounds on `BufReader<T>`, `BufWriter<T>` and `LineWriter<T>`](rust-lang/rust#111074)
- [Update runtime guarantee for `select_nth_unstable`](rust-lang/rust#111974)
- [Return `Ok` on kill if process has already exited](rust-lang/rust#112594)
- [Implement PartialOrd for `Vec`s over different allocators](rust-lang/rust#112632)
- [Use 128 bits for TypeId hash](rust-lang/rust#109953)
- [Don't drain-on-drop in DrainFilter impls of various collections.](rust-lang/rust#104455)
- [Make `{Arc,Rc,Weak}::ptr_eq` ignore pointer metadata](rust-lang/rust#106450)

Rustdoc
-------

- [Allow whitespace as path separator like double colon](rust-lang/rust#108537)
- [Add search result item types after their name](rust-lang/rust#110688)
- [Search for slices and arrays by type with `[]`](rust-lang/rust#111958)
- [Clean up type unification and "unboxing"](rust-lang/rust#112233)

Stabilized APIs
---------------

- [`impl<T: Send> Sync for mpsc::Sender<T>`](https://doc.rust-lang.org/nightly/std/sync/mpsc/struct.Sender.html#impl-Sync-for-Sender%3CT%3E)
- [`impl TryFrom<&OsStr> for &str`](https://doc.rust-lang.org/nightly/std/primitive.str.html#impl-TryFrom%3C%26'a+OsStr%3E-for-%26'a+str)
- [`String::leak`](https://doc.rust-lang.org/nightly/alloc/string/struct.String.html#method.leak)

These APIs are now stable in const contexts:

- [`CStr::from_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_str`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)

Cargo
-----

- Enable `-Zdoctest-in-workspace` by default. When running each documentation
  test, the working directory is set to the root directory of the package the
  test belongs to.
  [docs](https://doc.rust-lang.org/nightly/cargo/commands/cargo-test.html#working-directory-of-tests)
  [openwrt#12221](rust-lang/cargo#12221)
  [openwrt#12288](rust-lang/cargo#12288)
- Add support of the "default" keyword to reset previously set `build.jobs`
  parallelism back to the default.
  [openwrt#12222](rust-lang/cargo#12222)

Compatibility Notes
-------------------

- [Alter `Display` for `Ipv6Addr` for IPv4-compatible addresses](rust-lang/rust#112606)
- Cargo changed feature name validation check to a hard error. The warning was
  added in Rust 1.49. These extended characters aren't allowed on crates.io, so
  this should only impact users of other registries, or people who don't publish
  to a registry.
  [openwrt#12291](rust-lang/cargo#12291)

Refreshed patches.

Signed-off-by: Tianling Shen <[email protected]>
1715173329 added a commit to 1715173329/packages-official that referenced this pull request Aug 26, 2023
Version 1.72.0 (2023-08-24)
==========================

Language
--------
- [Replace const eval limit by a lint and add an exponential backoff warning](rust-lang/rust#103877)
- [expand: Change how `#![cfg(FALSE)]` behaves on crate root](rust-lang/rust#110141)
- [Stabilize inline asm for LoongArch64](rust-lang/rust#111235)
- [Uplift `clippy::undropped_manually_drops` lint](rust-lang/rust#111530)
- [Uplift `clippy::invalid_utf8_in_unchecked` lint](rust-lang/rust#111543)
- [Uplift `clippy::cast_ref_to_mut` lint](rust-lang/rust#111567)
- [Uplift `clippy::cmp_nan` lint](rust-lang/rust#111818)
- [resolve: Remove artificial import ambiguity errors](rust-lang/rust#112086)
- [Don't require associated types with Self: Sized bounds in `dyn Trait` objects](rust-lang/rust#112319)

Compiler
--------
- [Remember names of `cfg`-ed out items to mention them in diagnostics](rust-lang/rust#109005)
- [Support for native WASM exceptions](rust-lang/rust#111322)
- [Add support for NetBSD/aarch64-be (big-endian arm64).](rust-lang/rust#111326)
- [Write to stdout if `-` is given as output file](rust-lang/rust#111626)
- [Force all native libraries to be statically linked when linking a static binary](rust-lang/rust#111698)
- [Add Tier 3 support for `loongarch64-unknown-none*`](rust-lang/rust#112310)
- [Prevent `.eh_frame` from being emitted for `-C panic=abort`](rust-lang/rust#112403)
- [Support 128-bit enum variant in debuginfo codegen](rust-lang/rust#112474)
- [compiler: update solaris/illumos to enable tsan support.](rust-lang/rust#112039)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

Libraries
---------
- [Document memory orderings of `thread::{park, unpark}`](rust-lang/rust#99587)
- [io: soften ‘at most one write attempt’ requirement in io::Write::write](rust-lang/rust#107200)
- [Specify behavior of HashSet::insert](rust-lang/rust#107619)
- [Relax implicit `T: Sized` bounds on `BufReader<T>`, `BufWriter<T>` and `LineWriter<T>`](rust-lang/rust#111074)
- [Update runtime guarantee for `select_nth_unstable`](rust-lang/rust#111974)
- [Return `Ok` on kill if process has already exited](rust-lang/rust#112594)
- [Implement PartialOrd for `Vec`s over different allocators](rust-lang/rust#112632)
- [Use 128 bits for TypeId hash](rust-lang/rust#109953)
- [Don't drain-on-drop in DrainFilter impls of various collections.](rust-lang/rust#104455)
- [Make `{Arc,Rc,Weak}::ptr_eq` ignore pointer metadata](rust-lang/rust#106450)

Rustdoc
-------
- [Allow whitespace as path separator like double colon](rust-lang/rust#108537)
- [Add search result item types after their name](rust-lang/rust#110688)
- [Search for slices and arrays by type with `[]`](rust-lang/rust#111958)
- [Clean up type unification and "unboxing"](rust-lang/rust#112233)

Stabilized APIs
---------------
- [`impl<T: Send> Sync for mpsc::Sender<T>`](https://doc.rust-lang.org/nightly/std/sync/mpsc/struct.Sender.html#impl-Sync-for-Sender%3CT%3E)
- [`impl TryFrom<&OsStr> for &str`](https://doc.rust-lang.org/nightly/std/primitive.str.html#impl-TryFrom%3C%26'a+OsStr%3E-for-%26'a+str)
- [`String::leak`](https://doc.rust-lang.org/nightly/alloc/string/struct.String.html#method.leak)

These APIs are now stable in const contexts:

- [`CStr::from_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_str`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)

Cargo
-----
- Enable `-Zdoctest-in-workspace` by default. When running each documentation
  test, the working directory is set to the root directory of the package the
  test belongs to.
  [docs](https://doc.rust-lang.org/nightly/cargo/commands/cargo-test.html#working-directory-of-tests)
  [openwrt#12221](rust-lang/cargo#12221)
  [openwrt#12288](rust-lang/cargo#12288)
- Add support of the "default" keyword to reset previously set `build.jobs`
  parallelism back to the default.
  [openwrt#12222](rust-lang/cargo#12222)

Compatibility Notes
-------------------
- [Alter `Display` for `Ipv6Addr` for IPv4-compatible addresses](rust-lang/rust#112606)
- Cargo changed feature name validation check to a hard error. The warning was
  added in Rust 1.49. These extended characters aren't allowed on crates.io, so
  this should only impact users of other registries, or people who don't publish
  to a registry.
  [openwrt#12291](rust-lang/cargo#12291)

Refreshed patches.

Signed-off-by: Tianling Shen <[email protected]>
jefferyto pushed a commit to jefferyto/openwrt-packages that referenced this pull request Sep 21, 2023
Version 1.72.0 (2023-08-24)
==========================

Language
--------
- [Replace const eval limit by a lint and add an exponential backoff warning](rust-lang/rust#103877)
- [expand: Change how `#![cfg(FALSE)]` behaves on crate root](rust-lang/rust#110141)
- [Stabilize inline asm for LoongArch64](rust-lang/rust#111235)
- [Uplift `clippy::undropped_manually_drops` lint](rust-lang/rust#111530)
- [Uplift `clippy::invalid_utf8_in_unchecked` lint](rust-lang/rust#111543)
- [Uplift `clippy::cast_ref_to_mut` lint](rust-lang/rust#111567)
- [Uplift `clippy::cmp_nan` lint](rust-lang/rust#111818)
- [resolve: Remove artificial import ambiguity errors](rust-lang/rust#112086)
- [Don't require associated types with Self: Sized bounds in `dyn Trait` objects](rust-lang/rust#112319)

Compiler
--------
- [Remember names of `cfg`-ed out items to mention them in diagnostics](rust-lang/rust#109005)
- [Support for native WASM exceptions](rust-lang/rust#111322)
- [Add support for NetBSD/aarch64-be (big-endian arm64).](rust-lang/rust#111326)
- [Write to stdout if `-` is given as output file](rust-lang/rust#111626)
- [Force all native libraries to be statically linked when linking a static binary](rust-lang/rust#111698)
- [Add Tier 3 support for `loongarch64-unknown-none*`](rust-lang/rust#112310)
- [Prevent `.eh_frame` from being emitted for `-C panic=abort`](rust-lang/rust#112403)
- [Support 128-bit enum variant in debuginfo codegen](rust-lang/rust#112474)
- [compiler: update solaris/illumos to enable tsan support.](rust-lang/rust#112039)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

Libraries
---------
- [Document memory orderings of `thread::{park, unpark}`](rust-lang/rust#99587)
- [io: soften ‘at most one write attempt’ requirement in io::Write::write](rust-lang/rust#107200)
- [Specify behavior of HashSet::insert](rust-lang/rust#107619)
- [Relax implicit `T: Sized` bounds on `BufReader<T>`, `BufWriter<T>` and `LineWriter<T>`](rust-lang/rust#111074)
- [Update runtime guarantee for `select_nth_unstable`](rust-lang/rust#111974)
- [Return `Ok` on kill if process has already exited](rust-lang/rust#112594)
- [Implement PartialOrd for `Vec`s over different allocators](rust-lang/rust#112632)
- [Use 128 bits for TypeId hash](rust-lang/rust#109953)
- [Don't drain-on-drop in DrainFilter impls of various collections.](rust-lang/rust#104455)
- [Make `{Arc,Rc,Weak}::ptr_eq` ignore pointer metadata](rust-lang/rust#106450)

Rustdoc
-------
- [Allow whitespace as path separator like double colon](rust-lang/rust#108537)
- [Add search result item types after their name](rust-lang/rust#110688)
- [Search for slices and arrays by type with `[]`](rust-lang/rust#111958)
- [Clean up type unification and "unboxing"](rust-lang/rust#112233)

Stabilized APIs
---------------
- [`impl<T: Send> Sync for mpsc::Sender<T>`](https://doc.rust-lang.org/nightly/std/sync/mpsc/struct.Sender.html#impl-Sync-for-Sender%3CT%3E)
- [`impl TryFrom<&OsStr> for &str`](https://doc.rust-lang.org/nightly/std/primitive.str.html#impl-TryFrom%3C%26'a+OsStr%3E-for-%26'a+str)
- [`String::leak`](https://doc.rust-lang.org/nightly/alloc/string/struct.String.html#method.leak)

These APIs are now stable in const contexts:

- [`CStr::from_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_str`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)

Cargo
-----
- Enable `-Zdoctest-in-workspace` by default. When running each documentation
  test, the working directory is set to the root directory of the package the
  test belongs to.
  [docs](https://doc.rust-lang.org/nightly/cargo/commands/cargo-test.html#working-directory-of-tests)
  [openwrt#12221](rust-lang/cargo#12221)
  [openwrt#12288](rust-lang/cargo#12288)
- Add support of the "default" keyword to reset previously set `build.jobs`
  parallelism back to the default.
  [openwrt#12222](rust-lang/cargo#12222)

Compatibility Notes
-------------------
- [Alter `Display` for `Ipv6Addr` for IPv4-compatible addresses](rust-lang/rust#112606)
- Cargo changed feature name validation check to a hard error. The warning was
  added in Rust 1.49. These extended characters aren't allowed on crates.io, so
  this should only impact users of other registries, or people who don't publish
  to a registry.
  [openwrt#12291](rust-lang/cargo#12291)

Refreshed patches.

Signed-off-by: Tianling Shen <[email protected]>
(cherry picked from commit 846ee0b)
Signed-off-by: Jeffery To <[email protected]>
BKPepe pushed a commit to openwrt/packages that referenced this pull request Sep 21, 2023
Version 1.72.0 (2023-08-24)
==========================

Language
--------
- [Replace const eval limit by a lint and add an exponential backoff warning](rust-lang/rust#103877)
- [expand: Change how `#![cfg(FALSE)]` behaves on crate root](rust-lang/rust#110141)
- [Stabilize inline asm for LoongArch64](rust-lang/rust#111235)
- [Uplift `clippy::undropped_manually_drops` lint](rust-lang/rust#111530)
- [Uplift `clippy::invalid_utf8_in_unchecked` lint](rust-lang/rust#111543)
- [Uplift `clippy::cast_ref_to_mut` lint](rust-lang/rust#111567)
- [Uplift `clippy::cmp_nan` lint](rust-lang/rust#111818)
- [resolve: Remove artificial import ambiguity errors](rust-lang/rust#112086)
- [Don't require associated types with Self: Sized bounds in `dyn Trait` objects](rust-lang/rust#112319)

Compiler
--------
- [Remember names of `cfg`-ed out items to mention them in diagnostics](rust-lang/rust#109005)
- [Support for native WASM exceptions](rust-lang/rust#111322)
- [Add support for NetBSD/aarch64-be (big-endian arm64).](rust-lang/rust#111326)
- [Write to stdout if `-` is given as output file](rust-lang/rust#111626)
- [Force all native libraries to be statically linked when linking a static binary](rust-lang/rust#111698)
- [Add Tier 3 support for `loongarch64-unknown-none*`](rust-lang/rust#112310)
- [Prevent `.eh_frame` from being emitted for `-C panic=abort`](rust-lang/rust#112403)
- [Support 128-bit enum variant in debuginfo codegen](rust-lang/rust#112474)
- [compiler: update solaris/illumos to enable tsan support.](rust-lang/rust#112039)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

Libraries
---------
- [Document memory orderings of `thread::{park, unpark}`](rust-lang/rust#99587)
- [io: soften ‘at most one write attempt’ requirement in io::Write::write](rust-lang/rust#107200)
- [Specify behavior of HashSet::insert](rust-lang/rust#107619)
- [Relax implicit `T: Sized` bounds on `BufReader<T>`, `BufWriter<T>` and `LineWriter<T>`](rust-lang/rust#111074)
- [Update runtime guarantee for `select_nth_unstable`](rust-lang/rust#111974)
- [Return `Ok` on kill if process has already exited](rust-lang/rust#112594)
- [Implement PartialOrd for `Vec`s over different allocators](rust-lang/rust#112632)
- [Use 128 bits for TypeId hash](rust-lang/rust#109953)
- [Don't drain-on-drop in DrainFilter impls of various collections.](rust-lang/rust#104455)
- [Make `{Arc,Rc,Weak}::ptr_eq` ignore pointer metadata](rust-lang/rust#106450)

Rustdoc
-------
- [Allow whitespace as path separator like double colon](rust-lang/rust#108537)
- [Add search result item types after their name](rust-lang/rust#110688)
- [Search for slices and arrays by type with `[]`](rust-lang/rust#111958)
- [Clean up type unification and "unboxing"](rust-lang/rust#112233)

Stabilized APIs
---------------
- [`impl<T: Send> Sync for mpsc::Sender<T>`](https://doc.rust-lang.org/nightly/std/sync/mpsc/struct.Sender.html#impl-Sync-for-Sender%3CT%3E)
- [`impl TryFrom<&OsStr> for &str`](https://doc.rust-lang.org/nightly/std/primitive.str.html#impl-TryFrom%3C%26'a+OsStr%3E-for-%26'a+str)
- [`String::leak`](https://doc.rust-lang.org/nightly/alloc/string/struct.String.html#method.leak)

These APIs are now stable in const contexts:

- [`CStr::from_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_str`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)

Cargo
-----
- Enable `-Zdoctest-in-workspace` by default. When running each documentation
  test, the working directory is set to the root directory of the package the
  test belongs to.
  [docs](https://doc.rust-lang.org/nightly/cargo/commands/cargo-test.html#working-directory-of-tests)
  [#12221](rust-lang/cargo#12221)
  [#12288](rust-lang/cargo#12288)
- Add support of the "default" keyword to reset previously set `build.jobs`
  parallelism back to the default.
  [#12222](rust-lang/cargo#12222)

Compatibility Notes
-------------------
- [Alter `Display` for `Ipv6Addr` for IPv4-compatible addresses](rust-lang/rust#112606)
- Cargo changed feature name validation check to a hard error. The warning was
  added in Rust 1.49. These extended characters aren't allowed on crates.io, so
  this should only impact users of other registries, or people who don't publish
  to a registry.
  [#12291](rust-lang/cargo#12291)

Refreshed patches.

Signed-off-by: Tianling Shen <[email protected]>
(cherry picked from commit 846ee0b)
Signed-off-by: Jeffery To <[email protected]>
wip-sync pushed a commit to NetBSD/pkgsrc-wip that referenced this pull request Sep 24, 2023
Pkgsrc changes:
 * Adjust patches and cargo checksums to new versions.

Upstream changes:

Version 1.72.0 (2023-08-24)
==========================

Language
--------

- [Replace const eval limit by a lint and add an exponential backoff warning]
  (rust-lang/rust#103877)
- [expand: Change how `#![cfg(FALSE)]` behaves on crate root]
  (rust-lang/rust#110141)
- [Stabilize inline asm for LoongArch64]
  (rust-lang/rust#111235)
- [Uplift `clippy::undropped_manually_drops` lint]
  (rust-lang/rust#111530)
- [Uplift `clippy::invalid_utf8_in_unchecked` lint]
  (rust-lang/rust#111543)
- [Uplift `clippy::cast_ref_to_mut` lint]
  (rust-lang/rust#111567)
- [Uplift `clippy::cmp_nan` lint]
  (rust-lang/rust#111818)
- [resolve: Remove artificial import ambiguity errors]
  (rust-lang/rust#112086)
- [Don't require associated types with Self: Sized bounds in `dyn
  Trait` objects]
  (rust-lang/rust#112319)

Compiler
--------

- [Remember names of `cfg`-ed out items to mention them in diagnostics]
  (rust-lang/rust#109005)
- [Support for native WASM exceptions]
  (rust-lang/rust#111322)
- [Add support for NetBSD/aarch64-be (big-endian arm64).]
  (rust-lang/rust#111326)
- [Write to stdout if `-` is given as output file]
  (rust-lang/rust#111626)
- [Force all native libraries to be statically linked when linking
  a static binary]
  (rust-lang/rust#111698)
- [Add Tier 3 support for `loongarch64-unknown-none*`]
  (rust-lang/rust#112310)
- [Prevent `.eh_frame` from being emitted for `-C panic=abort`]
  (rust-lang/rust#112403)
- [Support 128-bit enum variant in debuginfo codegen]
  (rust-lang/rust#112474)
- [compiler: update solaris/illumos to enable tsan support.]
  (rust-lang/rust#112039)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

Libraries
---------

- [Document memory orderings of `thread::{park, unpark}`]
  (rust-lang/rust#99587)
- [io: soften â<80><98>at most one write attemptâ<80><99>
   requirement in io::Write::write]
  (rust-lang/rust#107200)
- [Specify behavior of HashSet::insert]
  (rust-lang/rust#107619)
- [Relax implicit `T: Sized` bounds on `BufReader<T>`, `BufWriter<T>`
  and `LineWriter<T>`]
  (rust-lang/rust#111074)
- [Update runtime guarantee for `select_nth_unstable`]
  (rust-lang/rust#111974)
- [Return `Ok` on kill if process has already exited]
  (rust-lang/rust#112594)
- [Implement PartialOrd for `Vec`s over different allocators]
  (rust-lang/rust#112632)
- [Use 128 bits for TypeId hash]
  (rust-lang/rust#109953)
- [Don't drain-on-drop in DrainFilter impls of various collections.]
  (rust-lang/rust#104455)
- [Make `{Arc,Rc,Weak}::ptr_eq` ignore pointer metadata]
  (rust-lang/rust#106450)

Rustdoc
-------

- [Allow whitespace as path separator like double colon]
  (rust-lang/rust#108537)
- [Add search result item types after their name]
  (rust-lang/rust#110688)
- [Search for slices and arrays by type with `[]`]
  (rust-lang/rust#111958)
- [Clean up type unification and "unboxing"]
  (rust-lang/rust#112233)

Stabilized APIs
---------------

- [`impl<T: Send> Sync for mpsc::Sender<T>`]
  (https://doc.rust-lang.org/nightly/std/sync/mpsc/struct.Sender.html#impl-Sync-for-Sender%3CT%3E)
- [`impl TryFrom<&OsStr> for &str`]
  (https://doc.rust-lang.org/nightly/std/primitive.str.html#impl-TryFrom%3C%26'a+OsStr%3E-for-%26'a+str)
- [`String::leak`]
  (https://doc.rust-lang.org/nightly/alloc/string/struct.String.html#method.leak)

These APIs are now stable in const contexts:

- [`CStr::from_bytes_with_nul`]
  (https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes`]
  (https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes_with_nul`]
  (https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_str`]
  (https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)

Cargo
-----

- Enable `-Zdoctest-in-workspace` by default. When running each documentation
  test, the working directory is set to the root directory of the package the
  test belongs to.
  [docs](https://doc.rust-lang.org/nightly/cargo/commands/cargo-test.html#working-directory-of-tests)
  [#12221](rust-lang/cargo#12221)
  [#12288](rust-lang/cargo#12288)
- Add support of the "default" keyword to reset previously set `build.jobs`
  parallelism back to the default.
  [#12222](rust-lang/cargo#12222)

Compatibility Notes
-------------------

- [Alter `Display` for `Ipv6Addr` for IPv4-compatible addresses]
  (rust-lang/rust#112606)
- Cargo changed feature name validation check to a hard error. The
  warning was added in Rust 1.49. These extended characters aren't
  allowed on crates.io, so this should only impact users of other
  registries, or people who don't publish to a registry.
  [#12291](rust-lang/cargo#12291)
thomcc pushed a commit to tcdi/postgrestd that referenced this pull request Oct 17, 2023
Improve `invalid_reference_casting` lint

This PR is a follow-up to rust-lang/rust#111567 and rust-lang/rust#113422.

This PR does multiple things:
 - First it adds support for deferred de-reference, the goal is to support code like this, where the casting and de-reference are not done on the same expression
    ```rust
    let myself = self as *const Self as *mut Self;
    *myself = Self::Ready(value);
    ```
 - Second it does not lint anymore on SB/TB UB code by only checking assignments (`=`, `+=`, ...) and creation of mutable references `&mut *`
 - Thirdly it greatly improves the diagnostics in particular for cast from `&mut` to `&mut` or assignments
 - ~~And lastly it renames the lint from `cast_ref_to_mut` to `invalid_reference_casting` which is more consistent with the ["rules"](rust-lang/rust-clippy#2845) and also more consistent with what the lint checks~~ *rust-lang/rust#113422

This PR is best reviewed commit by commit.

r? compiler
lu-zero pushed a commit to domo-iot/packages that referenced this pull request Oct 23, 2023
Version 1.72.0 (2023-08-24)
==========================

Language
--------
- [Replace const eval limit by a lint and add an exponential backoff warning](rust-lang/rust#103877)
- [expand: Change how `#![cfg(FALSE)]` behaves on crate root](rust-lang/rust#110141)
- [Stabilize inline asm for LoongArch64](rust-lang/rust#111235)
- [Uplift `clippy::undropped_manually_drops` lint](rust-lang/rust#111530)
- [Uplift `clippy::invalid_utf8_in_unchecked` lint](rust-lang/rust#111543)
- [Uplift `clippy::cast_ref_to_mut` lint](rust-lang/rust#111567)
- [Uplift `clippy::cmp_nan` lint](rust-lang/rust#111818)
- [resolve: Remove artificial import ambiguity errors](rust-lang/rust#112086)
- [Don't require associated types with Self: Sized bounds in `dyn Trait` objects](rust-lang/rust#112319)

Compiler
--------
- [Remember names of `cfg`-ed out items to mention them in diagnostics](rust-lang/rust#109005)
- [Support for native WASM exceptions](rust-lang/rust#111322)
- [Add support for NetBSD/aarch64-be (big-endian arm64).](rust-lang/rust#111326)
- [Write to stdout if `-` is given as output file](rust-lang/rust#111626)
- [Force all native libraries to be statically linked when linking a static binary](rust-lang/rust#111698)
- [Add Tier 3 support for `loongarch64-unknown-none*`](rust-lang/rust#112310)
- [Prevent `.eh_frame` from being emitted for `-C panic=abort`](rust-lang/rust#112403)
- [Support 128-bit enum variant in debuginfo codegen](rust-lang/rust#112474)
- [compiler: update solaris/illumos to enable tsan support.](rust-lang/rust#112039)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

Libraries
---------
- [Document memory orderings of `thread::{park, unpark}`](rust-lang/rust#99587)
- [io: soften ‘at most one write attempt’ requirement in io::Write::write](rust-lang/rust#107200)
- [Specify behavior of HashSet::insert](rust-lang/rust#107619)
- [Relax implicit `T: Sized` bounds on `BufReader<T>`, `BufWriter<T>` and `LineWriter<T>`](rust-lang/rust#111074)
- [Update runtime guarantee for `select_nth_unstable`](rust-lang/rust#111974)
- [Return `Ok` on kill if process has already exited](rust-lang/rust#112594)
- [Implement PartialOrd for `Vec`s over different allocators](rust-lang/rust#112632)
- [Use 128 bits for TypeId hash](rust-lang/rust#109953)
- [Don't drain-on-drop in DrainFilter impls of various collections.](rust-lang/rust#104455)
- [Make `{Arc,Rc,Weak}::ptr_eq` ignore pointer metadata](rust-lang/rust#106450)

Rustdoc
-------
- [Allow whitespace as path separator like double colon](rust-lang/rust#108537)
- [Add search result item types after their name](rust-lang/rust#110688)
- [Search for slices and arrays by type with `[]`](rust-lang/rust#111958)
- [Clean up type unification and "unboxing"](rust-lang/rust#112233)

Stabilized APIs
---------------
- [`impl<T: Send> Sync for mpsc::Sender<T>`](https://doc.rust-lang.org/nightly/std/sync/mpsc/struct.Sender.html#impl-Sync-for-Sender%3CT%3E)
- [`impl TryFrom<&OsStr> for &str`](https://doc.rust-lang.org/nightly/std/primitive.str.html#impl-TryFrom%3C%26'a+OsStr%3E-for-%26'a+str)
- [`String::leak`](https://doc.rust-lang.org/nightly/alloc/string/struct.String.html#method.leak)

These APIs are now stable in const contexts:

- [`CStr::from_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_bytes_with_nul`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)
- [`CStr::to_str`](https://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.from_bytes_with_nul)

Cargo
-----
- Enable `-Zdoctest-in-workspace` by default. When running each documentation
  test, the working directory is set to the root directory of the package the
  test belongs to.
  [docs](https://doc.rust-lang.org/nightly/cargo/commands/cargo-test.html#working-directory-of-tests)
  [openwrt#12221](rust-lang/cargo#12221)
  [openwrt#12288](rust-lang/cargo#12288)
- Add support of the "default" keyword to reset previously set `build.jobs`
  parallelism back to the default.
  [openwrt#12222](rust-lang/cargo#12222)

Compatibility Notes
-------------------
- [Alter `Display` for `Ipv6Addr` for IPv4-compatible addresses](rust-lang/rust#112606)
- Cargo changed feature name validation check to a hard error. The warning was
  added in Rust 1.49. These extended characters aren't allowed on crates.io, so
  this should only impact users of other registries, or people who don't publish
  to a registry.
  [openwrt#12291](rust-lang/cargo#12291)

Refreshed patches.

Signed-off-by: Tianling Shen <[email protected]>
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