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add ptr::from_{ref,mut} by RalfJung · Pull Request #104977 · rust-lang/rust · Gi...

 2 years ago
source link: https://github.com/rust-lang/rust/pull/104977
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add ptr::from_{ref,mut} #104977

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@RalfJung RalfJung commented Nov 27, 2022 •

edited

We have methods to avoid almost all as casts around raw pointer handling, except for the initial cast from reference to raw pointer. These new methods close that gap.

(I also moved null_mut next to null to keep the file consistently organized.)

r? libs-api

Tracking issue: #106116

joboet, kamulos, marmeladema, and DianaNites reacted with heart emoji

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added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue.

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Nov 27, 2022

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rustbot commented Nov 27, 2022

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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RalfJung commented Dec 21, 2022

@rust-lang/libs-api how do we make progress on this PR? It's just been sitting here for 3 weeks now.

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@dtolnay dtolnay left a comment

Seems good to me. Please file a tracking issue.

library/core/src/ptr/mod.rs

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RalfJung commented Dec 24, 2022

@bors r=dtolnay

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bors commented Dec 24, 2022

pushpin Commit 15f72dd has been approved by dtolnay

It is now in the queue for this repository.

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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.

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Dec 24, 2022

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bors commented Dec 24, 2022

hourglass Testing commit 15f72dd with merge ccbb329...

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bors commented Dec 24, 2022

broken_heart Test failed - checks-actions

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added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties.

and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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Dec 24, 2022

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rust-log-analyzer commented Dec 24, 2022

A job failed! Check out the build log: (web) (plain)

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dtolnay commented Dec 24, 2022 

curl: (6) Could not resolve host: ci-mirrors.rust-lang.org

@bors retry

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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.

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Dec 24, 2022

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bors commented Dec 24, 2022

hourglass Testing commit 15f72dd with merge 7e4f466...

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bors commented Dec 24, 2022

sunny Test successful - checks-actions
Approved by: dtolnay
Pushing 7e4f466 to master...

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added the merged-by-bors This PR was explicitly merged by bors label

Dec 24, 2022

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merged commit 7e4f466 into

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Dec 24, 2022

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rust-timer commented Dec 24, 2022

Finished benchmarking commit (7e4f466): comparison URL.

Overall result: white_check_mark 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 x
(primary)		 - - 0
Regressions x
(secondary)		 - - 0
Improvements white_check_mark
(primary)		 - - 0
Improvements white_check_mark
(secondary)		 -4.0% [-4.0%, -4.0%] 1
All xwhite_check_mark (primary) - - 0

Max RSS (memory usage)

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

Cycles

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

RalfJung

deleted the ptr-from-ref branch

Dec 27, 2022

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