Rename macro `SmartPointer` to `CoercePointee` #131284

dingxiangfei2009 · 2024-10-05T09:49:28Z

As per resolution #129104 we will rename the macro to better reflect the technical specification of the feature and clarify the communication.

SmartPointer is renamed to CoercePointee
#![feature(derive_smart_pointer)] gate is renamed to #![feature(derive_coerce_pointee)].
Any mention of SmartPointer in the file names are renamed accordingly.

r? @compiler-errors

cc @nikomatsakis @Darksonn

dingxiangfei2009 · 2024-10-05T09:50:00Z

@rustbot labels +F-derive_smart_pointer

dingxiangfei2009 · 2024-10-05T09:51:33Z

library/core/src/marker.rs

-#[unstable(feature = "derive_smart_pointer", issue = "123430")]
-pub macro SmartPointer($item:item) {
+#[unstable(feature = "dervie_coerce_referent", issue = "123430")]
+#[cfg(not(bootstrap))]


I will remove this in the next beta release.

You don't need to remove it; it'll get removed by the release team member doing the beta release.

compiler-errors · 2024-10-05T14:30:19Z

@rustbot blocked

Blocked on FCP finishing

compiler-errors · 2024-10-05T14:30:52Z

compiler/rustc_feature/src/unstable.rs

    (incomplete, deref_patterns, "1.79.0", Some(87121)),
-    /// Allows deriving `SmartPointer` traits
-    (unstable, derive_smart_pointer, "1.79.0", Some(123430)),
+    /// Allows deriving `CoerceReferent` traits


I believe you should register derive_smart_pointer as a removed feature, or perhaps look into how we've handled renamed features in the past.

Applied. I moved it into the removed list.

bors · 2024-10-07T22:00:02Z

☔ The latest upstream changes (presumably #131372) made this pull request unmergeable. Please resolve the merge conflicts.

dingxiangfei2009 · 2024-10-09T19:34:15Z

@rustbot ready

The latest decision as per comment is CoercePointee.

compiler-errors · 2024-10-09T19:37:14Z

This is still waiting for the FCP to finish. To avoid additional churn, and since I see no rush here:

@rustbot blocked

bors · 2024-10-12T21:54:02Z

☔ The latest upstream changes (presumably #131612) made this pull request unmergeable. Please resolve the merge conflicts.

move derive_smart_pointer into removed set

compiler-errors · 2024-10-23T18:20:08Z

compiler/rustc_feature/src/unstable.rs

+    /// Allows deriving traits as per `CoercePointee` specification
+    (unstable, derive_coerce_pointee, "1.79.0", Some(123430)),


Why is this a lang feature at all? The feature gating should be a library feature, since all this gates is a macro, and no behavior in the compiler.

I believe that you can remove this.

nikomatsakis · 2024-10-23T18:27:35Z

compiler/rustc_feature/src/unstable.rs

+    /// Allows deriving traits as per `CoercePointee` specification
+    (unstable, derive_coerce_pointee, "1.79.0", Some(123430)),


Suggested change

/// Allows deriving traits as per `CoercePointee` specification

(unstable, derive_coerce_pointee, "1.79.0", Some(123430)),

per @compiler-errors's comment

compiler-errors · 2024-10-27T15:41:39Z

@bors r+

bors · 2024-10-27T15:41:41Z

📌 Commit 6cb84fe has been approved by compiler-errors

It is now in the queue for this repository.

bors · 2024-10-27T17:04:16Z

⌛ Testing commit 6cb84fe with merge 81d6652...

bors · 2024-10-27T19:59:11Z

☀️ Test successful - checks-actions
Approved by: compiler-errors
Pushing 81d6652 to master...

rust-timer · 2024-10-27T21:18:12Z

Finished benchmarking commit (81d6652): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

Instruction count

This is the most reliable metric that we have; it was used to determine the overall result at the top of this comment. However, even this metric can sometimes exhibit noise.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.4%	[-2.4%, -2.4%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (secondary -3.2%)

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)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-3.2%	[-5.0%, -1.5%]	2
All ❌✅ (primary)	-	-	0

Cycles

Results (secondary 9.3%)

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)	9.3%	[9.1%, 9.6%]	2
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

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

Bootstrap: 783.479s -> 782.673s (-0.10%)
Artifact size: 333.71 MiB -> 333.75 MiB (0.01%)

oxalica · 2024-11-15T19:48:50Z

The issue description (first comment) does not match the implementation. Can we update it?

dingxiangfei2009 · 2024-11-29T11:29:51Z

@oxalica

Thank you for pointing it out! I have updated the description.

There had been flips and flops on terminology back then. This will finally set the record straight.

rustbot assigned compiler-errors Oct 5, 2024

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. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Oct 5, 2024

rustbot added the F-derive_coerce_pointee Feature: RFC 3621's oft-renamed implementation label Oct 5, 2024

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dingxiangfei2009 force-pushed the rename-smart-ptr-to-coerce-referent branch from 2d31f15 to ffef110 Compare October 5, 2024 10:02

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dingxiangfei2009 force-pushed the rename-smart-ptr-to-coerce-referent branch 2 times, most recently from a761a7b to b5f8711 Compare October 5, 2024 10:19

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dingxiangfei2009 changed the title ~~Rename macro SmartPointer to CoerceReferent~~ Rename macro SmartPointer to CoercePointee Oct 9, 2024

dingxiangfei2009 force-pushed the rename-smart-ptr-to-coerce-referent branch from d83b461 to ad79281 Compare October 9, 2024 19:36

rustbot added S-blocked Status: Blocked on something else such as an RFC or other implementation work. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 9, 2024

s/SmartPointer/CoerceReferent/g

fd36b3a

move derive_smart_pointer into removed set

rustbot added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Oct 23, 2024

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nikomatsakis mentioned this pull request Oct 26, 2024

Getting Rust for Linux into stable Rust: language features rust-lang/rust-project-goals#116

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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 Oct 27, 2024

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Rollup of 3 pull requests #132229

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Remove P<> from visit_s in ast MutVisitor #132112

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Support multiple stability attributes on items #131824

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dingxiangfei2009 deleted the rename-smart-ptr-to-coerce-referent branch October 31, 2024 21:19

Darksonn mentioned this pull request Nov 15, 2024

Decide on name for derive(SmartPtr) #129104

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ojeda mentioned this pull request Nov 16, 2024

Rust unstable features needed for the kernel Rust-for-Linux/linux#2

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		/// Allows deriving traits as per `CoercePointee` specification
		(unstable, derive_coerce_pointee, "1.79.0", Some(123430)),

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Rename macro SmartPointer to CoercePointee #131284

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Overall result: ✅ improvements - no action needed

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Rename macro `SmartPointer` to `CoercePointee` #131284

Rename macro `SmartPointer` to `CoercePointee` #131284

dingxiangfei2009 commented Oct 5, 2024 •

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