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Stabilize const_refs_to_static #129759

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dingxiangfei2009
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@dingxiangfei2009 dingxiangfei2009 commented Aug 29, 2024

Close #128183
Tracked by #119618
cc @nikomatsakis

Meanwhile, I am cooking a sub-section in the language reference.

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rustbot commented Aug 29, 2024

r? @petrochenkov

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@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 Aug 29, 2024
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Blocked on #129472.
@rustbot blocked

@rustbot rustbot added S-blocked Status: Marked as 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 Aug 30, 2024
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@rustbot ready

(#129472 has been merged.)

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-blocked Status: Marked as blocked ❌ on something else such as an RFC or other implementation work. labels Sep 6, 2024
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Looks like FCP in #128183 (comment) has completed yesterday.

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The implementation seems trivial, so I can review and approve, but if you want someone from the const eval group to do that, feel free to reassign.

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This also needs a rebase and a fix for the error index.
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@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Sep 7, 2024
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rustbot commented Sep 11, 2024

Some changes occurred in diagnostic error codes

cc @GuillaumeGomez

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@rustbot ready

  • A test stderr is reverted
  • Error code document is updated
  • The ref book PR is ready

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Sep 11, 2024
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 25, 2024
…iaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang#129687 (Implement RFC3137 trim-paths sysroot changes - take 2)
 - rust-lang#129759 (Stabilize `const_refs_to_static`)
 - rust-lang#130329 (Reorder stack spills so that constants come later.)
 - rust-lang#130845 (Utf8Chunks: add link to Utf8Chunk)
 - rust-lang#130846 (Revert Break into the debugger on panic (129019))

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`@rustbot` modify labels: rollup
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@bors r-

It looks like there might be a couple more tests that need blessing, #130854 (comment)

@bors bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Sep 26, 2024
update tests

fix bitwidth-sensitive stderr output

use build-fail for asm tests
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dingxiangfei2009 commented Sep 26, 2024

@rustbot ready

  • I borrowed a proper AArch64 hardware to update the test fixture. 😓 I will review my emulation setup next time.

cc @traviscross

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Sep 26, 2024
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@bors r+ rollup=iffy

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bors commented Sep 26, 2024

📌 Commit 1576a6d has been approved by RalfJung

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 Sep 26, 2024
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bors commented Sep 26, 2024

⌛ Testing commit 1576a6d with merge 4428a05...

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bors commented Sep 26, 2024

☀️ Test successful - checks-actions
Approved by: RalfJung
Pushing 4428a05 to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Sep 26, 2024
@bors bors merged commit 4428a05 into rust-lang:master Sep 26, 2024
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@rustbot rustbot added this to the 1.83.0 milestone Sep 26, 2024
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Finished benchmarking commit (4428a05): comparison URL.

Overall result: ❌ regressions - 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)
1.5% [1.5%, 1.5%] 1
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) - - 0

Max RSS (memory usage)

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

Cycles

Results (primary -3.0%, secondary 6.2%)

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)
6.2% [6.2%, 6.2%] 1
Improvements ✅
(primary)
-3.0% [-9.6%, -1.2%] 11
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) -3.0% [-9.6%, -1.2%] 11

Binary size

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

Bootstrap: 773.662s -> 772.536s (-0.15%)
Artifact size: 340.89 MiB -> 340.88 MiB (-0.00%)

@traviscross traviscross added the relnotes Marks issues that should be documented in the release notes of the next release. label Sep 26, 2024
@workingjubilee workingjubilee added the F-const_refs_to_static `#![feature(const_refs_to_static)]` label Sep 27, 2024
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 30, 2024
make type-check-4 asm tests about non-const expressions

These tests recently got changed in rust-lang#129759. I asked the PR author to make the tests read from a `static mut` (rather than just making them "pass"), but I now think that was a mistake: previously the tests failed because the const was not a valid const expression, after the PR they failed because the const failed to evaluate.

So this PR restores the tests to "fail because the const is not a valid const expression". That can be done in a target-independent way so I unified the x86 and aarch64 tests into one.

Cc `@oli-obk` as the original [author](rust-lang@0d88631) of these tests -- not sure if you still remember what they were intended to test.
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Sep 30, 2024
make type-check-4 asm tests about non-const expressions

These tests recently got changed in rust-lang#129759. I asked the PR author to make the tests read from a `static mut` (rather than just making them "pass"), but I now think that was a mistake: previously the tests failed because the const was not a valid const expression, after the PR they failed because the const failed to evaluate.

So this PR restores the tests to "fail because the const is not a valid const expression". That can be done in a target-independent way so I unified the x86 and aarch64 tests into one.

Cc `@oli-obk` as the original [author](rust-lang@0d88631) of these tests -- not sure if you still remember what they were intended to test.
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Sep 30, 2024
Rollup merge of rust-lang#130895 - RalfJung:asm-tests, r=nnethercote

make type-check-4 asm tests about non-const expressions

These tests recently got changed in rust-lang#129759. I asked the PR author to make the tests read from a `static mut` (rather than just making them "pass"), but I now think that was a mistake: previously the tests failed because the const was not a valid const expression, after the PR they failed because the const failed to evaluate.

So this PR restores the tests to "fail because the const is not a valid const expression". That can be done in a target-independent way so I unified the x86 and aarch64 tests into one.

Cc `@oli-obk` as the original [author](rust-lang@0d88631) of these tests -- not sure if you still remember what they were intended to test.
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A-testsuite Area: The testsuite used to check the correctness of rustc F-const_refs_to_static `#![feature(const_refs_to_static)]` merged-by-bors This PR was explicitly merged by bors. relnotes Marks issues that should be documented in the release notes of the next release. S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Proposal: stabilize const_refs_to_static
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