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fix is_disaligned logic for nested packed structs #100064

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Merged
merged 1 commit into from
Aug 3, 2022
Merged

fix is_disaligned logic for nested packed structs #100064

merged 1 commit into from
Aug 3, 2022

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RalfJung
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@RalfJung RalfJung commented Aug 2, 2022

#83605 broke the is_disaligned logic by bailing out of the loop in is_within_packed early. This PR fixes that problem and adds suitable tests.

Fixes #99838

@rustbot rustbot added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Aug 2, 2022
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r? @petrochenkov

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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Aug 2, 2022
@RalfJung RalfJung mentioned this pull request Aug 2, 2022
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r=me after squashing commits.
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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 Aug 3, 2022
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RalfJung commented Aug 3, 2022

@bors r=petrochenkov p=1
let's get this soundness fix in before beta branches on Friday

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bors commented Aug 3, 2022

📌 Commit 9097ce9 has been approved by petrochenkov

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-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Aug 3, 2022
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bors commented Aug 3, 2022

⌛ Testing commit 9097ce9 with merge d6b96b6...

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bors commented Aug 3, 2022

☀️ Test successful - checks-actions
Approved by: petrochenkov
Pushing d6b96b6 to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Aug 3, 2022
@bors bors merged commit d6b96b6 into rust-lang:master Aug 3, 2022
@rustbot rustbot added this to the 1.64.0 milestone Aug 3, 2022
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Finished benchmarking commit (d6b96b6): comparison url.

Instruction count

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

Max RSS (memory usage)

Results
  • Primary benchmarks: no relevant changes found
  • Secondary benchmarks: 🎉 relevant improvement found
mean1 max count2
Regressions 😿
(primary)		 N/A N/A 0
Regressions 😿
(secondary)		 N/A N/A 0
Improvements 🎉
(primary)		 N/A N/A 0
Improvements 🎉
(secondary)		 -3.6% -3.6% 1
All 😿🎉 (primary) N/A N/A 0

Cycles

Results
  • Primary benchmarks: 😿 relevant regressions found
  • Secondary benchmarks: no relevant changes found
mean1 max count2
Regressions 😿
(primary)		 2.0% 2.1% 2
Regressions 😿
(secondary)		 N/A N/A 0
Improvements 🎉
(primary)		 N/A N/A 0
Improvements 🎉
(secondary)		 N/A N/A 0
All 😿🎉 (primary) 2.0% 2.1% 2

If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf.

@rustbot label: -perf-regression

Footnotes

  1. the arithmetic mean of the percent change ↩ ↩2

  2. number of relevant changes ↩ ↩2

@RalfJung RalfJung deleted the disaligned branch August 3, 2022 22:01
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@JakobDegen JakobDegen JakobDegen approved these changes

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@petrochenkov petrochenkov

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merged-by-bors This PR was explicitly merged by bors. S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Successfully merging this pull request may close these issues.

Misaligned reference from drop field in packed struct
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@RalfJung @rust-highfive @petrochenkov @bors @rust-timer @JakobDegen @rustbot