Improve memory ordering diagnostics#97389
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r? @nagisa (rust-highfive has picked a reviewer for you, use r? to override) |
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This is quite awesome and is something I encountered recently as well! Unfortunately don't have capacity to review rustc PRs right now. r? @estebank |
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Left a couple of nitpicks, but otherwise LGTM.
Co-authored-by: Esteban Kuber <estebank@users.noreply.github.com>
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🌲 The tree is currently closed for pull requests below priority 1000. This pull request will be tested once the tree is reopened. |
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…askrgr Rollup of 5 pull requests Successful merges: - rust-lang#97389 (Improve memory ordering diagnostics) - rust-lang#97780 (Check ADT field is well-formed before checking it is sized) - rust-lang#98530 (compiletest: add issue number param to `known-bug`) - rust-lang#98556 (Fix builds on Windows (closes rust-lang#98546)) - rust-lang#98561 (Fix spelling in SAFETY comment) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Before:
After:
Before this change, the compiler suggests the failure ordering is too strong and suggests choosing a weaker ordering. After this change, it instead suggests the success ordering is not strong enough, and suggests chosing a stronger one. This is more likely to be correct.
Also, before this change, the compiler suggested downgrading an invalid AcqRel failure ordering to Relaxed, without mentioning Acquire as an option.