Rollup of 5 pull requests #124934
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Rollup of 5 pull requests #124934
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The starting point for this was identical comments on two different
fields, in `ast::VariantData::Struct` and `hir::VariantData::Struct`:
```
// FIXME: investigate making this a `Option<ErrorGuaranteed>`
recovered: bool
```
I tried that, and then found that I needed to add an `ErrorGuaranteed`
to `Recovered::Yes`. Then I ended up using `Recovered` instead of
`Option<ErrorGuaranteed>` for these two places and elsewhere, which
required moving `ErrorGuaranteed` from `rustc_parse` to `rustc_ast`.
This makes things more consistent, because `Recovered` is used in more
places, and there are fewer uses of `bool` and
`Option<ErrorGuaranteed>`. And safer, because it's difficult/impossible
to set `recovered` to `Recovered::Yes` without having emitted an error.
Make a minimal amount of region APIs public Tools like Creusot, Prusti or Gillian-Rust need to access information about the loans and regions that exist in MIR programs. While `rustc` provides information about loans, there is currently no public way to reason about the regions present in a MIR program. In particular, we to know which regions are actually equal to each other and which ones outlive each other. Currently, `rustc` provides access to `RegionInferenceContext` but the public api hides that last portion of the information. This PR proposes to make a few apis public, allowing verifiers to reason about the lifetimes present in Rust programs: - [eval_equal](https://doc.rust-lang.org/beta/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#method.eval_equal) - [eval_outlives](https://doc.rust-lang.org/beta/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#method.eval_outlives) - (Optional) [constraint_sccs](https://doc.rust-lang.org/beta/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#method.constraint_sccs) The first two functions would allow us to compare regions and from this we can construct the set of `RegionVid` which are actually equal to each other, and then recover the inclusions between those regions, while the second allows for more direct, but _low level_ access to that information.
…ranteed, r=compiler-errors
Add `ErrorGuaranteed` to `Recovered::Yes` and use it more.
The starting point for this was identical comments on two different fields, in `ast::VariantData::Struct` and `hir::VariantData::Struct`:
```
// FIXME: investigate making this a `Option<ErrorGuaranteed>`
recovered: bool
```
I tried that, and then found that I needed to add an `ErrorGuaranteed` to `Recovered::Yes`. Then I ended up using `Recovered` instead of `Option<ErrorGuaranteed>` for these two places and elsewhere, which required moving `ErrorGuaranteed` from `rustc_parse` to `rustc_ast`.
This makes things more consistent, because `Recovered` is used in more places, and there are fewer uses of `bool` and
`Option<ErrorGuaranteed>`. And safer, because it's difficult/impossible to set `recovered` to `Recovered::Yes` without having emitted an error.
r? `@oli-obk`
…piler-errors interpret/miri: better errors on failing offset_from Fixes rust-lang/miri#3104
chore: remove repetitive words
… r=est31 Make `#![feature]` suggestion MaybeIncorrect Fixes rust-lang/rust-clippy#12784 The `unstable_name_collisions` lint uses `disabled_nightly_features` to mention the feature name, but accepting the suggestion would result in an ambiguity error There are other calls where accepting the feature gate would fix code when ran with `cargo fix --broken-code`, though it's not always desirable to add a feature gate even if the user is currently on nightly so MaybeIncorrect seems appropriate
rustbot
added
S-waiting-on-review
|
@bors r+ rollup=never p=5 |
bors
added
S-waiting-on-bors
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☀️ Test successful - checks-actions |
|
📌 Perf builds for each rolled up PR:
previous master: 238c1e798d In the case of a perf regression, run the following command for each PR you suspect might be the cause: |
This was referenced May 9, 2024
Merged
|
Finished benchmarking commit (e6e262f): comparison URL. Overall result: no relevant changes - no action needed@rustbot label: -perf-regression Instruction countThis benchmark run did not return any relevant results for this metric. Max RSS (memory usage)ResultsThis 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.
CyclesThis benchmark run did not return any relevant results for this metric. Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 675.773s -> 673.66s (-0.31%) |
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Successful merges:
ErrorGuaranteedtoRecovered::Yesand use it more. #124919 (AddErrorGuaranteedtoRecovered::Yesand use it more.)#![feature]suggestion MaybeIncorrect #124926 (Make#![feature]suggestion MaybeIncorrect)r? @ghost
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