Rollup of 7 pull requests #99816
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Rollup of 7 pull requests #99816
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Add a brief comment explaining why the diagnostic migration lints aren't included in the `rustc::internal` diagnostic group. Signed-off-by: David Wood <david.wood@huawei.com>
Signed-off-by: Yuki Okushi <jtitor@2k36.org>
If an internal lint uses `typeck_results` or similar queries then that can result in rustdoc checking code that it shouldn't (e.g. from other platforms) and emit compilation errors. Signed-off-by: David Wood <david.wood@huawei.com>
Some command-line options accessible through `sess.opts` are best accessed through wrapper functions on `Session`, `TyCtxt` or otherwise, rather than through field access on the option struct in the `Session`. Adds a new lint which triggers on those options that should be accessed through a wrapper function so that this is prohibited. Options are annotated with a new attribute `rustc_lint_opt_deny_field_access` which can specify the error message (i.e. "use this other function instead") to be emitted. A simpler alternative would be to simply rename the options in the option type so that it is clear they should not be used, however this doesn't prevent uses, just discourages them. Another alternative would be to make the option fields private, and adding accessor functions on the option types, however the wrapper functions sometimes rely on additional state from `Session` or `TyCtxt` which wouldn't be available in an function on the option type, so the accessor would simply make the field available and its use would be discouraged too. Signed-off-by: David Wood <david.wood@huawei.com>
Fix slice::ChunksMut aliasing Fixes rust-lang#94231, details in that issue. cc `@RalfJung` This isn't done just yet, all the safety comments are placeholders. But otherwise, it seems to work. I don't really like this approach though. There's a lot of unsafe code where there wasn't before, but as far as I can tell the only other way to uphold the aliasing requirement imposed by `__iterator_get_unchecked` is to use raw slices, which I think require the same amount of unsafe code. All that would do is tie the `len` and `ptr` fields together. Oh I just looked and I'm pretty sure that `ChunksExactMut`, `RChunksMut`, and `RChunksExactMut` also need to be patched. Even more reason to put up a draft.
Allow `ValTree::try_to_raw_bytes` on `u8` array Fixes rust-lang#99325 cc `@b-naber` I think who touched this last in 705d818
…onst-generics, r=oli-obk
Deeply deny fn and raw ptrs in const generics
I think this is right -- just because we wrap a fn ptr in a wrapper type does not mean we should allow it in a const parameter.
We now reject both of these in the same way:
```
#![feature(adt_const_params)]
#[derive(Eq, PartialEq)]
struct Wrapper();
fn foo<const W: Wrapper>() {}
fn foo2<const F: fn()>() {}
```
This does regress one test (`src/test/ui/consts/refs_check_const_eq-issue-88384.stderr`), but I'm not sure it should've passed in the first place.
cc: ``@b-naber`` who introduced that test^
fixes rust-lang#99641
lint: add bad opt access internal lint Prompted by [Zulip discussion](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/sess.2Ecrate_types.28.29.20vs.20sess.2Eopts.2Ecrate_types/near/290682847). Some command-line options accessible through `sess.opts` are best accessed through wrapper functions on `Session`, `TyCtxt` or otherwise, rather than through field access on the option struct in the `Session`. Adds a new lint which triggers on those options that should be accessed through a wrapper function so that this is prohibited. Options are annotated with a new attribute `rustc_lint_opt_deny_field_access` which can specify the error message (i.e. "use this other function instead") to be emitted. A simpler alternative would be to simply rename the options in the option type so that it is clear they should not be used, however this doesn't prevent uses, just discourages them. Another alternative would be to make the option fields private, and adding accessor functions on the option types, however the wrapper functions sometimes rely on additional state from `Session` or `TyCtxt` which wouldn't be available in an function on the option type, so the accessor would simply make the field available and its use would be discouraged too. **Leave a comment if there's an option I should add this to.**
…rk-Simulacrum Add some comments to the docs issue template to clarify Newcomers may not know that some docs have their own repositories (e.g. the book, the reference), or that the documentation and rustdoc are different. Actually, this template was used to report an issue related to the book: rust-lang#99699 This adds some comments to clarify the above things. I'm not sure if the current wording is the best, any suggestion would be helpful! Signed-off-by: Yuki Okushi <jtitor@2k36.org>
…r=petrochenkov Clean up HIR-based lifetime resolution Based on rust-lang#97313. Fixes rust-lang#98932. r? `@petrochenkov`
… r=jsha,notriddle Fix headings colors Fixes rust-lang#99797.  cc `@jsha` r? `@notriddle`
rustbot
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@bors r+ rollup=never p=5 |
bors
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☀️ Test successful - checks-actions |
This was referenced Jul 27, 2022
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Finished benchmarking commit (2643b16): comparison url. Instruction count
Max RSS (memory usage)Results
CyclesResults
If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf. @rustbot label: -perf-regression Footnotes |
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Successful merges:
ValTree::try_to_raw_bytesonu8array #99358 (AllowValTree::try_to_raw_bytesonu8array)Failed merges:
r? @ghost
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