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Delegation: fix ICE on `bound_vars` divergence
Fixes https://github.com/rust-lang/rust/issues/122550.
Bug was caused by divergence between lowered type and corresponding `bound_vars` in `late_bound_vars_map`. In this patch `bound_vars` calculation for delegation item is moved from `lower_fn_ty` to `resolve_bound_vars` query.
r? `@petrochenkov`
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Split from the main renaming commit to make git generate a proper diff for ease of reviewing.
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Most of the tracing calls didn't fully leverage the power of `tracing`.
For example, several of them used to hard-code method names / tracing spans
as well as variable names. Use `#[instrument]` and `?var` / `%var` (etc.) instead.
In my opinion, this is the proper way to migrate them from the old
AstConv nomenclature to the new HIR ty lowering one.
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Several (doc) comments were super outdated or didn't provide enough context.
Some doc comments shoved everything in a single paragraph without respecting
the fact that the first paragraph should be a single sentence because rustdoc
treats these as item descriptions / synopses on module pages.
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This includes updating astconv-related items and a few local variables.
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Replace closures with `_` when suggesting fully qualified path for method call
```
error[E0283]: type annotations needed
--> $DIR/into-inference-needs-type.rs:12:10
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LL | .into()?;
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= note: cannot satisfy `_: From<...>`
= note: required for `FilterMap<...>` to implement `Into<_>`
help: try using a fully qualified path to specify the expected types
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LL ~ let list = <FilterMap<Map<std::slice::Iter<'_, &str>, _>, _> as Into<T>>::into(vec
LL | .iter()
LL | .map(|s| s.strip_prefix("t"))
LL ~ .filter_map(Option::Some))?;
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```
Fix #122569.
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```
error[E0283]: type annotations needed
--> $DIR/into-inference-needs-type.rs:12:10
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LL | .into()?;
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= note: cannot satisfy `_: From<...>`
= note: required for `FilterMap<...>` to implement `Into<_>`
help: try using a fully qualified path to specify the expected types
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LL ~ let list = <FilterMap<Map<std::slice::Iter<'_, &str>, _>, _> as Into<T>>::into(vec
LL | .iter()
LL | .map(|s| s.strip_prefix("t"))
LL ~ .filter_map(Option::Some))?;
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```
Fix #122569.
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Ensure nested statics have a HIR node to prevent various queries from ICEing
fixes https://github.com/rust-lang/miri/issues/3389
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other hir nodes that were fed
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There already were inconsistencies, so this ensures we don't introduce subtle surprising bugs
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hir: Remove `opt_local_def_id_to_hir_id` and `opt_hir_node_by_def_id`
Also replace a few `hir_node()` calls with `hir_node_by_def_id()`.
Follow up to https://github.com/rust-lang/rust/pull/120943.
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Clean up AstConv
Split off from #120926 to make it only contain the renaming & (doc) comment updates.
Any changes other than that which have accumulated over time are now part of this PR.
Let's be disciplined ;) Inspired by https://github.com/rust-lang/rust/pull/120926#issuecomment-1997984483.
---
* Remove `hir_trait_to_predicates`
* Unused since #113671
* Inline `create_args_for_ast_trait_ref`
* Only had a single call site
* Having it as a separate method didn't gain us anything
* Use an if-let guard somewhere to avoid unwrapping
* Avoid explicit trait object lifetimes
* More legible, stylistic-only (the updated code is 100% semantically identical)
* Use explicitly elided lifetimes in impl headers, they get elaborated to distinct lifetimes
* Make use of [object lifetime defaulting](https://doc.rust-lang.org/reference/lifetime-elision.html#default-trait-object-lifetimes) for a trait object type inside of a reference type somewhere
* Use preexisting dedicated method `ItemCtxt::to_ty` over `<dyn AstConv<'_>>::ast_ty_to_ty`
* Use preexisting dedicated method `AstConv::astconv` over explicit coercions
* Simplify the function signature of `create_args_for_ast_path` and of `check_generic_arg_count`
* In both cases redundant information was passed rendering the call sites verbose and confusing
* No perf impact (tested in [#120926](https://github.com/rust-lang/rust/pull/120926))
* Move diagnostic method `report_ambiguous_associated_type` from `astconv` to `astconv::errors`
* The submodule `errors` exists specifically for that purpose
* Use it to keep the main module clean & short
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Also replace a few `hir_node()` calls with `hir_node_by_def_id()`
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Create some minimal HIR for associated opaque types
`LocalDefId`s for opaque types in traits and impls are created after AST -> HIR lowering, so they don't have corresponding HIR and return their various properties through fed queries.
In this PR I also feed some core HIR-related queries for these `LocalDefId`s (which happen to be HIR owners).
As a result all `LocalDefId`s now have corresponding `HirId`s and HIR nodes, and "optional" methods like `opt_local_def_id_to_hir_id` and `opt_hir_node_by_def_id` can be removed.
Follow up to https://github.com/rust-lang/rust/pull/120206.
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This reverts commit 65cd843ae06ad00123c131a431ed5304e4cd577a, reversing
changes made to d255c6a57c393db6221b1ff700daea478436f1cd.
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Rollup of 15 pull requests
Successful merges:
- #116791 (Allow codegen backends to opt-out of parallel codegen)
- #116793 (Allow targets to override default codegen backend)
- #117458 (LLVM Bitcode Linker: A self contained linker for nvptx and other targets)
- #119385 (Fix type resolution of associated const equality bounds (take 2))
- #121438 (std support for wasm32 panic=unwind)
- #121893 (Add tests (and a bit of cleanup) for interior mut handling in promotion and const-checking)
- #122080 (Clarity improvements to `DropTree`)
- #122152 (Improve diagnostics for parenthesized type arguments)
- #122166 (Remove the unused `field_remapping` field from `TypeLowering`)
- #122249 (interpret: do not call machine read hooks during validation)
- #122299 (Store backtrace for `must_produce_diag`)
- #122318 (Revision-related tweaks for next-solver tests)
- #122320 (Use ptradd for vtable indexing)
- #122328 (unix_sigpipe: Replace `inherit` with `sig_dfl` in syntax tests)
- #122330 (bootstrap readme: fix, improve, update)
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix type resolution of associated const equality bounds (take 2)
Instead of trying to re-resolve the type of assoc const bindings inside the `type_of` query impl in an incomplete manner, transfer the already (correctly) resolved type from `add_predicates_for_ast_type_binding` to `type_of`/`anon_type_of` through query feeding.
---
Together with #118668 (merged) and #121258, this supersedes #118360.
Fixes #118040.
r? ``@ghost``
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Better comment for implicit captures in RPITIT
Improve the error message for implicit captures. Also always set E0657.
r? oli-obk
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Use `ControlFlow` in visitors.
Follow up to #121256
This does have a few small behaviour changes in some diagnostic output where the visitor will now find the first match rather than the last match. The change in `find_anon_types.rs` has the only affected test. I don't see this being an issue as the last occurrence isn't any better of a choice than the first.
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Uplift some feeding out of `associated_type_for_impl_trait_in_impl` and into queries
This PR moves the `type_of` and `generics_of` query feeding out of `associated_type_for_impl_trait_in_impl`, since eagerly feeding results in query cycles due to a subtle interaction with `resolve_bound_vars`.
Fixes #122019
r? spastorino
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Rollup of 8 pull requests
Successful merges:
- #121202 (Limit the number of names and values in check-cfg diagnostics)
- #121301 (errors: share `SilentEmitter` between rustc and rustfmt)
- #121658 (Hint user to update nightly on ICEs produced from outdated nightly)
- #121846 (only compare ambiguity item that have hard error)
- #121961 (add test for #78894 #71450)
- #121975 (hir_analysis: enums return `None` in `find_field`)
- #121978 (Fix duplicated path in the "not found dylib" error)
- #121991 (Merge impl_trait_in_assoc_types_defined_by query back into `opaque_types_defined_by`)
r? `@ghost`
`@rustbot` modify labels: rollup
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`opaque_types_defined_by`
Instead, when we're collecting opaques for associated items, we choose the right collection mode depending on whether we're collecting for an associated item of a trait impl or not.
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queries
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Stashed errors used to be counted as errors, but could then be
cancelled, leading to `ErrorGuaranteed` soundness holes. #120828 changed
that, closing the soundness hole. But it introduced other difficulties
because you sometimes have to account for pending stashed errors when
making decisions about whether errors have occured/will occur and it's
easy to overlook these.
This commit aims for a middle ground.
- Stashed errors (not warnings) are counted immediately as emitted
errors, avoiding the possibility of forgetting to consider them.
- The ability to cancel (or downgrade) stashed errors is eliminated, by
disallowing the use of `steal_diagnostic` with errors, and introducing
the more restrictive methods `try_steal_{modify,replace}_and_emit_err`
that can be used instead.
Other things:
- `DiagnosticBuilder::stash` and `DiagCtxt::stash_diagnostic` now both
return `Option<ErrorGuaranteed>`, which enables the removal of two
`delayed_bug` calls and one `Ty::new_error_with_message` call. This is
possible because we store error guarantees in
`DiagCtxt::stashed_diagnostics`.
- Storing the guarantees also saves us having to maintain a counter.
- Calls to the `stashed_err_count` method are no longer necessary
alongside calls to `has_errors`, which is a nice simplification, and
eliminates two more `span_delayed_bug` calls and one FIXME comment.
- Tests are added for three of the four fixed PRs mentioned below.
- `issue-121108.rs`'s output improved slightly, omitting a non-useful
error message.
Fixes #121451.
Fixes #121477.
Fixes #121504.
Fixes #121508.
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Much better!
Note that this involves renaming (and updating the value of)
`DIAGNOSTIC_BUILDER` in clippy.
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Fixes #121503.
Fixes #121597.
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Prevent cycle in implied predicates computation
Makes #65913 from hang -> fail. I believe fail is the correct state for this test to remain for the long term.
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Fix #121208 fallout
#121208 converted lots of delayed bugs to bugs. Unsurprisingly, there were a few invalid conversion found via fuzzing.
r? `@lcnr`
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Fixes #121410.
Fixes #121414.
Fixes #121418.
Fixes #121431.
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test that we do not support higher-ranked regions in opaque type inference
We already do all the right checks in `check_opaque_type_parameter_valid`, and we have done so since at least 2 years.
I collected the tests from https://github.com/rust-lang/rust/pull/116935 and https://github.com/rust-lang/rust/pull/100503 and added some more
cc https://github.com/rust-lang/rust/issues/96146
r? `@lcnr`
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