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param-env for receiver_is_dispatchable
(cherry picked from commit 4f2baaa9c6b75d4267eea9e1096339d56d380615)
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Rollup of 10 pull requests
Successful merges:
- #130883 (Add environment variable query)
- #138624 (Add mipsel maintainer)
- #138672 (Avoiding calling queries when collecting active queries)
- #138935 (Update wg-prio triagebot config)
- #138946 (Un-bury chapters from the chapter list in rustc book)
- #138964 (Implement lint against using Interner and InferCtxtLike in random compiler crates)
- #138977 (Don't deaggregate InvocationParent just to reaggregate it again)
- #138980 (Collect items referenced from var_debug_info)
- #138985 (Use the correct binder scope for elided lifetimes in assoc consts)
- #138987 (Always emit `native-static-libs` note, even if it is empty)
r? `@ghost`
`@rustbot` modify labels: rollup
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traits
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Do not register `Self: AutoTrait` when confirming auto trait (in old solver)
Every built-in auto impl for a trait goal like `Ty: Auto` immediately registers another obligation of `Ty: Auto` as one of its nested obligations, leading to us stressing the cycle detection machinery a lot more than we need to. This is because all traits have a `Self: Trait` predicate.
To fix this, remove the call to `impl_or_trait_obligations` in `vtable_auto_impl`, since auto traits do not have where clauses.
r? lcnr
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Elaborate trait assumption in `receiver_is_dispatchable`
Fixes #138172. See comment on the linked test.
Probably not a fix for the general problem, bc I think this may still be incomplete for other weird `where` clauses on the receiver. But 🤷, supertraits seems like an obvious one to fix.
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r=compiler-errors
compiler: Use `size_of` from the prelude instead of imported
Use `std::mem::{size_of, size_of_val, align_of, align_of_val}` from the prelude instead of importing or qualifying them. Apply this change across the compiler.
These functions were added to all preludes in Rust 1.80.
r? ``@compiler-errors``
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Turn order dependent trait objects future incompat warning into a hard error
fixes #56484
r? ``@ghost``
will FCP when we have a crater result
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Use `std::mem::{size_of, size_of_val, align_of, align_of_val}` from the
prelude instead of importing or qualifying them.
These functions were added to all preludes in Rust 1.80.
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Improve error message for `AsyncFn` trait failure for RPIT
Use a `WellFormedDerived` obligation cause to make sure we can turn an `AsyncFnKindHelper` trait goal into its parent `AsyncFn*` goal, then fix the logic for reporting `AsyncFn*` kind mismatches.
Best reviewed without whitespace.
Fixes #137905
r? oli-obk
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Remove unsizing coercions for tuples
See https://github.com/rust-lang/rust/issues/42877#issuecomment-2686010847 and below comments for justification.
Tracking issue: #42877
Fixes: #135217
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compiler-errors:no-implied-bounds-hack-unless-bevy, r=lcnr
Only use implied bounds hack if bevy, and use deeply normalize in implied bounds hack
Consolidates the implied bounds computation mode into a single function, which deeply normalizes, and if it's in **compat** mode (for bevy), it extracts outlives bounds from the infcx.
Previously, we were using the implied bounds compat mode in two cases:
1. During WF, if it detects `ParamSet`
2. EVERYWHERE ELSE (lol) -- e.g. borrowck, predicate entailment, etc.
While I think this is fine, and the net effect was just that we emitted fewer diagnostics, it makes me uncomfortable that all crates were using the supposed "compat" code.
Fixes #137767
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bounds hack
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When `#![feature(min_generic_const_args)]` is enabled, we now lower all
const paths in generic arg position to `hir::ConstArgKind::Path`. We
then lower assoc const paths to `ty::ConstKind::Unevaluated` since we
can no longer use the anon const expression lowering machinery. In the
process of implementing this, I factored out `hir_ty_lowering` code that
is now shared between lowering assoc types and assoc consts.
This PR also introduces a `#[type_const]` attribute for trait assoc
consts that are allowed as const args. However, we still need to
implement code to check that assoc const definitions satisfy
`#[type_const]` if present (basically is it a const path or a
monomorphic anon const).
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Update query normalizer docs to not position it as the greatest pioneer in the space of normalization
I don't think its true that we intend to replace all normalization with the query normalizer- its more likely that once the new solver is stable we can replace the query normalizer with normal normalization calls as the new solver caches much more than the old solver
r? ``@compiler-errors``
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Remove `ParamEnv::without_caller_bounds`
This doesn't really do anything that `ParamEnv::empty` doesn't do nowadays as `ParamEnv` *only* stores caller bounds since other information has been moved out into `TypingMode`
r? ```@compiler-errors``` ```@lcnr```
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Some `rustc_transmute` cleanups
A number of small things that can be removed.
r? ``@jswrenn``
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Use `Binder<Vec<Ty>>` instead of `Vec<Binder<Ty>>` in both solvers for sized/auto traits/etc.
It's more conceptually justified IMO, especially when binders get implications.
r? lcnr
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This was hiding some genuine sins, including unused arguments in
numerous functions/methods (incl. trait methods), and some unnecessary
computation.
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`TransmuteTypeEnv` only needs a `TyCtxt`, not an `InferCtxt`.
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In the standard library, the `Extend` impl for `Iterator` (specialised
with `TrustedLen`) has a parameter which is constrained by a projection
predicate. This projection predicate provides a value for an inference
variable but host effect evaluation wasn't resolving variables first.
Adding the extra resolve can the number of errors in some tests when they
gain host effect predicates, but this is not unexpected as calls to
`resolve_vars_if_possible` can cause more error tainting to happen.
Co-authored-by: Boxy <rust@boxyuwu.dev>
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- Remove `Result` that couldn't be Err on valid compilation.
- Always compute errors on failure.
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HIR type checking no longer runs dropck, so we may get new errors when
we run it in borrowck. If this happens then rerun the query in a local
infcx and report errors for it.
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The end goal is to eliminate `Map` altogether.
I added a `hir_` prefix to all of them, that seemed simplest. The
exceptions are `module_items` which became `hir_module_free_items` because
there was already a `hir_module_items`, and `items` which became
`hir_free_items` for consistency with `hir_module_free_items`.
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Use the right binder for rebinding `PolyTraitRef`
Fixes #136940
I committed a slightly different test which still demonstrates the issue.
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Check whole `Unsize` predicate for escaping bound vars
Fixes #136799
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