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Only prefer param-env candidates if they remain non-global after norm
Introduce `CandidateSource::GlobalParamEnv`, and dynamically compute the `CandidateSource` based on whether the predicate contains params *post-normalization*.
This code needs some cleanup and documentation. I'm just putting this up for review.
cc https://github.com/rust-lang/trait-system-refactor-initiative/issues/179
r? lcnr
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borrowck nested items in dead code
fixes https://github.com/rust-lang/rust/issues/140583
r? `@compiler-errors`
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Resolve instance for SymFn in global/naked asm
`Instance::expect_resolve` ensures that we're actually going from trait item -> impl item.
Fixes #140373
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Remove global `next_disambiguator` state and handle it with a `DisambiguatorState` type
This removes `Definitions.next_disambiguator` as it doesn't guarantee deterministic def paths when `create_def` is called in parallel. Instead a new `DisambiguatorState` type is passed as a mutable reference to `create_def` to help create unique def paths. `create_def` calls with distinct `DisambiguatorState` instances must ensure that that the def paths are unique without its help.
Anon associated types did rely on this global state for uniqueness and are changed to use (method they're defined in + their position in the method return type) as the `DefPathData` to ensure uniqueness. This also means that the method they're defined in appears in error messages, which is nicer.
`DefPathData::NestedStatic` is added to use for nested data inside statics instead of reusing `DefPathData::AnonConst` to avoid conflicts with those.
cc `@oli-obk`
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implement or-patterns for pattern types
These are necessary to represent `NonZeroI32`, as the range for that is `..0 | 1..`. The `rustc_scalar_layout_range_*` attributes avoided this by just implementing wraparound and having a single `1..=-1` range effectively. See https://rust-lang.zulipchat.com/#narrow/channel/481660-t-lang.2Fpattern-types/topic/.60or.20pattern.60.20representation.20in.20type.20system/with/504217694 for some background discussion
cc https://github.com/rust-lang/rust/issues/123646
r? `@BoxyUwU`
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`DisambiguatorState` type
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Rollup of 7 pull requests
Successful merges:
- #140056 (Fix a wrong error message in 2024 edition)
- #140220 (Fix detection of main function if there are expressions around it)
- #140249 (Remove `weak` alias terminology)
- #140316 (Introduce `BoxMarker` to improve pretty-printing correctness)
- #140347 (ci: clean more disk space in codebuild)
- #140349 (ci: use aws codebuild for the `dist-x86_64-linux` job)
- #140379 (rustc-dev-guide subtree update)
r? `@ghost`
`@rustbot` modify labels: rollup
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Remove `weak` alias terminology
I find the "weak" alias terminology to be quite confusing. It implies the existence of "strong" aliases (which do not exist) and I'm not really sure what about weak aliases is "weak". I much prefer "free alias" as the term. I think it's much more obvious what it means as "free function" is a well defined term that already exists in rust.
It's also a little confusing given "weak alias" is already a term in linker/codegen spaces which are part of the compiler too. Though I'm not particularly worried about that as it's usually very obvious if you're talking about the type system or not lol. I'm also currently trying to write documentation about aliases and it's somewhat awkward/confusing to be talking about *weak* aliases, when I'm not really sure what the basis for that as the term actually *is*.
I would also be happy to just find out there's a nice meaning behind calling them "weak" aliases :-)
r? `@oli-obk`
maybe we want a types MCP to decide on a specific naming here? or maybe we think its just too late to go back on this naming decision ^^'
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async_drop_in_place::{closure}, scoped async drop added.
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Make #![feature(let_chains)] bootstrap conditional in compiler/
Let chains have been stabilized recently in #132833, so we can remove the gating from our uses in the compiler (as the compiler uses edition 2024).
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mitigate MSVC alignment issue on x86-32
This implements mitigation for https://github.com/rust-lang/rust/issues/112480 by stopping to emit `align` attributes on loads and function arguments when building for a win32 MSVC target. MSVC is known to not properly align `u64` and similar types, and claiming to LLVM that everything is properly aligned increases the chance that this will cause problems.
Of course, the misalignment is still a bug, but we can't fix that bug, only MSVC can.
Also add an errata note to the platform support page warning users about this known problem.
try-job: `i686-msvc*`
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Overhaul `AssocItem`
`AssocItem` has multiple fields that only make sense some of the time. E.g. the `name` can be empty if it's an RPITIT associated type. It's clearer and less error prone if these fields are moved to the relevant `kind` variants.
r? ``@fee1-dead``
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To accurately reflect that RPITIT assoc items don't have a name. This
avoids the use of `kw::Empty` to mean "no name", which is error prone.
Helps with #137978.
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From `hir::AssocItem`.
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`hir::AssocItem` currently has a boolean `fn_has_self_parameter` field,
which is misplaced, because it's only relevant for associated fns, not
for associated consts or types. This commit moves it (and renames it) to
the `AssocKind::Fn` variant, where it belongs.
This requires introducing a new C-style enum, `AssocTag`, which is like
`AssocKind` but without the fields. This is because `AssocKind` values
are passed to various functions like `find_by_ident_and_kind` to
indicate what kind of associated item should be searched for, and having
to specify `has_self` isn't relevant there.
New methods:
- Predicates `AssocItem::is_fn` and `AssocItem::is_method`.
- `AssocItem::as_tag` which converts `AssocItem::kind` to `AssocTag`.
Removed `find_by_name_and_kinds`, which is unused.
`AssocItem::descr` can now distinguish between methods and associated
functions, which slightly improves some error messages.
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nnethercote:rm-Nonterminal-and-TokenKind-Interpolated, r=petrochenkov
Remove `Nonterminal` and `TokenKind::Interpolated`
A third attempt at this; the first attempt was #96724 and the second was #114647.
r? `@ghost`
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PR #137977 changed `DefPathData::TypeNs` to contain `Option<Symbol>` to
account for RPITIT assoc types being anonymous. This commit changes it
back to `Symbol` and gives anonymous assoc types their own variant. It
makes things a bit nicer overall.
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Rollup of 10 pull requests
Successful merges:
- #139494 (Restrict some queries by def-kind more)
- #139496 (Revert r-a changes of rust-lang/rust#139455)
- #139506 (add missing word in doc comment (part 2))
- #139515 (Improve presentation of closure signature mismatch from `Fn` trait goal)
- #139520 (compiletest maintenance: sort deps and drop dep on `anyhow`)
- #139523 (Rustc dev guide subtree update)
- #139526 (Fix deprecation note for std::intrinsics)
- #139528 (compiletest: Remove the `--logfile` flag)
- #139541 (Instantiate higher-ranked transmute goal w/ placeholders before emitting sub-obligations)
- #139547 (Update library tracking issue template to set S-tracking-unimplemented)
r? `@ghost`
`@rustbot` modify labels: rollup
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Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
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targets
also mention the MSVC alignment issue in platform-support.md
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These are no longer needed now that `Nonterminal` is gone.
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Rollup of 12 pull requests
Successful merges:
- #134076 (Stabilize `std::io::ErrorKind::InvalidFilename`)
- #137504 (Move methods from Map to TyCtxt, part 4.)
- #138175 (Support rmeta inputs for --crate-type=bin --emit=obj)
- #138259 (Disentangle `ForwardGenericParamBan` and `ConstParamTy` ribs)
- #138280 (fix ICE in pretty-printing `global_asm!`)
- #138318 (Rustdoc: remove a bunch of `@ts-expect-error` from main.js)
- #138331 (Use `RUSTC_LINT_FLAGS` more)
- #138357 (merge `TypeChecker` and `TypeVerifier`)
- #138394 (remove unnecessary variant)
- #138403 (Delegation: one more ICE fix for `MethodCall` generation)
- #138407 (Delegation: reject C-variadics)
- #138409 (Use sa_sigaction instead of sa_union.__su_sigaction for AIX)
r? `@ghost`
`@rustbot` modify labels: rollup
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Rollup of 7 pull requests
Successful merges:
- #137314 (change definitely unproductive cycles to error)
- #137701 (Convert `ShardedHashMap` to use `hashbrown::HashTable`)
- #138269 (uefi: fs: Implement FileType, FilePermissions and FileAttr)
- #138331 (Use `RUSTC_LINT_FLAGS` more)
- #138345 (Some autodiff cleanups)
- #138387 (intrinsics: remove unnecessary leading underscore from argument names)
- #138390 (fix incorrect tracing log)
r? `@ghost`
`@rustbot` modify labels: rollup
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remove unnecessary variant
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r=onur-ozkan,jieyouxu
Use `RUSTC_LINT_FLAGS` more
An alternative to the failed #138084.
Fixes #138106.
r? `````@jieyouxu`````
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Move methods from Map to TyCtxt, part 4.
A follow-up to https://github.com/rust-lang/rust/pull/137350.
r? ```@Zalathar```
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r=onur-ozkan,jieyouxu
Use `RUSTC_LINT_FLAGS` more
An alternative to the failed #138084.
Fixes #138106.
r? ````@jieyouxu````
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Remove `NtItem` and `NtStmt`
Another piece of #124141.
r? `@petrochenkov`
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Continuing the work from #137350.
Removes the unused methods: `expect_variant`, `expect_field`,
`expect_foreign_item`.
Every method gains a `hir_` prefix.
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To make room for the moving of `Map::attrs` to `TyCtxt::hir_attrs` in
the next commit. (It makes sense to rename the query, because it has
many fewer uses than the method.)
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Rollup of 10 pull requests
Successful merges:
- #137715 (Allow int literals for pattern types with int base types)
- #138002 (Disable CFI for weakly linked syscalls)
- #138051 (Add support for downloading GCC from CI)
- #138231 (Prevent ICE in autodiff validation by emitting user-friendly errors)
- #138245 (stabilize `ci_rustc_if_unchanged_logic` test for local environments)
- #138256 (Do not feed anon const a type that references generics that it does not have)
- #138284 (Do not write user type annotation for const param value path)
- #138296 (Remove `AdtFlags::IS_ANONYMOUS` and `Copy`/`Clone` condition for anonymous ADT)
- #138352 (miri native_calls: ensure we actually expose *mutable* provenance to the memory FFI can access)
- #138354 (remove redundant `body` arguments)
r? `@ghost`
`@rustbot` modify labels: rollup
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