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2025-02-10Fix imports, remove attrs for unused_*Michael Goulet-4/+2
2025-02-10Stop using span hack for contracts feature gatingMichael Goulet-12/+9
2025-02-09move repr(transparent) checks to coherenceDing Xiang Fei-10/+0
2025-02-09rename the trait to validity and place a feature gate afrontDing Xiang Fei-2/+2
2025-02-09introduce CoercePointeeWellformed for coherence checks at typeck stageDing Xiang Fei-9/+55
2025-02-08Rustfmtbjorn3-148/+199
2025-02-06Auto merge of #136471 - safinaskar:parallel, r=SparrowLiibors-2/+2
tree-wide: parallel: Fully removed all `Lrc`, replaced with `Arc` tree-wide: parallel: Fully removed all `Lrc`, replaced with `Arc` This is continuation of https://github.com/rust-lang/rust/pull/132282 . I'm pretty sure I did everything right. In particular, I searched all occurrences of `Lrc` in submodules and made sure that they don't need replacement. There are other possibilities, through. We can define `enum Lrc<T> { Rc(Rc<T>), Arc(Arc<T>) }`. Or we can make `Lrc` a union and on every clone we can read from special thread-local variable. Or we can add a generic parameter to `Lrc` and, yes, this parameter will be everywhere across all codebase. So, if you think we should take some alternative approach, then don't merge this PR. But if it is decided to stick with `Arc`, then, please, merge. cc "Parallel Rustc Front-end" ( https://github.com/rust-lang/rust/issues/113349 ) r? SparrowLii `@rustbot` label WG-compiler-parallel
2025-02-03Rename rustc_contract to contractCelina G. Val-3/+3
This has now been approved as a language feature and no longer needs a `rustc_` prefix. Also change the `contracts` feature to be marked as incomplete and `contracts_internals` as internal.
2025-02-03Refactor contract builtin macro + error handlingCelina G. Val-71/+71
Instead of parsing the different components of a function signature, eagerly look for either the `where` keyword or the function body. - Also address feedback to use `From` instead of `TryFrom` in cranelift contract and ubcheck codegen.
2025-02-03Separate contract feature gates for the internal machineryFelix S. Klock II-8/+12
The extended syntax for function signature that includes contract clauses should never be user exposed versus the interface we want to ship externally eventually.
2025-02-03Desugars contract into the internal AST extensionsFelix S. Klock II-0/+177
Check ensures on early return due to Try / Yeet Expand these two expressions to include a call to contract checking
2025-02-03Express contracts as part of function header and lower it to the contract ↵Celina G. Val-0/+4
lang items includes post-developed commit: do not suggest internal-only keywords as corrections to parse failures. includes post-developed commit: removed tabs that creeped in into rustfmt tool source code. includes post-developed commit, placating rustfmt self dogfooding. includes post-developed commit: add backquotes to prevent markdown checking from trying to treat an attr as a markdown hyperlink/ includes post-developed commit: fix lowering to keep contracts from being erroneously inherited by nested bodies (like closures). Rebase Conflicts: - compiler/rustc_parse/src/parser/diagnostics.rs - compiler/rustc_parse/src/parser/item.rs - compiler/rustc_span/src/hygiene.rs Remove contracts keywords from diagnostic messages
2025-02-03tree-wide: parallel: Fully removed all `Lrc`, replaced with `Arc`Askar Safin-2/+2
2025-02-02Rollup merge of #134272 - RalfJung:destabilize-rustc_encodable_decodable, ↵Matthias Krüger-525/+10
r=oli-obk Remove rustc_encodable_decodable feature This has been shown in future-compat reports since Rust 1.79 (https://github.com/rust-lang/rust/pull/116016), released June 2024. Let's see if crater still finds any issues. Part of https://github.com/rust-lang/rust/issues/134301. Cc ``@rust-lang/libs-api``
2025-01-31Make comma separated lists of anything easier to make for errorsEsteban Küber-10/+8
Provide a new function `listify`, meant to be used in cases similar to `pluralize!`. When you have a slice of arbitrary elements that need to be presented to the user, `listify` allows you to turn that into a list of comma separated strings. This reduces a lot of redundant logic that happens often in diagnostics.
2025-01-30Rollup merge of #135882 - hkBst:master, r=estebankMatthias Krüger-8/+7
simplify `similar_tokens` from `Option<Vec<_>>` to `&[_]` All uses immediately invoke contains, so maybe a further simplification is possible.
2025-01-28parse_format optimize import useMarijn Schouten-2/+2
2025-01-27Remove redundant to_ident_string callsMichael Goulet-2/+2
2025-01-23simplify similar_tokens from Option<Vec<_>> to Vec<_>Marijn Schouten-8/+7
2025-01-22Rollup merge of #135557 - estebank:wtf8, r=fee1-deadMatthias Krüger-5/+7
Point at invalid utf-8 span on user's source code ``` error: couldn't read `$DIR/not-utf8-bin-file.rs`: stream did not contain valid UTF-8 --> $DIR/not-utf8-2.rs:6:5 | LL | include!("not-utf8-bin-file.rs"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: byte `193` is not valid utf-8 --> $DIR/not-utf8-bin-file.rs:2:14 | LL | let _ = "�|�␂!5�cc␕␂��"; | ^ = note: this error originates in the macro `include` (in Nightly builds, run with -Z macro-backtrace for more info) ``` When we attempt to load a Rust source code file, if there is a OS file failure we try reading the file as bytes. If that succeeds we try to turn it into UTF-8. If *that* fails, we provide additional context about *where* the file has the first invalid UTF-8 character. Fix #76869.
2025-01-22Point at invalid utf-8 span on user's source codeEsteban Küber-5/+7
``` error: couldn't read `$DIR/not-utf8-bin-file.rs`: stream did not contain valid UTF-8 --> $DIR/not-utf8-2.rs:6:5 | LL | include!("not-utf8-bin-file.rs"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: `[193]` is not valid utf-8 --> $DIR/not-utf8-bin-file.rs:2:14 | LL | let _ = "�|�␂!5�cc␕␂��"; | ^ = note: this error originates in the macro `include` (in Nightly builds, run with -Z macro-backtrace for more info) ``` When we attempt to load a Rust source code file, if there is a OS file failure we try reading the file as bytes. If that succeeds we try to turn it into UTF-8. If *that* fails, we provide additional context about *where* the file has the first invalid UTF-8 character. Fix #76869.
2025-01-21remove support for the #[start] attributeRalf Jung-4/+3
2025-01-14remove Rustc{En,De}codable from library and compilerRalf Jung-525/+10
2025-01-01Rollup merge of #134877 - DavisRayM:129966-format-string-help-message, ↵Stuart Cook-0/+18
r=estebank add suggestion for wrongly ordered format parameters Add suggestion for wrongly ordered format parameters like `?#`. Supersedes #131004 Fix #129966
2024-12-31Account for format_args in HiddenUnicodeCodepoints lintMichael Goulet-2/+18
2024-12-31Make parsed string literal fields namedMichael Goulet-9/+23
2024-12-30add suggestion for wrongly ordered format parametersDavis Muro-0/+18
2024-12-21Use E0665 for missing `#[default]` errorEsteban Küber-13/+13
Use orphaned error code for the same error it belonged to before. ``` error[E0665]: `#[derive(Default)]` on enum with no `#[default]` --> $DIR/macros-nonfatal-errors.rs:42:10 | LL | #[derive(Default)] | ^^^^^^^ LL | / enum NoDeclaredDefault { LL | | Foo, LL | | Bar, LL | | } | |_- this enum needs a unit variant marked with `#[default]` | = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info) help: make this unit variant default by placing `#[default]` on it | LL | #[default] Foo, | ~~~~~~~~~~~~~~ help: make this unit variant default by placing `#[default]` on it | LL | #[default] Bar, | ~~~~~~~~~~~~~~ ```
2024-12-19Speed up `Parser::expected_token_types`.Nicholas Nethercote-67/+71
The parser pushes a `TokenType` to `Parser::expected_token_types` on every call to the various `check`/`eat` methods, and clears it on every call to `bump`. Some of those `TokenType` values are full tokens that require cloning and dropping. This is a *lot* of work for something that is only used in error messages and it accounts for a significant fraction of parsing execution time. This commit overhauls `TokenType` so that `Parser::expected_token_types` can be implemented as a bitset. This requires changing `TokenType` to a C-style parameterless enum, and adding `TokenTypeSet` which uses a `u128` for the bits. (The new `TokenType` has 105 variants.) The new types `ExpTokenPair` and `ExpKeywordPair` are now arguments to the `check`/`eat` methods. This is for maximum speed. The elements in the pairs are always statically known; e.g. a `token::BinOp(token::Star)` is always paired with a `TokenType::Star`. So we now compute `TokenType`s in advance and pass them in to `check`/`eat` rather than the current approach of constructing them on insertion into `expected_token_types`. Values of these pair types can be produced by the new `exp!` macro, which is used at every `check`/`eat` call site. The macro is for convenience, allowing any pair to be generated from a single identifier. The ident/keyword filtering in `expected_one_of_not_found` is no longer necessary. It was there to account for some sloppiness in `TokenKind`/`TokenType` comparisons. The existing `TokenType` is moved to a new file `token_type.rs`, and all its new infrastructure is added to that file. There is more boilerplate code than I would like, but I can't see how to make it shorter.
2024-12-19Rename `Parser::expected_tokens` as `Parser::expected_token_types`.Nicholas Nethercote-1/+1
Because the `Token` type is similar to but different to the `TokenType` type, and the difference is important, so we want to avoid confusion.
2024-12-18Rollup merge of #134161 - nnethercote:overhaul-token-cursors, r=spastorino许杰友 Jieyou Xu (Joe)-4/+4
Overhaul token cursors Some nice cleanups here. r? `````@davidtwco`````
2024-12-18Re-export more `rustc_span::symbol` things from `rustc_span`.Nicholas Nethercote-71/+37
`rustc_span::symbol` defines some things that are re-exported from `rustc_span`, such as `Symbol` and `sym`. But it doesn't re-export some closely related things such as `Ident` and `kw`. So you can do `use rustc_span::{Symbol, sym}` but you have to do `use rustc_span::symbol::{Ident, kw}`, which is inconsistent for no good reason. This commit re-exports `Ident`, `kw`, and `MacroRulesNormalizedIdent`, and changes many `rustc_span::symbol::` qualifiers in `compiler/` to `rustc_span::`. This is a 200+ net line of code reduction, mostly because many files with two `use rustc_span` items can be reduced to one.
2024-12-18Rename `RefTokenTreeCursor`.Nicholas Nethercote-4/+4
Because `TokenStreamIter` is a much better name for a `TokenStream` iterator. Also rename the `TokenStream::trees` method as `TokenStream::iter`, and some local variables.
2024-12-16rename rustc_attr to rustc_attr_parsing and create rustc_attr_data_structuresJonathan Dönszelmann-3/+3
2024-12-13Rollup merge of #134140 - compiler-errors:unsafe-binders-ast, r=oli-obkMatthias Krüger-1/+2
Add AST support for unsafe binders I'm splitting up #130514 into pieces. It's impossible for me to keep up with a huge PR like that. I'll land type system support for this next, probably w/o MIR lowering, which will come later. r? `@oli-obk` cc `@BoxyUwU` and `@lcnr` who also may want to look at this, though this PR doesn't do too much yet
2024-12-12Add unwrap_unsafe_binder and wrap_unsafe_binder macro operatorsMichael Goulet-1/+2
2024-12-10Keep track of parse errors in `mod`s and don't emit resolve errors for paths ↵Esteban Küber-2/+4
involving them When we expand a `mod foo;` and parse `foo.rs`, we now track whether that file had an unrecovered parse error that reached the end of the file. If so, we keep that information around. When resolving a path like `foo::bar`, we do not emit any errors for "`bar` not found in `foo`", as we know that the parse error might have caused `bar` to not be parsed and accounted for. When this happens in an existing project, every path referencing `foo` would be an irrelevant compile error. Instead, we now skip emitting anything until `foo.rs` is fixed. Tellingly enough, we didn't have any test for errors caused by `mod` expansion. Fix #97734.
2024-12-09Disallow `#[default] Variant {}` regardless of feature flagEsteban Küber-2/+15
2024-12-09Introduce `default_field_values` featureEsteban Küber-16/+61
Initial implementation of `#[feature(default_field_values]`, proposed in https://github.com/rust-lang/rfcs/pull/3681. Support default fields in enum struct variant Allow default values in an enum struct variant definition: ```rust pub enum Bar { Foo { bar: S = S, baz: i32 = 42 + 3, } } ``` Allow using `..` without a base on an enum struct variant ```rust Bar::Foo { .. } ``` `#[derive(Default)]` doesn't account for these as it is still gating `#[default]` only being allowed on unit variants. Support `#[derive(Default)]` on enum struct variants with all defaulted fields ```rust pub enum Bar { #[default] Foo { bar: S = S, baz: i32 = 42 + 3, } } ``` Check for missing fields in typeck instead of mir_build. Expand test with `const` param case (needs `generic_const_exprs` enabled). Properly instantiate MIR const The following works: ```rust struct S<A> { a: Vec<A> = Vec::new(), } S::<i32> { .. } ``` Add lint for default fields that will always fail const-eval We *allow* this to happen for API writers that might want to rely on users' getting a compile error when using the default field, different to the error that they would get when the field isn't default. We could change this to *always* error instead of being a lint, if we wanted. This will *not* catch errors for partially evaluated consts, like when the expression relies on a const parameter. Suggestions when encountering `Foo { .. }` without `#[feature(default_field_values)]`: - Suggest adding a base expression if there are missing fields. - Suggest enabling the feature if all the missing fields have optional values. - Suggest removing `..` if there are no missing fields.
2024-12-04make CoercePointee errors translatableDing Xiang Fei-41/+56
2024-11-27update cfgsBoxy-1/+1
2024-11-26Auto merge of #132894 - frank-king:feature/where-refactor, r=cjgillotbors-34/+19
Refactor `where` predicates, and reserve for attributes support Refactor `WherePredicate` to `WherePredicateKind`, and reserve for attributes support in `where` predicates. This is a part of #115590 and is split from #132388. r? petrochenkov
2024-11-25Refactor `where` predicates, and reserve for attributes supportFrank King-34/+19
2024-11-24Support use of asm goto with outputs and `options(noreturn)`Gary Guo-1/+4
When labels are present, the `noreturn` option really means that asm block won't fallthrough -- if labels are present, then outputs can still be meaningfully used.
2024-11-20Use visit_item instead of flat_map_item in test_harness.rsmaxcabrajac-31/+21
2024-11-20Itemsmaxcabrajac-1/+1
2024-11-16Rollup merge of #132787 - maxcabrajac:fnctxt, r=petrochenkovMatthias Krüger-3/+11
Unify FnKind between AST visitors and make WalkItemKind more straight forward Unifying `FnKind` requires a bunch of changes to `WalkItemKind::walk` signature so I'll change them in one go related to #128974 r? `@petrochenkov`
2024-11-15Add WalkItemKind::Ctxt so AssocCtxt is not sent to non-Assoc ItemKindsmaxcabrajac-4/+4
2024-11-15Make Visitor::FnKind and MutVisitor::FnKind compatiblemaxcabrajac-2/+10
2024-11-14Remove unreachable code in `has_cfg_or_cfg_attr`.Nicholas Nethercote-8/+1