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1821 commits

Author SHA1 Message Date
overlookmotel
caa57f1649 fix(transformer/class-properties): fix scope flags in static prop initializers (#7786) 
Code in static property initializers moves from inside the class to outside. If environment outside the class is not strict mode, then scopes within the initializer become sloppy mode. Update `ScopeFlags` for scopes in static prop initializers accordingly.

We're following Babel for now, but this isn't actually correct. The initializers should be wrapped in a strict mode IIFE to maintain their strict mode behavior. But at least semantic data is now correct for the output.
 2024-12-10 23:57:43 +00:00
overlookmotel
4a3bca8354 fix(semantic): fix identifying strict mode arrow functions (#7785) 
Semantic analysis was not marking an arrow function containing a `"use strict"` directive as `ScopeFlags::StrictMode`. Fix that.
 2024-12-10 23:57:42 +00:00
overlookmotel
4f1ab49440 test(transformer/class-properties): add output.js files to override fixtures (#7777) 
In two of the overridden text fixtures for class properties transform, there was no `output.js` file because what was overridden was just `options.json` and `update_fixtures.js` script then generated new output files using Babel with the new options.

That was fine, but doesn't work with #7771. So add `output.js` files to the these overrides too.
 2024-12-10 15:25:39 +00:00
Boshen
39b9c5d01b feat(linter)!: remove unmaintained security plugin (#7773) 2024-12-10 14:29:22 +00:00
Dunqing
19a8aa5238 test(transformer/class-properties): overrides optional-chain-related tests (#7749) 
These tests only variable names difference from Babel's output, which is caused by transforming order.
 2024-12-10 10:35:06 +00:00
Dunqing
9cacf64f1d refactor(transformer/class-properties): transform the remaining PrivateFieldExpression in ChainExpression first (#7763) 
We need to transform the inner PrivateFieldExpression so that the variable name matches Babel's output as closely as possible.
 2024-12-10 10:35:06 +00:00
overlookmotel
2e69720ba0 feat(transformer/class-properties): support private_fields_as_properties assumption (#7717) 
Support `private_fields_as_properties` assumption in class properties transform. This assumption is also enabled by the transform's `loose` option.

Optional chain (e.g. `this?.#prop`) is not yet implemented, but all other usages of private fields are supported. We'll handle optional chain in a follow-on PR.
 2024-12-10 02:28:31 +00:00
overlookmotel
e010b6a7a0 feat(transformer/logical-assignment-operators): no temp vars for literals (#7759) 
`TransformCtx::duplicate_expression` (introduced in #7754) don't create temp vars for literals. This produces more compact output for the logical assignment operators transform.

This diverges from Babel (it's better!) so add an override for one of Babel's fixtures. Also add further tests for all literal types.
 2024-12-10 02:28:28 +00:00
overlookmotel
8f8b4c31ad test(transformer): enable fixture overrides for logical-assignment-operators transform (#7758) 
Enable overriding Babel's fixtures for logical assignment operators transform.
 2024-12-10 02:28:27 +00:00
overlookmotel
e48769a45d fix(transformer/logic-assignment-operator): always create IdentifierReferences with ReferenceId (#7745) 
Use `TransformCtx::duplicate_expression` (introduced in #7754) to decide when to create temp vars for member expression object and computed property.

This fixes a bug where `IdentifierReference`s created when transforming `key` in `object[key] &&= value` were created without a `ReferenceId` (due to `clone_in`).

We didn't catch this before because Babel's test fixtures only cover `object[key++] &&= value` not the simpler `object[key] &&= value`. Add tests for this.
 2024-12-10 02:28:26 +00:00
overlookmotel
97acd88793 test(transformer/class-properties): add more tests (#7743) 
Babel's tests only cover transforming `this.#prop &&= value` with logical assignment operators transform also enabled. Add tests for just class properties transform alone.
 2024-12-09 14:17:12 +00:00
overlookmotel
88a0b9c4af test(transformer/class-properties): override test output for _super in class constructor (#7729) 
Our output for this test differs from Babel, because we handle `super()` in class constructors differently, but our output is valid.
 2024-12-08 17:57:57 +00:00
overlookmotel
3bae741bb4 test(transformer/class-properties): override test output for _super in class constructor (#7726) 
Our output for this test differs from Babel, because we handle `super()` in class constructors differently, but our output is valid.
 2024-12-08 15:52:27 +00:00
Boshen
85eec3c82e feat(napi/transform,napi/parser): return structured error object (#7724) 
closes #7261
 2024-12-08 14:11:56 +00:00
overlookmotel
37709cec18 test(transformer): transform conformance print code with double-space indent (#7707) 
Transform conformance tester (`just test-transform`) print code with double-space indent, instead of tabs. This matches our formatting convention for JS files.
 2024-12-08 02:58:18 +00:00
overlookmotel
34a8d91454 test(transformer): fix merging options in fixtures update script (#7712) 
Fix how options are merged with options from parent folder(s). It's much simpler than I had thought. If folder's options contains `plugins`, that overwrites `plugins` from parent options. They don't get merged.
 2024-12-08 01:41:39 +00:00
overlookmotel
dd55b84399 refactor(transformer/class-properties): shorten output when _super function (#7710) 
Produce more compact output when insert a `_super` function into class constructor.
 2024-12-08 01:41:36 +00:00
overlookmotel
97e4185c19 fix(transformer/class-properties): fix SymbolFlags for _super function (#7709) 
Fix `SymbolFlags` for generated `_super` function outside class.
 2024-12-08 01:41:35 +00:00
overlookmotel
de5b0b63a9 fix(transformer/class-properties): make _super function outside class strict mode (#7708) 
When create a `_super` function outside class, ensure it's always strict mode. The code it contains was previously inside the class, so was strict mode.
 2024-12-08 01:41:34 +00:00
overlookmotel
5fd136139f test(transformer/class-properties): override fixtures (#7689) 
Override some transform conformance test fixtures for class properties transform, where:

* Our output differs from Babel in cosmetic manner only.
* Our transform intentionally works differently from Babel.
* Babel's fixtures enable arrow functions transform, which malfunctions in our implementation. But we're not trying to test arrow functions transform here, so disable it.
 2024-12-08 01:41:33 +00:00
overlookmotel
efaaa97986 test(transformer): update fixtures script support overrides (#7688) 
Support overriding test fixtures in `update_fixtures.js` script.

Any files in `tasks/transform_conformance/overrides` are copied into Babel test fixtures. If `options.json` is overridden, then script runs Babel with updated options, to generate a new `output` file for the fixture.
 2024-12-08 01:41:32 +00:00
overlookmotel
da63e873d9 test(transformer/class-properties): exec test for this in computed key (#7687) 
Add an exec test for #7686.
 2024-12-08 01:41:31 +00:00
overlookmotel
65a1c311ab test(transformer): fix exec test reporter (#7722) 
`JsonReporter` which the custom test reporter introduced in #7715 uses does not provide error message in `message` prop, where cause of failure is failing assertions. So tests failing due to failing assertions were omitted from snapshot. Include them.

Also add count of passing tests at top of the snapshot.
 2024-12-08 01:41:30 +00:00
Boshen
5891166c80 feat(transform_conformance): custom reporter for exec test (#7715) 
closes #7704
 2024-12-07 11:25:00 +00:00
Boshen
72eab6cd96 feat(parser)!: stage 3 import source and import defer (#7706) 
* https://github.com/tc39/proposal-defer-import-eval
* https://github.com/tc39/proposal-source-phase-imports
* https://tc39.es/proposal-source-phase-imports/#sec-ecmascript-language-expressions
* https://tc39.es/proposal-defer-import-eval/#prod-NameSpaceImport
 2024-12-06 16:15:52 +00:00
Dunqing
86d4c90e4d feat(transformer/class-properties): support for transforming AssignmentTarget (#7697) 
Instance prop:
 * `[object.#prop] = arr` -> `[_toSetter(_classPrivateFieldSet, [_prop, object])._] = arr`
 * `({x: object.#prop} = obj)` -> `({ x: _toSetter(_classPrivateFieldSet, [_prop, object])._ } = obj)`

 Static prop:
 * `[object.#prop] = arr` -> `[_assertClassBrand(Class, object, _prop)._] = arr`
 * `({x: object.#prop} = obj)` -> `({ x: _assertClassBrand(Class, object, _prop)._ } = obj)`
 2024-12-06 12:18:54 +00:00
Boshen
66a680a119
deps(coverage): bump test262 (#7695) 2024-12-06 14:34:01 +08:00
Boshen
c3a538c47c
deps: node v22.12.0 (#7693) 2024-12-06 13:59:37 +08:00
overlookmotel
72b5d58560 fix(transformer/class-properties): create temp var for this in computed key (#7686) 
`this` in computed key needs a temp var, otherwise once moved into constructor it refers to the wrong `this`.
 2024-12-06 02:20:57 +00:00
Dunqing
0ca10e270a refactor(transformer): use ctx.var_declarations.create_var* methods (#7666) 
It turns out these APIs are very useful, we remove many boilerplate code.
 2024-12-05 14:31:20 +00:00
overlookmotel
3de4a43761 test(minifier): reformat minsize table (#7678) 
Reformat the table which `minsize` task outputs. I always found the column headings confusing previously.
 2024-12-05 12:16:29 +00:00
Boshen
d0b78f7361 feat(codegen): minify whitespace for some expressions (#7671) 
part of #7638
 2024-12-05 06:59:17 +00:00
Dunqing
c793d71a78 feat(transformer/class-properties): transform ChainExpression (#7575) 
Fully support transforming ChainExpression in class properties. Our implementation has some differences in execution order compared to Babel, but we have passed all execution-related tests.
 2024-12-04 16:52:57 +00:00
Boshen
8c0b0ee2bd fix(parser): better diagnostic for invalid for await syntax (#7649) 2024-12-04 15:18:29 +00:00
Boshen
d2767bea62 feat(semantic): syntax error for delete object?.#a (#7636) 
closes #7603
 2024-12-04 05:33:05 +00:00
Boshen
1486849ec2 fix(semantic): syntax error for undeclared private field access (#7635) 
closes #7582
 2024-12-04 05:33:04 +00:00
IWANABETHATGUY
6af8659624 fix(oxc_transformer): correct generate ThisExpr and import.meta in jsx pragma (#7553) 2024-12-03 13:54:15 +00:00
overlookmotel
eb825edee2 fix(transformer/class-properties): replace references to class name with temp var in static prop initializers (#7610) 
Similar to #7516. Fix class properties transform to replace references to class name in static prop initializers with temp var.

Input:

```js
class C {
  static getSelf = () => C;
}
const C2 = C;
C = 123;
assert(C2.getSelf() === C);
```

Output:

```js
var _C;
class C {}
_C = C;
_defineProperty(C, "getSelf", () => _C);
const C2 = C;
C = 123;
assert(C2.getSelf() === C);
```

Previously, temp var wasn't used so code was `_defineProperty(C, "getSelf", () => C);`. `C` is altered later by `C = 123`, so `C2.getSelf()` returned `123`, instead of reference to the class.
 2024-12-03 12:43:21 +00:00
Boshen
348d4f451a feat(sourcemap): move oxc_sourcemap to github.com/oxc-project/oxc-sourcemap (#7604) 
It's mostly stable so we can v1.0.0 it.

And we will create cyclic dependency with StringWizard soon.
 2024-12-03 11:59:43 +00:00
overlookmotel
0eadd9f6de fix(transformer/class-properties): create temp var for class where required (#7516) 
Fix class properties transform to create a temp var for class when it's required.

Input:

```js
class C {
  static getSelf = () => this;
}
const C2 = C;
C = 123;
assert(C2.getSelf() === C);
```

Output:

```js
var _C;
class C {}
_C = C;
_defineProperty(C, "getSelf", () => _C);
const C2 = C;
C = 123;
assert(C2.getSelf() === C);
```

Previously, temp var wasn't used so code was `_defineProperty(C, "getSelf", () => C);`. `C` is altered later by `C = 123`, so `C2.getSelf()` returned `123`, instead of reference to the class.

The logic around when a temp var is required and when it's not, and when/where it's referenced is ridiculously complicated. So add some debug assert mechanisms to double-check the logic.
 2024-12-03 07:46:04 +00:00
overlookmotel
7bd6350978 refactor(transformer/class-properties): move creating temp var out of main loop (#7587) 
Small optimization. Move code out of the loop which determines if class property transform has nothing to do and can bail out early. This also clears the way for correcting the logic around when temp vars are/aren't created in #7516.
 2024-12-03 07:46:01 +00:00
IWANABETHATGUY
a784a82f4f feat(oxc_transformer): support jsx pragma that are long member expressions (#7538) 
related tests:

d34e79e2a9/internal/bundler_tests/bundler_default_test.go (L6188-L6236)
 2024-12-02 14:02:38 +00:00
Boshen
18519dea33 refactor(syntax): remove ModuleRecord::export_default (#7578) 
This value can be derived.
 2024-12-02 09:17:57 +00:00
Boshen
bf16668de7 feat(transform_conformance): keep exec snapshot files (#7565) 
closes #7564
 2024-12-01 10:13:47 +00:00
Boshen
a6b0100501
docs(linter): fix config example headings (#7562) 
Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
 2024-12-01 16:31:22 +08:00
Boshen
0f3f67a05a refactor(linter): add capability of adding semantic data to module record (#7561) 
closes #5814
closes #5816
 2024-12-01 08:14:43 +00:00
Boshen
c2ced15dfd feat(parser,linter)!: use a different ModuleRecord for linter (#7554) 
The parser returns a simple `ModuleRecord` that is allocated in the arena for performance reasons.

The linter uses a more complicated, `Send` + `Sync` `ModuleRecord` that will hold more cross-module information.

The next step is to return more esm information from the parser to eliminated the need of the `oxc_module_lexer` crate.
 2024-11-30 16:02:01 +00:00
Boshen
0be5233c84 refactor(semantic)!: remove ModuleRecord from Semantic (#7548) 
`ModuleRecord` will eventually be moved to be linter specific thing for cross module data sharing, which means we can add more data to it.
 2024-11-29 16:30:54 +00:00
Boshen
8a788b8f4b feat(parser)!: Build ModuleRecord directly in parser (#7546) 
This has the benefit of:

* expose dynamic import / import meta info from parser
* 1 less ast shallow in semantic builder
* no ast walk in oxc's module lexer
* some more benefits coming soon
 2024-11-29 14:50:42 +00:00
renovate
d0842e070a chore(deps): update dependency rust to v1.83.0 (#7537) 
This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [rust](https://redirect.github.com/rust-lang/rust) | minor | `1.82.0` -> `1.83.0` |

---

### Release Notes

<details>
<summary>rust-lang/rust (rust)</summary>

### [`v1.83.0`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1830-2024-11-28)

[Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.82.0...1.83.0)

\==========================

<a id="1.83.0-Language"></a>

## Language

-   [Stabilize `&mut`, `*mut`, `&Cell`, and `*const Cell` in const.](https://redirect.github.com/rust-lang/rust/pull/129195)
-   [Allow creating references to statics in `const` initializers.](https://redirect.github.com/rust-lang/rust/pull/129759)
-   [Implement raw lifetimes and labels (`'r#ident`).](https://redirect.github.com/rust-lang/rust/pull/126452)
-   [Define behavior when atomic and non-atomic reads race.](https://redirect.github.com/rust-lang/rust/pull/128778)
-   [Non-exhaustive structs may now be empty.](https://redirect.github.com/rust-lang/rust/pull/128934)
-   [Disallow implicit coercions from places of type `!`](https://redirect.github.com/rust-lang/rust/pull/129392)
-   [`const extern` functions can now be defined for other calling conventions.](https://redirect.github.com/rust-lang/rust/pull/129753)
-   [Stabilize `expr_2021` macro fragment specifier in all editions.](https://redirect.github.com/rust-lang/rust/pull/129972)
-   [The `non_local_definitions` lint now fires on less code and warns by default.](https://redirect.github.com/rust-lang/rust/pull/127117)

<a id="1.83.0-Compiler"></a>

## Compiler

-   [Deprecate unsound `-Csoft-float` flag.](https://redirect.github.com/rust-lang/rust/pull/129897)
-   Add many new tier 3 targets:
    -   [`aarch64_unknown_nto_qnx700`](https://redirect.github.com/rust-lang/rust/pull/127897)
    -   [`arm64e-apple-tvos`](https://redirect.github.com/rust-lang/rust/pull/130614)
    -   [`armv7-rtems-eabihf`](https://redirect.github.com/rust-lang/rust/pull/127021)
    -   [`loongarch64-unknown-linux-ohos`](https://redirect.github.com/rust-lang/rust/pull/130750)
    -   [`riscv32-wrs-vxworks` and `riscv64-wrs-vxworks`](https://redirect.github.com/rust-lang/rust/pull/130549)
    -   [`riscv32{e|em|emc}-unknown-none-elf`](https://redirect.github.com/rust-lang/rust/pull/130555)
    -   [`x86_64-unknown-hurd-gnu`](https://redirect.github.com/rust-lang/rust/pull/128345)
    -   [`x86_64-unknown-trusty`](https://redirect.github.com/rust-lang/rust/pull/130453)

Refer to Rust's \[platform support page]\[platform-support-doc]
for more information on Rust's tiered platform support.

<a id="1.83.0-Libraries"></a>

## Libraries

-   [Implement `PartialEq` for `ExitCode`.](https://redirect.github.com/rust-lang/rust/pull/127633)
-   [Document that `catch_unwind` can deal with foreign exceptions without UB, although the exact behavior is unspecified.](https://redirect.github.com/rust-lang/rust/pull/128321)
-   [Implement `Default` for `HashMap`/`HashSet` iterators that don't already have it.](https://redirect.github.com/rust-lang/rust/pull/128711)
-   [Bump Unicode to version 16.0.0.](https://redirect.github.com/rust-lang/rust/pull/130183)
-   [Change documentation of `ptr::add`/`sub` to not claim equivalence with `offset`.](https://redirect.github.com/rust-lang/rust/pull/130229).

<a id="1.83.0-Stabilized-APIs"></a>

## Stabilized APIs

-   [`BufRead::skip_until`](https://doc.rust-lang.org/stable/std/io/trait.BufRead.html#method.skip_until)
-   [`ControlFlow::break_value`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.break_value)
-   [`ControlFlow::continue_value`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.continue_value)
-   [`ControlFlow::map_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_break)
-   [`ControlFlow::map_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_continue)
-   [`DebugList::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugList.html#method.finish_non_exhaustive)
-   [`DebugMap::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugMap.html#method.finish_non_exhaustive)
-   [`DebugSet::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugSet.html#method.finish_non_exhaustive)
-   [`DebugTuple::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugTuple.html#method.finish_non_exhaustive)
-   [`ErrorKind::ArgumentListTooLong`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ArgumentListTooLong)
-   [`ErrorKind::Deadlock`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.Deadlock)
-   [`ErrorKind::DirectoryNotEmpty`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.DirectoryNotEmpty)
-   [`ErrorKind::ExecutableFileBusy`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ExecutableFileBusy)
-   [`ErrorKind::FileTooLarge`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.FileTooLarge)
-   [`ErrorKind::HostUnreachable`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.HostUnreachable)
-   [`ErrorKind::IsADirectory`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.IsADirectory)
-   [`ErrorKind::NetworkDown`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkDown)
-   [`ErrorKind::NetworkUnreachable`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkUnreachable)
-   [`ErrorKind::NotADirectory`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotADirectory)
-   [`ErrorKind::NotSeekable`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotSeekable)
-   [`ErrorKind::ReadOnlyFilesystem`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ReadOnlyFilesystem)
-   [`ErrorKind::ResourceBusy`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ResourceBusy)
-   [`ErrorKind::StaleNetworkFileHandle`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StaleNetworkFileHandle)
-   [`ErrorKind::StorageFull`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StorageFull)
-   [`ErrorKind::TooManyLinks`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.TooManyLinks)
-   [`Option::get_or_insert_default`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.get_or_insert_default)
-   [`Waker::data`](https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.data)
-   [`Waker::new`](https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.new)
-   [`Waker::vtable`](https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.vtable)
-   [`char::MIN`](https://doc.rust-lang.org/stable/core/primitive.char.html#associatedconstant.MIN)
-   [`hash_map::Entry::insert_entry`](https://doc.rust-lang.org/stable/std/collections/hash_map/enum.Entry.html#method.insert_entry)
-   [`hash_map::VacantEntry::insert_entry`](https://doc.rust-lang.org/stable/std/collections/hash_map/struct.VacantEntry.html#method.insert_entry)

These APIs are now stable in const contexts:

-   [`Cell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.Cell.html#method.into_inner)
-   [`Duration::as_secs_f32`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f32)
-   [`Duration::as_secs_f64`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f64)
-   [`Duration::div_duration_f32`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f32)
-   [`Duration::div_duration_f64`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f64)
-   [`MaybeUninit::as_mut_ptr`](https://doc.rust-lang.org/stable/core/mem/union.MaybeUninit.html#method.as_mut_ptr)
-   [`NonNull::as_mut`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.as_mut)
-   [`NonNull::copy_from`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from)
-   [`NonNull::copy_from_nonoverlapping`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from_nonoverlapping)
-   [`NonNull::copy_to`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to)
-   [`NonNull::copy_to_nonoverlapping`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to_nonoverlapping)
-   [`NonNull::slice_from_raw_parts`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.slice_from_raw_parts)
-   [`NonNull::write`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write)
-   [`NonNull::write_bytes`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_bytes)
-   [`NonNull::write_unaligned`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_unaligned)
-   [`OnceCell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.OnceCell.html#method.into_inner)
-   [`Option::as_mut`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.as_mut)
-   [`Option::expect`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.expect)
-   [`Option::replace`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.replace)
-   [`Option::take`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.take)
-   [`Option::unwrap`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap)
-   [`Option::unwrap_unchecked`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap_unchecked)
-   [`Option::<&_>::copied`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied)
-   [`Option::<&mut _>::copied`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied-1)
-   [`Option::<Option<_>>::flatten`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.flatten)
-   [`Option::<Result<_, _>>::transpose`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.transpose)
-   [`RefCell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.RefCell.html#method.into_inner)
-   [`Result::as_mut`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.as_mut)
-   [`Result::<&_, _>::copied`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied)
-   [`Result::<&mut _, _>::copied`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied-1)
-   [`Result::<Option<_>, _>::transpose`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.transpose)
-   [`UnsafeCell::get_mut`](https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.get_mut)
-   [`UnsafeCell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.into_inner)
-   [`array::from_mut`](https://doc.rust-lang.org/stable/core/array/fn.from_mut.html)
-   [`char::encode_utf8`](https://doc.rust-lang.org/stable/core/primitive.char.html#method.encode_utf8)
-   [`{float}::classify`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.classify)
-   [`{float}::is_finite`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_finite)
-   [`{float}::is_infinite`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_infinite)
-   [`{float}::is_nan`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_nan)
-   [`{float}::is_normal`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_normal)
-   [`{float}::is_sign_negative`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_negative)
-   [`{float}::is_sign_positive`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_positive)
-   [`{float}::is_subnormal`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_subnormal)
-   [`{float}::from_bits`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_bits)
-   [`{float}::from_be_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_be_bytes)
-   [`{float}::from_le_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_le_bytes)
-   [`{float}::from_ne_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_ne_bytes)
-   [`{float}::to_bits`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_bits)
-   [`{float}::to_be_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_be_bytes)
-   [`{float}::to_le_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_le_bytes)
-   [`{float}::to_ne_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_ne_bytes)
-   [`mem::replace`](https://doc.rust-lang.org/stable/core/mem/fn.replace.html)
-   [`ptr::replace`](https://doc.rust-lang.org/stable/core/ptr/fn.replace.html)
-   [`ptr::slice_from_raw_parts_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.slice_from_raw_parts_mut.html)
-   [`ptr::write`](https://doc.rust-lang.org/stable/core/ptr/fn.write.html)
-   [`ptr::write_unaligned`](https://doc.rust-lang.org/stable/core/ptr/fn.write_unaligned.html)
-   [`<*const _>::copy_to`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to)
-   [`<*const _>::copy_to_nonoverlapping`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping)
-   [`<*mut _>::copy_from`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from)
-   [`<*mut _>::copy_from_nonoverlapping`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from_nonoverlapping)
-   [`<*mut _>::copy_to`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to-1)
-   [`<*mut _>::copy_to_nonoverlapping`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping-1)
-   [`<*mut _>::write`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write)
-   [`<*mut _>::write_bytes`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_bytes)
-   [`<*mut _>::write_unaligned`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_unaligned)
-   [`slice::from_mut`](https://doc.rust-lang.org/stable/core/slice/fn.from_mut.html)
-   [`slice::from_raw_parts_mut`](https://doc.rust-lang.org/stable/core/slice/fn.from_raw_parts_mut.html)
-   [`<[_]>::first_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_mut)
-   [`<[_]>::last_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_mut)
-   [`<[_]>::first_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_chunk_mut)
-   [`<[_]>::last_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_chunk_mut)
-   [`<[_]>::split_at_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut)
-   [`<[_]>::split_at_mut_checked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_checked)
-   [`<[_]>::split_at_mut_unchecked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_unchecked)
-   [`<[_]>::split_first_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_mut)
-   [`<[_]>::split_last_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_mut)
-   [`<[_]>::split_first_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_chunk_mut)
-   [`<[_]>::split_last_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_chunk_mut)
-   [`str::as_bytes_mut`](https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_bytes_mut)
-   [`str::as_mut_ptr`](https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_mut_ptr)
-   [`str::from_utf8_unchecked_mut`](https://doc.rust-lang.org/stable/core/str/fn.from_utf8\_unchecked_mut.html)

<a id="1.83.0-Cargo"></a>

## Cargo

-   [Introduced a new `CARGO_MANIFEST_PATH` environment variable, similar to `CARGO_MANIFEST_DIR` but pointing directly to the manifest file.](https://redirect.github.com/rust-lang/cargo/pull/14404/)
-   [Added `package.autolib` to the manifest, allowing `[lib]` auto-discovery to be disabled.](https://redirect.github.com/rust-lang/cargo/pull/14591/)
-   [Declare support level for each crate in Cargo's Charter / crate docs.](https://redirect.github.com/rust-lang/cargo/pull/14600/)
-   [Declare new Intentional Artifacts as 'small' changes.](https://redirect.github.com/rust-lang/cargo/pull/14599/)

<a id="1.83-Rustdoc"></a>

## Rustdoc

-   [The sidebar / hamburger menu table of contents now includes the `# headers` from the main item's doc comment](https://redirect.github.com/rust-lang/rust/pull/120736). This is similar to a third-party feature provided by the rustdoc-search-enhancements browser extension.

<a id="1.83.0-Compatibility-Notes"></a>

## Compatibility Notes

-   [Warn against function pointers using unsupported ABI strings.](https://redirect.github.com/rust-lang/rust/pull/128784)
-   [Check well-formedness of the source type's signature in fn pointer casts.](https://redirect.github.com/rust-lang/rust/pull/129021) This partly closes a soundness hole that comes when casting a function item to function pointer
-   [Use equality instead of subtyping when resolving type dependent paths.](https://redirect.github.com/rust-lang/rust/pull/129073)
-   Linking on macOS now correctly includes Rust's default deployment target. Due to a linker bug, you might have to pass `MACOSX_DEPLOYMENT_TARGET` or fix your `#[link]` attributes to point to the correct frameworks. See [#&#8203;129369](https://redirect.github.com/rust-lang/rust/pull/129369).
-   [Rust will now correctly raise an error for `repr(Rust)` written on non-`struct`/`enum`/`union` items, since it previous did not have any effect.](https://redirect.github.com/rust-lang/rust/pull/129422)
-   The future incompatibility lint `deprecated_cfg_attr_crate_type_name` [has been made into a hard error](https://redirect.github.com/rust-lang/rust/pull/129670). It was used to deny usage of `#![crate_type]` and `#![crate_name]` attributes in `#![cfg_attr]`, which required a hack in the compiler to be able to change the used crate type and crate name after cfg expansion.
    Users can use `--crate-type` instead of `#![cfg_attr(..., crate_type = "...")]` and `--crate-name` instead of `#![cfg_attr(..., crate_name = "...")]` when running `rustc`/`cargo rustc` on the command line.
    Use of those two attributes outside of `#![cfg_attr]` continue to be fully supported.
-   Until now, paths into the sysroot were always prefixed with `/rustc/$hash` in diagnostics, codegen, backtrace, e.g.

        thread 'main' panicked at 'hello world', map-panic.rs:2:50
        stack backtrace:
           0: std::panicking::begin_panic
                     at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:616:12
           1: map_panic::main::{{closure}}
                     at ./map-panic.rs:2:50
           2: core::option::Option<T>::map
                     at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/option.rs:929:29
           3: map_panic::main
                     at ./map-panic.rs:2:30
           4: core::ops::function::FnOnce::call_once
                     at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/ops/function.rs:248:5
        note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

    [RFC 3127 said](https://rust-lang.github.io/rfcs/3127-trim-paths.html#changing-handling-of-sysroot-path-in-rustc)

    > We want to change this behaviour such that, when `rust-src` source files can be discovered, the virtual path is discarded and therefore the local path will be embedded, unless there is a `--remap-path-prefix` that causes this local path to be remapped in the usual way.

    [#&#8203;129687](https://redirect.github.com/rust-lang/rust/pull/129687) implements this behaviour, when `rust-src` is present at compile time, `rustc` replaces `/rustc/$hash` with a real path into the local `rust-src` component with best effort.
    To sanitize this, users must explicitly supply `--remap-path-prefix=<path to rust-src>=foo` or not have the `rust-src` component installed.
-   The allow-by-default `missing_docs` lint used to disable itself when invoked through `rustc --test`/`cargo test`, resulting in `#[expect(missing_docs)]` emitting false positives due to the expectation being wrongly unfulfilled. This behavior [has now been removed](https://redirect.github.com/rust-lang/rust/pull/130025), which allows `#[expect(missing_docs)]` to be fulfilled in all scenarios, but will also report new `missing_docs` diagnostics for publicly reachable `#[cfg(test)]` items, [integration test](https://doc.rust-lang.org/cargo/reference/cargo-targets.html#integration-tests) crate-level documentation, and publicly reachable items in integration tests.
-   [The `armv8r-none-eabihf` target now uses the Armv8-R required set of floating-point features.](https://redirect.github.com/rust-lang/rust/pull/130295)
-   [Fix a soundness bug where rustc wouldn't detect unconstrained higher-ranked lifetimes in a `dyn Trait`'s associated types that occur due to supertraits.](https://redirect.github.com/rust-lang/rust/pull/130367)
-   [Update the minimum external LLVM version to 18.](https://redirect.github.com/rust-lang/rust/pull/130487)
-   [Remove `aarch64-fuchsia` and `x86_64-fuchsia` target aliases in favor of `aarch64-unknown-fuchsia` and `x86_64-unknown-fuchsia` respectively.](https://redirect.github.com/rust-lang/rust/pull/130657)
-   [The ABI-level exception class of a Rust panic is now encoded with native-endian bytes, so it is legible in hex dumps.](https://redirect.github.com/rust-lang/rust/pull/130897)
-   [Visual Studio 2013 is no longer supported for MSVC targets.](https://redirect.github.com/rust-lang/rust/pull/131070)
-   [The sysroot no longer contains the `std` dynamic library in its top-level `lib/` dir.](https://redirect.github.com/rust-lang/rust/pull/131188)

</details>

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