Add changelog for 3.3.1-RC1

[Cherry-picked 390f836]
isaacl · Oct 18, 2023 · d86c4b9 · d86c4b9
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+# Highlights of the release
+
+- Support records in JavaParsers [#16762](https://github.com/lampepfl/dotty/pull/16762)
+- Port JVM backend refactor from Scala 2 [#15322](https://github.com/lampepfl/dotty/pull/15322)
+
+# Other changes and fixes
+
+## Backend
+
+- Disallow mixins where super calls bind to vals [#16908](https://github.com/lampepfl/dotty/pull/16908)
+- Fix #15107: Avoid re-emitting a LineNumber after only LabelNodes. [#16813](https://github.com/lampepfl/dotty/pull/16813)
+
+## Coverage
+
+- Fix #17042: Preserve the shape of secondary ctors in instrumentCoverage. [#17111](https://github.com/lampepfl/dotty/pull/17111)
+
+## Default parameters
+
+- Dupe fix when finding default arg getters [#17058](https://github.com/lampepfl/dotty/pull/17058)
+
+## Documentation
+
+- Fix: ensure syntax blocks for ebnf are marked as such [#16837](https://github.com/lampepfl/dotty/pull/16837)
+
+## Erasure
+
+- Handle `@companionClass` and `@companionMethod` meta-annotations [#17091](https://github.com/lampepfl/dotty/pull/17091)
+
+## Extension Methods
+
+- Support extension methods imported from different objects [#17050](https://github.com/lampepfl/dotty/pull/17050)
+
+## GADTs
+
+- Fix tuple member selection so it works with GADT healing [#16766](https://github.com/lampepfl/dotty/pull/16766)
+- Fix upper bound constraints, that are higher-kinded [#16744](https://github.com/lampepfl/dotty/pull/16744)
+- Split out immutable GadtConstraint [#16602](https://github.com/lampepfl/dotty/pull/16602)
+
+## Implicits
+
+- Improve subtyping check for not yet eta-expanded higher kinded types [#17139](https://github.com/lampepfl/dotty/pull/17139)
+- Harden tpd.Apply/TypeApply in case of errors [#16887](https://github.com/lampepfl/dotty/pull/16887)
+- Try to be more subtle when inferring type parameters of class parents [#16896](https://github.com/lampepfl/dotty/pull/16896)
+- Include `P` in the implicit scope of `P.this.type` [#17088](https://github.com/lampepfl/dotty/pull/17088)
+
+## Incremental Compilation
+
+- Fix under-compilation when the method type in a SAM changes [#16996](https://github.com/lampepfl/dotty/pull/16996)
+
+## Infrastructure
+
+- Set reference version to 3.3.0-RC6 [#17504](https://github.com/lampepfl/dotty/pull/17504)
+- Fix #17119: Download Coursier from GitHub directly [#17141](https://github.com/lampepfl/dotty/pull/17141)
+
+## Inline
+
+- Remove NamedArg from inlined arguments [#17228](https://github.com/lampepfl/dotty/pull/17228)
+- Don't generate a Select for a TermRef with NoPrefix [#16754](https://github.com/lampepfl/dotty/pull/16754)
+- Prepare bodies of inline forwarders eagerly [#16757](https://github.com/lampepfl/dotty/pull/16757)
+- Do not remove inline method implementations until PruneErasedDefs [#17408](https://github.com/lampepfl/dotty/pull/17408)
+
+## Java Interop
+
+- ClassfileParser: allow missing param names (for JDK 21) [#17536](https://github.com/lampepfl/dotty/pull/17536)
+
+## Linting
+
+- Improve -Wunused: locals, privates with unset vars warning #16639 [#17160](https://github.com/lampepfl/dotty/pull/17160)
+- Fix wunused false positive when deriving alias type [#17157](https://github.com/lampepfl/dotty/pull/17157)
+- Port `-Wnonunit-statement` setting for dotty [#16936](https://github.com/lampepfl/dotty/pull/16936)
+
+## Match Types
+
+- Normalize match type usage during implicit lookup [#17457](https://github.com/lampepfl/dotty/pull/17457)
+- Fix #13757: Explicitly disallow higher-kinded scrutinees of match types. [#17322](https://github.com/lampepfl/dotty/pull/17322)
+- Fix match type reduction with wildcard type arguments [#17065](https://github.com/lampepfl/dotty/pull/17065)
+- Fix check whether classtag can be generated for match types [#16708](https://github.com/lampepfl/dotty/pull/16708)
+
+## Parser
+
+- Allow lines starting with `.` to fall outside previous indentation widths [#17056](https://github.com/lampepfl/dotty/pull/17056)
+
+## Pattern Matching
+
+- Fix #11541: Specialize ClassTag[T] in exhaustivity check [#17385](https://github.com/lampepfl/dotty/pull/17385)
+- Check outer class prefixes in type projections when pattern matching [#17136](https://github.com/lampepfl/dotty/pull/17136)
+- Make unchecked cases non-`@unchecked` and non-unreachable [#16958](https://github.com/lampepfl/dotty/pull/16958)
+- Fix #16899: Better handle X instanceOf P where X is T1 | T2 [#17382](https://github.com/lampepfl/dotty/pull/17382)
+
+## Pickling
+
+- ClassfileParser: Avoid cycle when accessing companion in inner class lookup [#16882](https://github.com/lampepfl/dotty/pull/16882)
+
+## Polyfunctions
+
+- Fix type aliases in beta-reduction of polyfunctions [#17054](https://github.com/lampepfl/dotty/pull/17054)
+
+## Quotes
+
+- Register `paramProxy` and `thisProxy` in `Quote` type [#17541](https://github.com/lampepfl/dotty/pull/17541)
+- Only check newVal/newMethod privateWithin on -Xcheck-macros [#17437](https://github.com/lampepfl/dotty/pull/17437)
+- Unencode quote and splice trees [#17342](https://github.com/lampepfl/dotty/pull/17342)
+- Correctly type Expr.ofTupleFromSeq for arity > 22 [#17261](https://github.com/lampepfl/dotty/pull/17261)
+- Use TermRef to distinguish distinct Type[T] instances  [#17205](https://github.com/lampepfl/dotty/pull/17205)
+- Check level consistency of SingletonTypeTree as a type [#17209](https://github.com/lampepfl/dotty/pull/17209)
+- Fix splice type variable pattern detection [#17048](https://github.com/lampepfl/dotty/pull/17048)
+- Avoid creation of `@SplicedType` quote local refrences [#17051](https://github.com/lampepfl/dotty/pull/17051)
+- Dealias type references when healing types in quotes [#17049](https://github.com/lampepfl/dotty/pull/17049)
+- Replace quoted type variables in signature of HOAS pattern result  [#16951](https://github.com/lampepfl/dotty/pull/16951)
+- Beta-reduce directly applied PolymorphicFunction [#16623](https://github.com/lampepfl/dotty/pull/16623)
+- Use `Object.toString` for `quoted.{Expr, Type}` [#16663](https://github.com/lampepfl/dotty/pull/16663)
+- Fix Splicer.isEscapedVariable [#16838](https://github.com/lampepfl/dotty/pull/16838)
+- Fix references to class members defined in quotes [#17107](https://github.com/lampepfl/dotty/pull/17107)
+- Handle pickled forward references in pickled expressions [#16855](https://github.com/lampepfl/dotty/pull/16855)
+- Fix #16615 - crashes of path dependent types in spliced Type.of [#16773](https://github.com/lampepfl/dotty/pull/16773)
+- Disallow local term references in staged types [#16362](https://github.com/lampepfl/dotty/pull/16362)
+- Refactor level checking / type healing logic [#17082](https://github.com/lampepfl/dotty/pull/17082)
+- Dealias quoted types when staging [#17059](https://github.com/lampepfl/dotty/pull/17059)
+- Fix quotes with references to path dependent types [#17081](https://github.com/lampepfl/dotty/pull/17081)
+- Make arguments order in quote hole deterministic [#17405](https://github.com/lampepfl/dotty/pull/17405)
+- Only transform the body of the quote with QuoteTransformer [#17451](https://github.com/lampepfl/dotty/pull/17451)
+- Place staged type captures in Quote AST [#17424](https://github.com/lampepfl/dotty/pull/17424)
+- Add SplicePattern AST to parse and type quote pattern splices [#17396](https://github.com/lampepfl/dotty/pull/17396)
+
+## Reflection
+
+- -Xcheck-macros: add hint when a symbol in created twice [#16733](https://github.com/lampepfl/dotty/pull/16733)
+- Assert that symbols created using reflect API have correct privateWithin symbols [#17352](https://github.com/lampepfl/dotty/pull/17352)
+- Fix reflect.LambdaType type test [#16972](https://github.com/lampepfl/dotty/pull/16972)
+- Improve `New`/`Select` -Ycheck message [#16746](https://github.com/lampepfl/dotty/pull/16746)
+- Improve error message for CyclicReference in macros [#16749](https://github.com/lampepfl/dotty/pull/16749)
+- Add reflect `defn.FunctionClass` overloads [#16849](https://github.com/lampepfl/dotty/pull/16849)
+
+## REPL
+
+- Always load REPL classes in macros including the output directory [#16866](https://github.com/lampepfl/dotty/pull/16866)
+
+## Reporting
+
+- Improve missing argument list error [#17126](https://github.com/lampepfl/dotty/pull/17126)
+- Improve implicit parameter error message with aliases [#17125](https://github.com/lampepfl/dotty/pull/17125)
+- Improve "constructor proxy shadows outer" handling [#17154](https://github.com/lampepfl/dotty/pull/17154)
+- Clarify ambiguous reference error message [#16137](https://github.com/lampepfl/dotty/pull/16137)
+- Hint about forbidden combination of implicit values and conversions [#16735](https://github.com/lampepfl/dotty/pull/16735)
+- Attach explanation message to diagnostic message [#16787](https://github.com/lampepfl/dotty/pull/16787)
+- Propagate implicit search errors from implicit macros [#16840](https://github.com/lampepfl/dotty/pull/16840)
+- Detail UnapplyInvalidReturnType error message [#17167](https://github.com/lampepfl/dotty/pull/17167)
+- Add way to debug -Xcheck-macros tree checking [#16973](https://github.com/lampepfl/dotty/pull/16973)
+- Enrich and finesse compiler crash reporting [#17031](https://github.com/lampepfl/dotty/pull/17031)
+- Allow @implicitNotFound messages as explanations [#16893](https://github.com/lampepfl/dotty/pull/16893)
+- Include top-level symbols from same file in outer ambiguity error [#17033](https://github.com/lampepfl/dotty/pull/17033)
+- Do not issue deprecation warnings when declaring deprecated case classes [#17165](https://github.com/lampepfl/dotty/pull/17165)
+
+## Scala-JS
+
+- Fix #17344: Make implicit references to this above dynamic imports explicit. [#17357](https://github.com/lampepfl/dotty/pull/17357)
+- Fix #12621: Better error message for JS trait ctor param. [#16811](https://github.com/lampepfl/dotty/pull/16811)
+- Fix #16801: Handle Closure's of s.r.FunctionXXL. [#16809](https://github.com/lampepfl/dotty/pull/16809)
+- Fix #17549: Unify how Memoize and Constructors decide what fields need storing. [#17560](https://github.com/lampepfl/dotty/pull/17560)
+
+## Scaladoc
+
+- Feat: Add a blog configuration with yaml [#17214](https://github.com/lampepfl/dotty/pull/17214)
+- Don't render the "$" for module [#17302](https://github.com/lampepfl/dotty/pull/17302)
+- Fix: Add scrollbar to the sidebar [#17203](https://github.com/lampepfl/dotty/pull/17203)
+- Scaladoc: fix crash when processing extends call [#17260](https://github.com/lampepfl/dotty/pull/17260)
+- Fix: Modify the CSS so that the logo of the generated documentation is adaptive [#17172](https://github.com/lampepfl/dotty/pull/17172)
+- Fix: Remove the duplicate parameter when generating the scaladoc. [#17097](https://github.com/lampepfl/dotty/pull/17097)
+- Fix: padding top in mobile version [#17019](https://github.com/lampepfl/dotty/pull/17019)
+- Fix: tap target of the menu in Mobile version [#17018](https://github.com/lampepfl/dotty/pull/17018)
+- Scaladoc: Fix expand icon not changing on anchor link [#17053](https://github.com/lampepfl/dotty/pull/17053)
+- Scaladoc: fix inkuire generation for PolyTypes [#17129](https://github.com/lampepfl/dotty/pull/17129)
+- Re port scroll bar [#17463](https://github.com/lampepfl/dotty/pull/17463)
+- Handle empty files and truncated YAML front matter [#17527](https://github.com/lampepfl/dotty/pull/17527)
+
+## SemanticDB
+
+- Make sure symbol exists before calling owner [#16860](https://github.com/lampepfl/dotty/pull/16860)
+- Support LambdaType (convert from HKTypeLambda) [#16056](https://github.com/lampepfl/dotty/pull/16056)
+
+## Specification
+
+- Apply `class-shadowing.md` to the Spec [#16839](https://github.com/lampepfl/dotty/pull/16839)
+- Adding base for future Spec into the compiler repo [#16825](https://github.com/lampepfl/dotty/pull/16825)
+
+## Standard Library
+
+- Optimization: avoid NotGiven allocations [#17090](https://github.com/lampepfl/dotty/pull/17090)
+
+## Tooling
+
+- Disable `ExtractSemanticDB` phase when writing to output directory defined as JAR. [#16790](https://github.com/lampepfl/dotty/pull/16790)
+- Print owner of bind symbol with -Yprint-debug-owners [#16854](https://github.com/lampepfl/dotty/pull/16854)
+- Small fixes to allow using Metals with scaladoc with sbt [#16816](https://github.com/lampepfl/dotty/pull/16816)
+
+## Transform
+
+- Move CrossVersionChecks before FirstTransform [#17301](https://github.com/lampepfl/dotty/pull/17301)
+- Fix needsOuterIfReferenced [#17159](https://github.com/lampepfl/dotty/pull/17159)
+- Drop incorrect super accessor in trait subclass [#17062](https://github.com/lampepfl/dotty/pull/17062)
+- Generate toString only for synthetic companions of case classes [#16890](https://github.com/lampepfl/dotty/pull/16890)
+- Check trait constructor for accessibility even if not called at Typer [#17094](https://github.com/lampepfl/dotty/pull/17094)
+- Fix #17435: A simpler fix [#17436](https://github.com/lampepfl/dotty/pull/17436)
+
+## Typer
+
+- Preserve type bounds for inlined definitions in posttyper [#17190](https://github.com/lampepfl/dotty/pull/17190)
+- Change logic to find members of recursive types [#17386](https://github.com/lampepfl/dotty/pull/17386)
+- Recognize named arguments in isFunctionWithUnknownParamType [#17161](https://github.com/lampepfl/dotty/pull/17161)
+- Better comparisons for type projections [#17092](https://github.com/lampepfl/dotty/pull/17092)
+- Allow selectDynamic and applyDynamic to be extension methods [#17106](https://github.com/lampepfl/dotty/pull/17106)
+- Fix use of accessibleFrom when finding default arg getters [#16977](https://github.com/lampepfl/dotty/pull/16977)
+- Map class literal constant types [#16988](https://github.com/lampepfl/dotty/pull/16988)
+- Always use adapted type in withDenotation [#16901](https://github.com/lampepfl/dotty/pull/16901)
+- Restrict captureWildcards to only be used if needed [#16799](https://github.com/lampepfl/dotty/pull/16799)
+- Don't capture wildcards if in closure or by-name [#16732](https://github.com/lampepfl/dotty/pull/16732)
+- Infer: Don't minimise to Nothing if there's an upper bound [#16786](https://github.com/lampepfl/dotty/pull/16786)
+- Perform Matchable check only if type test is needed [#16824](https://github.com/lampepfl/dotty/pull/16824)
+- Don't eta expand unary varargs methods [#16892](https://github.com/lampepfl/dotty/pull/16892)
+- Fix beta-reduction with `Nothing` and `null` args [#16938](https://github.com/lampepfl/dotty/pull/16938)
+- Generate kind-correct wildcards when selecting from a wildcard [#17025](https://github.com/lampepfl/dotty/pull/17025)
+- Fix #16405 ctd - wildcards prematurely resolving to Nothing [#16764](https://github.com/lampepfl/dotty/pull/16764)
+- Test: add regression test for #7790 [#17473](https://github.com/lampepfl/dotty/pull/17473)
+- Properly handle `AnyVal`s as refinement members of `Selectable`s  [#16286](https://github.com/lampepfl/dotty/pull/16286)
+
+# Contributors
+
+Thank you to all the contributors who made this release possible 🎉
+
+According to `git shortlog -sn --no-merges 3.3.0..3.3.1-RC1` these are:
+
+```
+   148 Nicolas Stucki
+    65 Martin Odersky
+    51 Szymon Rodziewicz
+    49 Dale Wijnand
+    49 Quentin Bernet
+    38 Chris Kipp
+    19 David Hua
+    18 Lucas
+    18 ysthakur
+    15 Fengyun Liu
+    15 Paweł Marks
+    14 Guillaume Martres
+    14 Jamie Thompson
+    11 Sébastien Doeraene
+     9 Timothée Andres
+     8 Kacper Korban
+     7 Matt Bovel
+     7 Som Snytt
+     6 Julien Richard-Foy
+     6 Lucas Leblanc
+     5 Michał Pałka
+     4 Anatolii Kmetiuk
+     4 Guillaume Raffin
+     4 Paul Coral
+     4 Wojciech Mazur
+     4 Yichen Xu
+     3 Decel
+     3 Jan Chyb
+     2 Adrien Piquerez
+     2 Arman Bilge
+     2 Carl
+     2 Florian3k
+     2 Kenji Yoshida
+     2 Michael Pilquist
+     2 Natsu Kagami
+     2 Seth Tisue
+     2 Tomasz Godzik
+     2 Vasil Vasilev
+     2 Yadu Krishnan
+     1 Bersier
+     1 Flavio Brasil
+     1 Jan-Pieter van den Heuvel
+     1 Lukas Rytz
+     1 Miles Yucht
+     1 Mohammad Yousuf Minhaj Zia
+     1 Ondra Pelech
+     1 Philippus
+     1 Rikito Taniguchi
+     1 Simon R
+     1 brandonspark
+     1 github-actions[bot]
+     1 liang3zy22
+     1 s.bazarsadaev
+     1 Łukasz Wroński
+
+```