3.3.6-RC1

Highlights of the release

• Partial Fix #21242: Add REPL init script setting #22206
• Update asm to patched 9.7.1 #22250
• REPL: Add back :silent command #22248
• Do not lift annotation arguments #22035 and #22046
• Scala 2 forwardport: -Yprofile-trace #19897

Other changes and fixes

Annotations

• Make sure symbols in annotation trees are fresh before pickling #22002
• Fix Java parsing of annotations on qualified types #21867
• Rename InlineCopier to ConservativeTreeCopier, use it in TypeMaps #21941
• Consider all arguments in Annotations.refersToParamOf #22001

Backend

• Flag class file collision as error #19332
• Backend computes line number from source of position #21763

CI

• In CI, use new standard scala/cla-checker action #22203
• Cancel stale CI executions when CI is re-triggered in the same branch/PR #21974
• Drop support for old experimental in community-build #21729

Coverage

• Fix coverage serialization when encountering macro suspension #22303

Dependencies

• Sbt 1.10.5 (was 1.9.9) #20157
• Scala 2.13.16 (was .15) #22386

Desugaring

• Fix #22051: only trust the type application part for case class unapplies #22099

Documentation

• Fix: typo in documentation for Tuple.zip #22313
• Copyright 2025 #22326
• Documentation only: update Example code linked to obsolete content in macros-spec.md #22256
• Doc fix, removed repeated use of the word with #21915
• Fix typos #21913

Enums

• Add type parameters derived from enum to default param getters of enum cases #22157

Extension Methods

• Add regression test for #22320 #22321
• Tweak ExtensionNullifiedByMember #22268

Infrastructure

• Improve, document and group versioning code in Build.scala #21837
• Fix: drop jackson-module-scala from CB #22353
• Fix inductive-implicits benchmark #22007
• Remove tests/pos-with-compiler-cc from VSCode ignored files #22198
• Bump webrick from 1.8.2 to 1.9.1 in /docs/_spec #22066
• Fix Windows OS detection in TraceNameManglingTest #21937
• Don't warn for deprecated Thread.getId() calls in ChromeTrace #21831
• Improvement: Remove workaround for Bloop and update docs #21842
• Ensure ChromeTraceTest event timestamps are emitted in correct invervals #21911
• Remove tests/pos-with-compiler-cc #21956
• Shade scalajs.ir under dotty.tools #21765

Implicits

• Rollback constraints in compareAppliedTypeParamRef #22339
• Apply implicit conversion from derived Conversion instance defined as implicit rather than given #21785

Imports

• Allow imports nested in packagings to shadow #21539

Inline

• Fix inline reduction for CaseDef guards with asInstanceOf #22305
• Avoid using the current denotation in NamedType.disambiguate #21414

Linting

• Append instead of prepending import selectors for the current scope when collecting them in CheckUnused #22314
• Allow discarding "Discarded non-Unit" warnings with : Unit #21927
• Disallow open modifier on objects #21922
• Only count associated files of direct members of package objects in dropStale #22190

Metaprogramming

• Rethrow SuspendExceptions caught in CodeGen phase #22009
• Extend compiletime.testing.typechecks with certain transform phases #21185

Match Types

• Fix #21841: Check more that an unapplySeq on a NonEmptyTuple is valid. #22366
• Type avoidance in MT bound inference #22142

Nullability

• Fix #21619: Refactor NotNullInfo to record every reference which is retracted once. #21624

Parser

• Fix: don't consider into as a soft-modifier #21924
• Fix: Allow as as an infix type in non context bound types #21849
• Undo patch of double-block apply #21982

Pattern Matching

• (Re-)Drop inaccessible subclasses from refineUsingParent #21930
• Fix #21914: Don't project nested wildcard patterns to nullable #21934
• Fix use of class terms in match analysis #21848
• Fix provablyDisjoint handling enum constants with mixins #21876
• Do not consider uninhabited constructors when performing exhaustive match checking #21750

Pickling

• Avoid orphan param from default arg #21824
• Make sure definition tree has the defined symbol #21851

Presentation Compiler

• Use new infer expected type for singleton complations #21421
• Fix presentation compiler testcases #22253
• Fix match error in keyword completions #22138
• Add test cases project for presentation compiler #22101
• Improvement: Update mtags to 1.4.1 and backport remaining changes #21859
• Backport changes for the presentation compiler from Metals #21756

Quotes

• Fix tupleTypeFromSeq for XXL tuples #21782
• Do not bring forward symbols created in transform and backend phases #21865
• Fix #20471: owners of top-level symbols in cached quoted code being incorrect #21945
• Fix for macro annotation that resolves macro-based implicit crashing the compiler #20353
• Allow macro annotations to recover from suspension #21969

REPL

• REPL: JLine: follow recommendation to use JNI, not JNA; also JLine 3.27.1 (was 3.27.0) #22205
• Fix #9879: allow top-level opaque type definitions in REPL #21753

Reflection

• Do not return java outline dummy constructor in primaryConstructor #22104

Reporting

• Normalise the types for Type Mismatch Error (E007) #22337
• Do not warn about expected missing positions in quotes.reflect.Symbol #21677
• Add missing error messages to asserts in QuotesImpl #21852
• Don't point to the compiler backlog when a compiler plugin phase crashes #21887
• Nowarn extension matching nonpublic member #21825
• Fix: better error messages when an enum derives from AnyVal #22236

Scaladoc

• [ISSUE-#19208] If scaladocs on file protocol don't do SPA routing. #22013
• Fix scaladoc graph highlight background color in dark mode #21814

SemanticDB

• Extract semanticDB for lifted definitions #21856

Specification

• Align the spec to allow the marker #22323
• Fix #202...

3.7.0-RC1

Highlights of the release

• Add @scala.annotation.internal.preview annotation and -preview flag. #22317
• Make SIP-52 @publicInBinary a stable feature in 3.7 #22591
• Make SIP-58 - Named Tuples a stable feature in 3.7 #22753
• Make SIP-62 - Better Fors a preview feature in 3.7 #22776
• Implement SIP-61 @unroll annotation as experimental #21693
• Implement SIP-68 Reference-able Package Objects as experimental #22011
• Upgrade Scala 2 Standard Library to 2.13.16 #22386
• Upgrade Scala.js to 1.18.1. #22397
• Upgrade Scala CLI to 1.7.0 #22735
• Expression Compiler is now part of Scala 3 compiler #22597
• Quotes API: Added apply methods to import selectors #22457
• Quotes API: Implement experimental summonIgnoring method #22417
• Quotes API: Add class parameters, flags, and privateWithin and annotations to experimental newClass methods #21880
• Experimental: Capture Calculus - Inferring tracked modifier #21628
• Presentation Compiler: Show inferred type on holes in hover #21423
• JVM Backend: Fix #15736 blocking Scala 3 on Android #22632
• REPL: add flag to quit after evaluating init script #22636
• REPL: implement :jar (deprecate :require) #22343
• Linting: Improvements to -Wunused and -Wconf #20894
• Implicit parameters warn at call site without using keyword #22441
• Minimal support for dependent case classes #21698

Other changes and fixes

Annotations

• Lift arguments of explicitly constructed annotations #22553
• Fix copy of annotation on @main methods #22582
• @publicInBinary has now effect on secondary constructors #22630
• Fix mapping of annotations #22407

Backend: Scala.js

• Emit js.NewArray IR nodes when possible. #22446

Classpath

• Fix empty ClassPath attribute in one or more classpath jars causes crash #22462

Documentation

• Improve the usage of inclusive language #22360

Erasure

• Handle type aliases in contextFunctionResultTypeAfter #21517
• Align erasure of Array[Nothing] and Array[Null] with Scala 2 #22517

Desugering

• Under betterFors don't drop the trailing map if it would result in a different type (also drop _ => ()) #22619

Experimental: Capture Checking

• Canonicalize capture variable subtype comparisons #22299
• Permit Capture Refs for Uninitialized Type and Term Params in BiTypeMap #22451
• Fix maximal capability handling and expand aliases #22341

Experimental: Modularity

• Widen skolem types when adding parent refinements #22488

Experimental: Global Initialization Checker

• Refactor the abstract domain of global init checker to compile http4s #22179
• Fix global init checking crash when using a value defined in by-name closure #22625

Experimentals

• Expand value references to packages to their underlying package objects #22011

Implicits

• Restrict implicit args to using #22458

Linting

• Suppress spurious Suppression #22383
• CheckUnused checks span.exists before testing its parts #22504
• Don't warn retainedBody #22510
• Handle Typeable #22663
• Nowarn public implicit val class params #22664
• Exclude synthetic this.m, Any.m from import lookup #22695
• Warn unused member of anonymous class #22729
• Ignore params to default arg getters #22749
• Lazy val def member is pattern var #22750
• Restore resolving prefixes of implicit Ident #22751
• No warning for parameter of overriding method #22757
• Dealias before checking for member in lint #22708
• Warn on bad extensions of aliases #22362
• Warn universal extensions on opaque types #22502
• Discourage default arg for extension receiver #22492
• Rename on import is never wildcard #22712
• Collect nowarn symbols instead of skipping them #22766

Match Types

• Handle NoType in TypeComparer.disjointnessBoundary #21520

Named Tuples

• Special case NamedTuple.From for arguments derived from Tuple #22449
• Generate mirrors for named tuples #22469

Opaque Types

• Fix stack overflow errors when generating opaque type proxies #22479
• Fix inline proxy generation for opaque types referencing other opaque types #22381
• Fix opaque types leaking rhs when inlined and found in type params (and a related stale symbol issue) #22655

Overloading

• Make overload pruning based on result types less aggressive #21744

Parser

• Fix annotations being not expected in the middle of an array type by java parser #22391
• No outdent at eof #22435
• Allow observing an indent after conditional #22611
• Correctly detect colon lambda eol indent for optional brace of argument #22477

Pattern Matching

• Avoid crash in uninhab check in Space #22601
• Account for named tuples in space subtraction #22658
• Check exhaustivity of any case class #22604

Presentation Compiler

• Add enum type param support in sourceSymbol #18603
• Map name position to desugared version of named context bound #22374
• Hover and go to definition for named tuples #22202
• Completions: do not complete package #20532
• Print parens for single method argument only if a direct tuple type #21510
• Improvement: use heuristic to figure out nameSpan if pointDelta too big #22484
• Fix inferredTypeEdits for symbols #22485
• Fix: Only fallback to the definition of a synthetic valdef if it is zero extent #22551
• Better LSP completions inside of backticks #22555
• Don't search for members in pc info when irrelevant #22674
• Backport from Metals #22426
• Backport from Metals #22491
• Backport from Metals #22665

Runner

• Upgrade Scala CLI to 1.7.0 highlights
  • Switch to scalameta/scalafmt images of scalafmt 3.9.1+ #3502
  • Support the --test command line option for run subcommand #3519
  • Support the --test command line option for package subcommand #3519
  • Detect objects with main class in scripts #3479
  • ...

3.6.4

Highlights of the release

• Support for JDK 24 #22250
• REPL :silent command to toggle automatic printing of outputs #22248
• REPL --repl-init-script: setting to run a code on startup #22206
• Deprecated setting -Xno-decode-stacktraces is now an alias to -Xno-enrich-error-messages #22208
• Annotation arguments are no longer lifted #22035
• Experimental Capture Checking: Implement tracked members #21761

Breaking changes

• Align @implicitNotFound and @implicitAmbigous with the language specification #22371

  This change may impact users who previously used these annotations using variables or string interpolation.

  Previously, a bug in the Scala 3 compiler allowed non-literal strings to be passed as arguments to the @implicitNotFound and @implicitAmbiguous annotations.
  This could have affected how failed implicit search results were reported by the compiler.

  Starting from Scala 3.6.4, the arguments for these annotations must be string literals.
  If a message is too long, it can be concatenated using the + operator, allowing for constant folding.

Other changes and fixes

Annotations

• Make sure symbols in annotation trees are fresh before pickling #22002
• Consider all arguments in Annotations.refersToParamOf #22001
• Do not lift annotation arguments (bis) #22046

Desugaring

• Fix #22051: only trust the type application part for case class unapplies #22099

Documentation

• Update example code linked to obsolete content in macros-spec.md #22256

Experimental: Capture Checking

• Fix #21868, #21869, and #21870: handle CapsOf in more places #21875
• Refine rules for capture parameters and members #22000
• Add a hint for using CC with REPL #22220
• Consolidate CC #21863

Experimental: Global Initialization

• Fix crash when initializing val in ByName closure #22354

Experimental: Named Tuples

• Handle TypeProxy of Named Tuples in unapply #22325
• Fail more eagerly when trying to adapt named unapply patterns #22315
• Widen singleton types when computing fields from .Fields #22149
• Fix .toTuple insertion #22028

Extension Methods

• Tweak ExtensionNullifiedByMember #22268
• Nowarn extension matching nonpublic member #21825

Implicits

• Rollback constraints in compareAppliedTypeParamRef #22339
• Try implicit searching after finding dynamic select #22318

Linting

• Allow discarding "Discarded non-Unit" warnings with : Unit #21927

Match Types

• Fix #21841: Check more that an unapplySeq on a NonEmptyTuple is valid. #22366
• Type avoidance in MT bound inference #22142

Metaprogramming

• Rethrow SuspendExceptions caught in CodeGen phase #22009

Metaprogramming: Compile-time

• Extend compiletime.testing.typechecks with certain transform phases #21185

Nullability

• Fix #21619: Refactor NotNullInfo to record every reference which is retracted once. #21624

Presentation Compiler

• Use new infer expected type for singleton complations #21421
• Fix match error in keyword completions #22138

Reflection

• Do not return java outline dummy constructor in primaryConstructor #22104

Reporting

• Normalise the types for Type Mismatch Error (E007) #22337
• Improve given search preference warning #22189
• Better error messages when an enum derives from AnyVal #22236
• Correctly print litteral types in the refined printer #22351

Rewrites

• Undo patch of double-block apply #21982

Scaladoc

• Scaladoc: Add support for named tuples #22263

Settings

• Limit exposure to ConcurrentModificationException when sys props are replaced or mutated #22180

Specification

• Align the spec to allow the marker #22323
• Integrate the specification for match types. #22164

Transform

• Fix #22226: Use classOf[BoxedUnit] for Unit array in ArrayConstructors. #22238

Typer

• Fixes for isLegalPrefix change #22241
• Resolve name when named imp is behind wild imps #21888

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.6.3..3.6.4 these are:

    46  Martin Odersky
    33  noti0na1
    24  Wojciech Mazur
    14  Dale Wijnand
    13  Matt Bovel
    11  Hamza Remmal
     7  Jan Chyb
     6  aherlihy
     5  Kacper Korban
     5  Seth Tisue
     5  Som Snytt
     4  Oliver Bračevac
     4  Yichen Xu
     3  Sébastien Doeraene
     3  dependabot[bot]
     3  kasiaMarek
     2  João Ferreira
     1  David Hua
     1  Eugene Flesselle
     1  Eugene Yokota
     1  Florian3k
     1  Jędrzej Rochala
     1  Kenji Yoshida
     1  Mathias
     1  Natsu Kagami
     1  Oleg Zenzin
     1  Piotr Chabelski
     1  Rui Chen
     1  philippus
     1  rochala
     1  xiaoshihou

3.6.4-RC2

Reverted changes

• Revert "Drop phase.isTyper use in isLegalPrefix/asf" from Scala 3.6.4 #22653

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.6.4-RC1..3.6.4-RC2 these are:

     5  Wojciech Mazur

3.3.5

Highlights of the release

• Use Scala 2.13.15 standard library #21648
• Support JDK 23 #20144
• Add the -Wall option that enables all warnings #20577

Breaking changes

• Aligned -Wconf parsing order with Scala 2 semantics: -Wconf:x,y now means -Wconf:x -Wconf:y, with y overruling x, rather than the reverse to align with Scala 3.4+ and with user intuition #21985

Other changes and fixes

Annotations

• Tighten java annot value parsing #21650

Exports

• Re-use attachment in exportForwarders to handle ambiguous overloads #21518
• Allow export statements in AnyVal #21653

Extension Methods

• Make right assoc ext method fwd refs error #21641

Inference

• Fix #20521: Optimise caching for computing atoms and widened in OrTypes #21223

Linting

• Add origin filter to WConf, DeprecationWarning #21404
• CheckUnused checks type param annotations #20549

Match Types

• Fix #20897: Make Nothing ⋔ Nothing, as per spec. #21241
• Always interpret underscores inside patterns as type bounds #21718

Overloading

• Report only non-overridden unimplemented members #21337

Parser

• Harden skip in Scanner #21607
• SimplePattern errors should now be recovered as wildcard instead of unimplemented expr #21438

Positions

• Fix trailing comma Ident's span #20445

Presentation Compiler

• Fix autoimports with using directives #21590
• Remove artificial CURSOR added to code in the completions #20899
• Help implement Metals' infer expected type feature #21390
• Weekly metals backport #21343
• Change mock symbol search #21296
• Fix: completions when parenthesis already provided #21299
• Backport from metals #21196
• Fix: don't add suffix if brackets already present #21259

Quotes

• Handle suspension due to macro call in arbitrary phases #21651
• Have a better error message when healing types #21711
• Expr#show: Don't crash when the expression contains an unsupported type (like a SkolemType) #20494
• Quotes type printing: take infix type modifier into account #21726

Reporting

• Nicer error message in case a derived method has an explicit term param #21332
• Add better error reporting for inlined non-immutable paths #21639

Releases

• Add support for Chocolatey #20534
• Add the merge commit hash to the icon's url #21221
• Add sources of synthetic classes to sources jar #20904

REPL

• Uppdate JLine to 3.27.0 (was 3.25.1) #21752
• Allow JLine to fall back to a dumb terminal #21330
• JLine: follow recommendation to use JNI, not JNA; also JLine 3.27.1 (was 3.27.0) #22205

Runner

• Fix old scala runner to use correct JLine classpath #22464
• Fix remaining JNA classpath entries in dist/bin/scaladoc* scripts #22471

Scaladoc

• Only trim one newline when preprocessing the content of a markdown code snippet #21519
• Bump Inkuire version to fix it for the new Scala versions #21611
• Filter opaque modifier from object documentation #21640

TASTy format

• Add child to parent in completion context #21214

Transform

• Three fixes to SAM type handling #21596
• Fix treatment of separately compiled @native methods in FirstTransform #21593
• Fix #20856: Serialize Waiting and Evaluating as if null. #21243
• Fixes IllegalAccessError with Java package protected class #21362
• Consistently use TypeMismatch in TreeChecker #21529
• Fix: don't use color codes for pattern match code action #21120
• Let show behave more robustly for Recheck #21678
• Always rewrite empty List() to Nil #21689

Typer

• Fix extending protected nested java classes #21857
• Avoid cyclic errors forcing default arg types #21597
• Survive inaccessible types when computing implicit scope #21589
• Revert "Drop redundant butNot = Param clause in isAnchor" #21566
• Fail early & more clearly on shaded-broken classfiles #21262
• Fix isomorphism tests of AndOrTypes under non-empty BinderPairs #21017
• Some fixes for AnnotatedTypes mapping #19957
• Simple performance improvement for Denotations #21584
• Avoid import suggestion thread hang if -Ximport-suggestion-timeout <= 1 #21434
• Fix incorrect caching with dependent method parameters #21699

Experimental: Explicit Nulls

• Add tracking of NotNullInfo for Match, Case, Try trees (fix #21380) #21389
• Fix #21392: Adjust canComparePredefined(Nothing, T) in explicit nulls #21504

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.3.4..3.3.5-RC1 these are:

    56  Wojciech Mazur
    14  Dale Wijnand
    10  Katarzyna Marek
     8  rochala
     5  Hamza Remmal
     5  noti0na1
     4  Matt Bovel
     4  Seth Tisue
     4  Som Snytt
     3  Jamie Thompson
     3  Martin Odersky
     3  Michał Pałka
     3  dependabot[bot]
     3  kasiaMarek
     2  Aleksander Rainko
     2  Eugene Flesselle
     2  Florian3k
     2  HarrisL2
     2  Jędrzej Rochala
     2  Kacper Korban
     2  Yichen Xu
     1  Eugene Yokota
     1  Guillaume Martres
     1  Hamza REMMAL
     1  Jan Chyb
     1  Joel Wilsson
     1  Kenji Yoshida
     1  Martin Duhem
     1  Nicolas Stucki
     1  Ondrej Lhotak
     1  Sébastien Doeraene
     1  Tomasz Godzik

3.3.5-RC3

Backported fixes

• Fix synchronization of -java-output-versions with JVM backend #22403

Contributors

Thank you to all theq contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.3.5-RC2..3.3.5-RC3 these are:

     3  Wojciech Mazur

3.6.4-RC1

Highlights of the release

• Add REPL init script setting #22206
• Support for JDK 24 #22250
• Merge -Xno-decode-stacktraces with -Xno-enrich-error-messages #22208
• Do not lift annotation arguments #22035

Other changes and fixes

Annotations

• Make sure symbols in annotation trees are fresh before pickling #22002
• Consider all arguments in Annotations.refersToParamOf #22001
• Do not lift annotation arguments (bis) #22046

Desugaring

• Fix #22051: only trust the type application part for case class unapplies #22099

Documentation

• Update example code linked to obsolete content in macros-spec.md #22256

Experimental: Capture Checking

• Fix #21868, #21869, and #21870: handle CapsOf in more places #21875
• Refine rules for capture parameters and members #22000
• Add a hint for using CC with REPL #22220
• Consolidate CC #21863

Experimental: Global Initialization

• Fix crash when initializing val in ByName closure #22354

Experimental: Named Tuples

• Handle TypeProxy of Named Tuples in unapply #22325
• Fail more eagerly when trying to adapt named unapply patterns #22315
• Widen singleton types when computing fields from .Fields #22149
• Fix .toTuple insertion #22028

Extension Methods

• Tweak ExtensionNullifiedByMember #22268
• Nowarn extension matching nonpublic member #21825

Implicits

• Rollback constraints in compareAppliedTypeParamRef #22339
• Try implicit searching after finding dynamic select #22318

Inline

• Drop phase.isTyper use in isLegalPrefix/asf #21954

Linting

• Allow discarding "Discarded non-Unit" warnings with : Unit #21927

Match Types

• Fix #21841: Check more that an unapplySeq on a NonEmptyTuple is valid. #22366
• Type avoidance in MT bound inference #22142

Metaprogramming

• Rethrow SuspendExceptions caught in CodeGen phase #22009

Metaprogramming: Compile-time

• Extend compiletime.testing.typechecks with certain transform phases #21185

Nullability

• Fix #21619: Refactor NotNullInfo to record every reference which is retracted once. #21624

Presentation Compiler

• Use new infer expected type for singleton complations #21421
• Fix match error in keyword completions #22138

Reflection

• Do not return java outline dummy constructor in primaryConstructor #22104

Reporting

• Normalise the types for Type Mismatch Error (E007) #22337
• Improve given search preference warning #22189
• Better error messages when an enum derives from AnyVal #22236
• Correctly print litteral types in the refined printer #22351

Rewrites

• Undo patch of double-block apply #21982

Scaladoc

• Scaladoc: Add support for named tuples #22263

Settings

• Limit exposure to ConcurrentModificationException when sys props are replaced or mutated #22180

Specification

• Align the spec to allow the marker #22323
• Integrate the specification for match types. #22164

Transform

• Fix #22226: Use classOf[BoxedUnit] for Unit array in ArrayConstructors. #22238

Typer

• Fixes for isLegalPrefix change #22241
• Resolve name when named imp is behind wild imps #21888

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.6.3..3.6.4-RC1 these are:

    46  Martin Odersky
    33  noti0na1
    17  Wojciech Mazur
    14  Dale Wijnand
    13  Matt Bovel
    11  Hamza Remmal
     7  Jan Chyb
     6  aherlihy
     5  Kacper Korban
     5  Seth Tisue
     5  Som Snytt
     4  Oliver Bračevac
     4  Yichen Xu
     3  Sébastien Doeraene
     3  dependabot[bot]
     3  kasiaMarek
     2  João Ferreira
     1  David Hua
     1  Eugene Flesselle
     1  Eugene Yokota
     1  Florian3k
     1  Jędrzej Rochala
     1  Kenji Yoshida
     1  Mathias
     1  Natsu Kagami
     1  Oleg Zenzin
     1  Piotr Chabelski
     1  Rui Chen
     1  philippus
     1  rochala
     1  xiaoshihou

3.3.5-RC2

Backported fixes

• Backport "REPL: JLine: follow recommendation to use JNI, not JNA; also JLine 3.27.1 (was 3.27.0)" to LTS #22377

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.3.5-RC1..3.3.5-RC2 these are:

     5  Wojciech Mazur
     3  Seth Tisue
     1  Hamza Remmal

3.6.3

Highlights of the release

• Scala 2 forwardport: -Yprofile-trace #19897

Other changes and fixes

Annotations

• Fix Java parsing of annotations on qualified types #21867
• Consider all arguments in Annotations.refersToParamOf #22001

Backend

• Flag class file collision as error #19332

Compiler Phases

• Fix #21939: Update names and descriptions for cc and setup phases #21942
• Limit exposure to ConcurrentModificationException when sys props are replaced or mutated #22275

Experimental: Explicit Nulls

• Improve warning for wildcard matching only null under the explicit nulls flag (scala#21577) #21623
• Fix warning message for matching on redundant nulls #21850

Experimental: Capture Checking

• Fix #21868, #21869, and #21870: handle CapsOf in more places #21875
• Consolidate CC #21863
• Add path support for capture checking #21445

Experimentals

• Replace symbol traversal with tree traversal when finding top level experimentals #21827

Extension Methods

• Nowarn extension matching nonpublic member #21825

Implicits

• Apply implicit conversion from derived Conversion instance defined as implicit rather than given #21785

Imports

• Allow imports nested in packagings to shadow #21539

Inline

• Avoid using the current denotation in NamedType.disambiguate #21414
• Drop phase.isTyper use in isLegalPrefix/asf #21954
• Fix for macro annotation that resolves macro-based implicit crashing the compiler #20353
• Allow macro annotations to recover from suspension #21969

Linting

• Disallow open modifier on objects #21922
• Allow discarding "Discarded non-Unit" warnings with : Unit #21927

Opaque Types

• Fix pkg obj prefix of opaque tp ext meth #21527

Parser

• Fix: don't consider into as a soft-modifier #21924

Pattern Matching

• Drop inaccessible subclasses from refineUsingParent #21799
• (Re-)Drop inaccessible subclasses from refineUsingParent #21930
• Fix use of class terms in match analysis #21848
• Don't project nested wildcard patterns to nullable #21934
• Fix provablyDisjoint handling enum constants with mixins #21876
• Do not consider uninhabited constructors when performing exhaustive match checking #21750

Presentation Compiler

• Update mtags to 1.4.1 and backport remaining changes #21859
• Backport changes for the presentation compiler from Metals #21756

Pickling

• Avoid orphan param from default arg #21824
• Make sure definition tree has the defined symbol #21851

REPL

• Allow top-level opaque type definitions in REPL #21753
• JLine: follow recommendation to use JNI, not JNA; also JLine 3.27.1 (was 3.27.0) #22271

Scaladoc

• Fix scaladoc TastyInspector regressions #21716
• Bring back the fix for scaladoc TastyInspector regressions #21929
• Fix scaladoc graph highlight background color in dark mode #21814

Standard Library

• Combine cases of Tuple.Zip disjoint from (h1 *: t1, h2 *: t2) #21287

Quotes

• Fix #20471: owners of top-level symbols in cached quoted code being incorrect #21945

Reporting

• Do not warn about expected missing positions in quotes.reflect.Symbol #21677
• Add missing error messages to asserts in QuotesImpl #21852
• Don't point to the compiler backlog when a compiler plugin phase crashes #21887
• Better error message for polytypes wrapping capturing types #21843
• Pretty-print lambdas #21846
• Nowarn extension matching nonpublic member #22276
• Refactor: Improve Given search preference warning #22273

Runner

• Fix: update scala-cli.jar path #22274

Releases

• Fix layout of released SDK archives, restore intermiediete top-level directory #22272

Scala.js

• Shade scalajs.ir under dotty.tools #21765

SemanticDB

• Extract semanticDB for lifted definitions #21856

Transform

• Fix enclosingClass from returning refinement classes #21411
• Attempt to beta reduce only if parameters and arguments have same shape #21970
• Drop copied parent refinements before generating bytecode #21733

Tooling

• Ensure to escape characters before constructing JSON profile trace #21872

Tuples

• Fix tupleTypeFromSeq for XXL tuples #21782

Typer

• Do not crash when typing a closure with unknown type, since it can occur for erroneous input #21178
• Revert SAM condition to what it was before #21684
• Fix ctx implicits under case unapplySeq #21748
• Avoid erasure/preErasure issues around Any in transformIsInstanceOf #21647

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.6.2..3.6.3 these are:

    33  Wojciech Mazur
    30  Dale Wijnand
    30  Kacper Korban
    14  noti0na1
    11  Hamza Remmal
    10  Eugene Flesselle
    10  HarrisL2
     9  Martin Odersky
     8  Matt Bovel
     7  Jan Chyb
     6  Tomasz Godzik
     5  Seth Tisue
     4  Jamie Thompson
     2  Friendseeker
     2  João Ferreira
     2  Pascal Weisenburger
     2  Som Snytt
     2  Sébastien Doeraene
     1  Adrien Piquerez
     1  Alden Torres
     1  Alexander
     1  Eugene Yokota
     1  Fengyun Liu
     1  Georgi Krastev
     1  Jentsch
     1  Lunfu Zhong
     1  Michał Pałka
     1  Natsu Kagami
     1  Rui Chen
     1  dependabot[bot]
     1  friendseeker
     1  tgodzik

3.6.3-RC2

Backported fixes

• Fix: update scala-cli.jar path #22274
• Nowarn extension matching nonpublic member #22276
• Limit exposure to ConcurrentModificationException when sys props are replaced or mutated #22275
• Refactor: Improve Given search preference warning #22273
• Fix layout of released SDK archives, restore intermediate top-level directory #22272
• REPL: JLine: follow recommendation to use JNI, not JNA; also JLine 3.27.1 (was 3.27.0) #22271

Contributors

Thank you to all the contributors who made this release possible 🎉

According to git shortlog -sn --no-merges 3.6.3-RC1..3.6.3-RC2 these are:

     4  Wojciech Mazur
     2  João Ferreira
     2  Seth Tisue
     2  Som Snytt
     1  Eugene Yokota
     1  Hamza Remmal
     1  Rui Chen