3.8.3-RC1

Release highlights

• Add support for local coverage on and off with // $COVERAGE-OFF$ and // $COVERAGE-ON$ #24486
• Deprecate for removal -print-lines compiler setting #25330

Other changes and fixes

Desugaring

• Fix #24997: Avoid unnecessary CHECKCAST in untupled function parameters #25085

Documentation

• Fix little errors in the API documentation #25241
• CC Language Reference: Rename cap to any/fresh #25057

Enums

• Deprecate override class, improve checks #24828
• Fix Java enum forwarders to pull from companion on initialization #24361

Experimental: Capture Checking

• Rename caps.cap to caps.any #24923
• Track global capabilities #24883
• Treat local mutable vars as capabilities #24815
• Fix Crashes when Capture-set Parameters Conflict with Terms #25029
• Replace "cannot be included in" by "cannot flow into" in error messages #25155
• CC: Add field captures to self-type constraints #24984
• Add uses clauses for templates #24857
• Drop special code paths for objects #24881
• Do not consider generated getters to be update def #24906
• Under cc, mark inferred type arguments to inline methods with an @inferred annotation #25175
• Handle call-by-name types in bad locations under cc #25154
• Fixes for global capabilities #25123
• Warn if reach capability in result will likely cause leakage #24860
• Make <fluid> decorations replace existing capture sets #25012
• Make TypeMaps in Setup work correctly for fresh #24985
• For a limited time, also recognize caps.cap #25076
• Fix closure typing #25014
• Map class capture sets via as-seen-from with prefix of created types #24830

Experimental: Modularity

• Fix nested desugaring of applied constructor types #25288

Exports

• Add ctor proxies before exports #24884

Inline

• Make containsOuterRefsAnywhere follow aliases #25214
• Find annotation args in inline expansion #24895
• Also substitute symbols in case bindings symbols #24849

JDK

• Skip over JEP 445 compact compilation units #23247
• Handle MissingType during Erasure phase #24817

JVM Backend

• Simplify JVM interface list emission, remove a mini-phase #25203
• Don't generate bridge methods for inaccessible Java package-private methods #25166
• Revise isLocalToCompilationUnit #24856

Linting

• Extension check handles hiBound of opaque type #25172
• Distrust tree pos for patvar lint #25043
• Move second CheckUnused after pattern matcher #25114
• Unused lint ignores args to ctor of enclosing class #24768
• Check inline expansion for exclusion #23019

Metaprogramming

• Fix: Fix incremental compilation of (some unquoted) macros #24969

Named Tuples

• Don't try checking for ambiguous single-element tuples when in types #24910
• Fix "NamedTuple type in match is parsed as named pattern" #24929
• Fix "Named pattern matching doesn't work in val statements or for generators" #24928
• Fix false exhaustivity warning for pattern returning NamedTuple #23362

Overloading

• Prefer non-extension to extension #24943

Parser

• Check seen for TypeParamRef in TypeSizeAccumulator #25264
• End of new expr never shrinks #25253
• Use toVector for XML literal sequences #23221

Pattern Matching

• Emit unchecked warnings for trait patterns #24962

Presentation Compiler

• Bugfix: inline value false-positive shadowing with lambda params #25140
• Test hover on backticked identifiers with whitespace #25142
• Inlining interpolated variables #25144
• Bugfix: treat self types as parent types #25167
• Feat(pc): add closing labels inlay hints #25178
• Coursier dependency imports should have lexicographic ordering #21592
• Bugfix: Fix various minor presentation compiler issues #25256
• Fix negative activeParameter in signature help #24945
• Closes #7532: Parameter hints not working for functions #23854
• Fix opaque types displayed as Nothing & Any in hover and signature help #24921

REPL

• Skip module-info.class files during REPL tab-completion #24838
• Fix REPL usage of macros loaded via :dep and :jar #25312
• Make REPL type echo-ing use partially qualified names where made possible by imports #24850

Reporting

• Check -Werror on summarize #25096
• Fixes #24233: Remove misleading JDK compatibility hint for TASTy errors #25171
• Ignore resetting if preferPrevious #24991
• Enhance WInferUnion to not warn propagated explicit union types #25280
• Improve diagnostic message for unnecessary trailing underscore in eta-expansion #25285
• More descriptive "not found" message when type/term exists with the expected term/type name #24959
• Warn on Scala 2 auto-apply if loosely nullary #24811
• Fix printing references to nested objects #25086
• Add error note for type mismatch involving blocks without last expression #25181
• Drop -print-lines option #24905
• Don't suggest invisible members of root imports #24999

Rewrites

• Accommodate ArrowAssoc in infix named arg migration #25255

Scaladoc

• Init MacroClassLoader in scaladoc #25141
• Scaladoc Overload Method Link Fix #25156
• Fix duplicate member entries in Scaladoc generation #24712
• Scaladoc Tests for CC #25277
• Skip generation of API pages when building reference docs #25153

Standard Library

• Remove incorrect equals implementations from ArrayBuilder #25205
• Use StringBuilder intead of StringBuffer in Regex #24576
• Update StringOps.* implementation #24786

Tooling

• Fix behavior of -Ydump-sbt-inc #25125

Typer

• Never widen constant type on selector type in matches #25197

Quotes

• Fix #25208: handle AndType(TermRef, TypeRef) in TreeUnpickler path trees #25209

Contributors

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

According to git shortlog -sn --no-merges 3.8.2..3.8.3-RC1 these are:

    80	Martin Odersky
    46	Wojciech Mazur
    26	Som Snytt
    11	Li Haoyi
    10	Tomasz G...

3.8.2

Highlights of the release

• Warn if for with many vals and overloaded map #25090
• Support :dep ... to add library dependencies in the Scala REPL #24131
• Upgrade to Scala.js 1.20.2. #24898
• Bump Scala CLI to v1.12.2 (was 1.11.0) #25217:
  • New aliases for RC and nightly Scala versions
  • Detailed changelog available in scala-cli release notes for versions: v1.12.0, v1.12.1 and v1.12.2

Other changes and fixes

Context Functions

• Inferred Contextual params are less nameable #24381

Desugaring

• A comprehension with valdef aliases is never a candidate for map elimination. #23448

Experimental: Capture Checking

• Capture Checking of Lazy Vals #24261
• Represent read-only with a classifier #24295
• Fix typing closure blocks where result type refers to a closure parameter. #24299
• Systematically recompute denotations when needed in rechecker phases #24302
• Ensure that read-only methods don't use exclusive capabilities #24311
• Handle capture parameters in dcs #24328
• Don't prematurely force info of fields with inferred types #24336
• Disallow fresh caps from parameter bounds in results #24541
• Avoid box failures and better diagnosis if they come back #24546
• Freshen all explicit arguments of type applications #24354
• Optimize and harden isCaptureChecking tests #24439
• Add Unscoped classifier #24470
• Optimization: Introduce CompactAnnotation #24679

Experimental: Seperation Checking

• Changes to Mutable #24352
• Don't crash when update is used as a modifier outside cc #24378
• Imply update only for consume methods in Mutable classes #24383
• Decompose Mutable #24495
• Add freeze wrapper (2) #24518
• Make Arrays mutable types under separation checking #24649

Experimental: Explcit Nulls

• Relax flow typing checks on Flexible Types #24278
• Do not expose flexible types #24292
• Do not search contextual function type in union types in general #24393
• Add jspecify NonNull annotation to NotNullAnnots list #24487
• Recognize Nullable annotations in explicit nulls #25237

Experimental: Global Initialization

• Global object init checker gives warning when accessing an object before its super constructor finishes #24349

Annotations

• Accommodate adapted Scala 2 annotation value #17516
• Harden Annotation.refersToParamOf #24647
• Do not allow @targetName on primary constructor too #24682

Coverage

• Fix issues with Scala.js and coverage #24769
• Make coverage support incremental compilation #24773
• Improvement: Try to optimize coverage phase #24925

Enums

• Lint enum case in outer context #24652

Exports

• Preserve select of exported member in newExpr #24570

Erasure

• Fix isJvmAccessible to handle nested protected Java classes #24625

Inline

• Allow references to erased values in types #24421
• Cast inline call results to result type, not method type #25111
• Fix "Compiler crash when calling another file's inline def that uses a private constructor" #24941

Implicits

• Avoid more constraints in result if trying views #24369

Initialization

• Skip caret when source is missing in initialization checker #23926

JVM Backend

• Preserve singleton types for final val aliases to Java enum constants #24980

Linting

• Suppression matches inlined positions #24092
• Wshadow option recognizes Wall #24469

Nullability

• Record NotNullInfo for exceptional try-catch #24320

Overloading

• Ignore selection prototypes when typing type applications #24489
• Fix varargs overload resolution with wildcard types #24669
• Fix override checking for Java methods with covariant array #24408

Parser

• Permit new with trivial end #24331
• Single line case lambda gets a region #24497
• Error tree on outdent is zero extent #23796

Pattern Matching

• Fix false exhaustivity for GADT under separate compilation #23966

Presentation Compiler

• Create extension method in infer method action #24721
• Exclude XRayModeHint for synthetics #24722
• Fix incorrect XRay hint #24738
• Improve multi-line code message rendering #24723
• Improvement: Allow passing -explain to the presentation compiler #24740
• Handle inlined tree in implicit parameter inlay hints #24762

REPL

• Improve REPL code, echo and exception highlighting with pprint and fansi #24298
• Replace REPL signal handling with raw mode jline terminal to make Ctrl-C handling work when REPL is a child process #24842
• Fix "Colon as operator part at beginning of line in REPL" #24942
• Fix "REPL dependency on scala-parallel-collections doesn't work" #25064
• Fix "Still can't use scala-parallel-collections in REPL via :dep" #25092

Reporting

• Addendum when apply error involves default arg #21133
• Forward reference error includes line numbers #22534
• Improve error messages for scope extrusion errors #24318
• Use a better span for an anonymous class #24640
• Add ErrorMessageID to -Winfer-union warnings (#25073) #25249

Scaladoc

• Allow to additional scalacOptions in Markdown code snippets #24755

Standard Library

• Enable capture checking on Tuple #24345
• Update StringOps.padTo implementation #24575
• Use String.repeat in scala.io.Source #24594
• Ensure stability of IArray.tapEach #24727

TASTy

• Pickle CompactAnnotations as regular annotations #25213
• Drop spurious applies in unpickler and inliner #25201

Transform

• Adjust purity of trait with lazy member #23788

Tuples

• Fix inconsistent typeSize calculation for TupleN vs recursive pair encodings #24743

Typer

• Dealias type of type constructor in typedAppliedTypeTree #24522
• Improve TypeVar instantiation logic #24697
• Try to instantiate TypeVars inside pt when possible #24231
• Error instead of crash when generating trees referring to skolem...

3.8.2-RC3

Backported chnages

• Add ErrorMessageID to -Winfer-union warnings (#25073) #25249
• Warn if for with many vals and overloaded map #25090
• Recognize Nullable annotations in explicit nulls #25237

Contributors

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

According to git shortlog -sn --no-merges 3.8.2-RC2..3.8.2-RC3 these are:

     3  noti0na1
     3  Wojciech Mazur
     1  Som Snytt

3.8.2-RC2

Backported chnages

• Bump Scala CLI to v1.12.2 (was v1.11.0) & coursier to 2.1.25-M23 (was 2.1.25-M21) #25217
• Pickle CompactAnnotations as regular annotations #25213
• Drop spurious applies in unpickler and inliner #25201
• Preserve singleton types for final val aliases to Java enum constants #24980
• Avoid NPE when calling hashCode on a value class wrapping null #25110
• Cast inline call results to result type, not method type #25111
• Fix "Compiler crash when calling another file's inline def that uses a private constructor" #24941
• Fix "REPL dependency on scala-parallel-collections doesn't work" #25064
• Fix "Still can't use scala-parallel-collections in REPL via :dep" #25092

Contributors

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

According to git shortlog -sn --no-merges 3.8.2-RC1..3.8.2-RC2 these are:

     7 Wojciech Mazur
     2 Li Haoyi
     2 Martin Odersky
     1 Lukas Rytz
     1 Matt Bovel
     1 Som Snytt

3.8.2-RC1

Highlights of the release

• Support :dep ... to add library dependencies in the Scala REPL, add helpful message to //> using dep "..." #24131
• Warn if type argument was inferred as union type #24258
• Upgrade to Scala.js 1.20.2. #24898

Other changes and fixes

Context Functions

• Inferred Contextual params are less nameable #24381

Desugaring

• A comprehension with valdef aliases is never a candidate for map elimination. #23448

Experimental: Capture Checking

• Capture Checking of Lazy Vals #24261
• Represent read-only with a classifier #24295
• Fix typing closure blocks where result type refers to a closure parameter. #24299
• Systematically recompute denotations when needed in rechecker phases #24302
• Ensure that read-only methods don't use exclusive capabilities #24311
• Handle capture parameters in dcs #24328
• Don't prematurely force info of fields with inferred types #24336
• Disallow fresh caps from parameter bounds in results #24541
• Avoid box failures and better diagnosis if they come back #24546
• Freshen all explicit arguments of type applications #24354
• Optimize and harden isCaptureChecking tests #24439
• Add Unscoped classifier #24470
• Optimization: Introduce CompactAnnotation #24679

Experimental: Seperation Checking

• Changes to Mutable #24352
• Don't crash when update is used as a modifier outside cc #24378
• Imply update only for consume methods in Mutable classes #24383
• Decompose Mutable #24495
• Add freeze wrapper (2) #24518
• Make Arrays mutable types under separation checking #24649

Experimental: Explcit Nulls

• Relax flow typing checks on Flexible Types #24278
• Do not expose flexible types #24292
• Do not search contextual function type in union types in general #24393
• Add jspecify NonNull annotation to NotNullAnnots list #24487

Experimental: Global Initialization

• Global object init checker gives warning when accessing an object before its super constructor finishes #24349

Annotations

• Accommodate adapted Scala 2 annotation value #17516
• Harden Annotation.refersToParamOf #24647
• Do not allow @targetName on primary constructor too #24682

Coverage

• Fix issues with Scala.js and coverage #24769
• Make coverage support incremental compilation #24773
• Improvement: Try to optimize coverage phase #24925

Enums

• Lint enum case in outer context #24652

Exports

• Preserve select of exported member in newExpr #24570

Erasure

• Fix isJvmAccessible to handle nested protected Java classes #24625

Inline

• Allow references to erased values in types #24421

Implicits

• Avoid more constraints in result if trying views #24369

Initialization

• Skip caret when source is missing in initialization checker #23926

Linting

• Suppression matches inlined positions #24092
• Wshadow option recognizes Wall #24469

Nullability

• Record NotNullInfo for exceptional try-catch #24320

Overloading

• Ignore selection prototypes when typing type applications #24489
• Fix varargs overload resolution with wildcard types #24669
• Fix override checking for Java methods with covariant array #24408

Parser

• Permit new with trivial end #24331
• Single line case lambda gets a region #24497
• Error tree on outdent is zero extent #23796

Pattern Matching

• Fix false exhaustivity for GADT under separate compilation #23966

Presentation Compiler

• Create extension method in infer method action #24721
• Exclude XRayModeHint for synthetics #24722
• Fix incorrect XRay hint #24738
• Improve multi-line code message rendering #24723
• Improvement: Allow passing -explain to the presentation compiler #24740
• Handle inlined tree in implicit parameter inlay hints #24762

REPL

• Improve REPL code, echo and exception highlighting with pprint and fansi #24298
• Replace REPL signal handling with raw mode jline terminal to make Ctrl-C handling work when REPL is a child process #24842
• Fix "Colon as operator part at beginning of line in REPL" #24942

Reporting

• Addendum when apply error involves default arg #21133
• Forward reference error includes line numbers #22534
• Improve error messages for scope extrusion errors #24318
• Use a better span for an anonymous class #24640

Scaladoc

• Allow to additional scalacOptions in Markdown code snippets #24755

Standard Library

• Enable capture checking on Tuple #24345
• Update StringOps.padTo implementation #24575
• Use String.repeat in scala.io.Source #24594
• Ensure stability of IArray.tapEach #24727

Transform

• Adjust purity of trait with lazy member #23788

Tuples

• Fix inconsistent typeSize calculation for TupleN vs recursive pair encodings #24743

Typer

• Dealias type of type constructor in typedAppliedTypeTree #24522
• Improve TypeVar instantiation logic #24697
• Try to instantiate TypeVars inside pt when possible #24231
• Error instead of crash when generating trees referring to skolems #24380
• Try to fix callee type inference in typedFunctionValue #24732
• Fix wildcardArgOK for mixed wildcard/concrete type args #25001

Union types

• Dealias in isSimpleThrowable check #24744

Quotes

• Make quotes.reflect.Position.ofMacroExpansion consider -Ymagic-offset-header #24301

Contributors

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

According to git shortlog -sn --no-merges 3.8.1..3.8.2-RC1 these are:

   101 Martin Odersky
    93 Hamza Remmal
    67 Wojciech Mazur
    34 Som Snytt
    24 noti0na1
    16 Rikito Taniguchi
     8 Oliver Bračevac
     7 Kenji Yoshida
     7 Li Haoyi
     7 Matt Bovel
     7 Natsu Kagami
     7 Tomasz Godzik
     7 Yichen Xu
     6 Jan Chyb
     6 Piotr Chabelski
     5 Zieliński Patryk
     5 dependabot[bot]
     4 HarrisL2
     3 Jamie Thompson
     3 Lukas Rytz
     2 Chua Chee Seng
     2 Fengyun Liu
     2 Guillaume Martres
     2 Lluc Santamaria Riba
     2 Sébastien Doeraene
     1 Alex1005a
     1 Bill Venners
     1 Emil Ejbyfeldt
     1 EnzeXing
     1 Evgeny Vereshchagin
     1 Jeon Yoonjae
     1 Lorenzo Gabriele
     1 Seth Tisue
     1 matsu-chara
     1 rjolly
     1 zielinsky
`...

3.8.1

Highlights of the release

Scala 3.8.1 is a hotfix release for 3.8.0.
It addresses runtime regressions found after the 3.8.0 artifacts were released, specifically JVM linkage errors affecting a small subset of Scala 2 specialized types and members.

Additional regressions

The following regressions still present in 3.8.1 will be addressed in a forthcoming 3.8.2 hotfix release:

• Some for comprehensions have incorrect behavior at runtime (#24673)
• Certain code involving calls to certain parts of the Java standard library fail to compile (#25133)

Cautious users may wish to wait for 3.8.2.

Fixed regressions

• Revert addition of new base trait to ReturnThrowable #24975
• Use uninlined version of Scala 2 standard-library in ScalaLibraryPlugin #25008
• Add missing specialized method in NumericRange #25020
• Correct the list of files to copy from Scala 2 #25033

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

3.8.0

Please use Scala 3.8.1
Version 3.8.0 was published with runtime regressions.

Highlights of the release

• Require JDK 17+ #24146
• Add explicit null checks to Scala 3 Standard Library #23566
• Add capture-checking to Scala 3 Standard Library #23688
• Add capture-checking to Scala 2 collections #23769
• Extract REPL to be its own artifact #24243
• SIP-57: Make runtimeChecked a standard feature #23262
• SIP-62: Make better-fors a stable feature #23630
• Preview SIP-71: Make into preview feature #24090
• Experimental SIP-67: Strict equality pattern matching #23803
• Experimental SIP-70: Allow multiple spreads in function arguments #23855
• Experimental SIP-75: Allow single-line lambdas after : #23821
• Experimental: Match if sub cases #23786
• Support JDK 26 #24430
• Make scala.caps.Pure non-experimental #23745
• Allow annotations to annotate themselves #24447
• Changed indicator for LTS/Next series indicator in pom.xml #24709

Other changes and fixes

Annotations

• Emit deprecation warnings when a symbol is annotated by a deprecated annotation #23906
• Deprecate scala.annotation.elidable #23913
• Deprecate scala.annotation.transparentTrait #23116

Experimental: Capture Checking

• Make scala.caps.Pure transparent #23914
• Make scala.caps.Capability non-experimental #23507
• Check conformance to scala.caps.Pure upper bound only under cc #23784
• Widen type parameters before box adaptation #23809
• Level checking: distinguish between certain capset vars with same owner #24077
• Implement FreshCap Handling for Classes and Objects #24136
• Skip capture sets in checkNoPrivateLeaks and drop them in posttyper when cc is not enabled #23886
• Changes around reaches and uses #23584
• Revise capability hierarchy and fix classifiers #23656
• Improve closure typing #23700
• Better printing of capabilities in error messages #23701
• More improvements to error messages #23721
• CC Language Ref Polishings #23762
• CC Language Reference Improvements v2 #23818
• Changes in CC around classes, constructors, this #23874
• Various fixes and simplifications #23881
• Simplify Level Checking and Fix Errors #23934
• Introduce precise refined types #24154
• Fix unsoundness in APPLY and SELECT rules #24159
• Fixes for mutability #24205
• Implement inheritance condition for Mutable types #24253
• Don't add cap when creating instances of capability classes. #24256
• Changes to Fresh and Separation Checking #24112
• Avoid blowup of compute times for ill-formed retains #24564
• Fix apply rule #24273

Experimental: Explicit Nulls

• Only nullify tasty if Yflexify-tasty is set; Refine FlexibleType nullification rules #23938
• Apply flexible types to files compiled without explicit nulls #23386
• Fix NotNullInfo in multi-case match #23864
• Fix captureWildcards with FlexibleType #24070
• Do not assume left is non-null if another branch is null in splitLast #24325
• Fix #24440: Do not check public flexible types on artifact symbols or inside anonymous classes #24471

Experimental: Global Initalization

• Modelling assigning to null in the global object initialization checker #23858
• Fix global init checker unexpected by name #23859
• Fix selection on safe value in the global object initialization checker #23860
• Re-design Env of the global object init checker #24107

Experimental: Into

• Allow into on enums #23795

Experimental: Modularity

• Simpler inference for tracked #22972

Implicits

• Only check seen for LazyRef for TypeSizeAccumulator #20459
• Derived members succeed other givens in cycle test #23898

JVM Backend

• Fix generic signatures for mixin forwarders conflicting type parameter names #24567
• Look at the underlying of a TermRef for a getter #24565
• Refine parameter adaptation logic for arrays #23591
• Fix #24573: Add stricter checks for platform SAM compatibility #24624
• Only rename method type params shadowing enclosing class type params #24684
• Update BackendUtils.classfileVersionMap #23954
• Refine TypeErasure.samExpansionNotNeeded to check parent traits if SAM is covered #24843

Linting

• Drill through type lambda for tree symbol #23699
• Warn unused masking imports, remove obsolete unused options #23757
• Unused lint does not rewrite suppressed warnings #24055
• Check for synthetic case methods in unused lint #24239
• CheckUnused examines type of Apply #24465
• Suggest runtimeChecked in warning/error messages #24672
• Parameter name can be masked in import #24635

Match Types

• Prioritize tree type over proto type when typing Binds #24175

Metaprogramming

• Warn about encoded pkg obj names #22707

Named Tuples

• Prohibit selection of tuples with members named apply. #24191
• Add an Ordering given instance for named tuples #23379
• Named tuple toMap extension method #23827

Opaque Types

• Prevent opaque types leaking from transparent inline methods #23792
• Make opaque types decomposable #24068

Packaging

• Ensure scala3-library does not contain .class or .tasty files #24714
• Ensure that scala3-library artifacts are empty #24816
• Actively remove Scala 2 pickles and emit synthetic TASTy attribute for copied stdlib .class files #24846

Parser

• Make consume a soft modifier #23755

Pattern Matching

• Fix false exhaustivity warning for seq match #23968
• Use upper bound of abstract types in exhaustivity checking #23909

Performance

• Make compilationUnitInfo of TastyLoader lazy #24604
• Strip CC annotations in TypeMap when CC is not enabled #24556

Pickling

• Cleanup the type of UnApply trees in posttyper #24259

Presentation Compiler

• Make sure that we can query tree.source #24123
• Add unsafe RawPresentationCompiler implementation [...

3.8.0-RC6

Backported changes

• Actively remove Scala 2 pickles and emit synthetic TASTy attribute for copied stdlib .class files #24846
• Deprecate MapOps.KeySet, replace with private (and more performant) strict/lazy KeySet implementations #24767

Contributors

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

According to git shortlog -sn --no-merges 3.8.0-RC5..3.8.0-RC6 these are:

    17  Wojciech Mazur
     5  Natsu Kagami
     1  Hamza Remmal

3.8.0-RC5

Backported changes

• Synchronize standard library sources with Scala 2.13.18 #24788
• Use up-to-date sources of Scala 2.13 stdlib when patching Scala 3 bytecode #24855
• Add @uncheckedOverride annotation for definitions that may override #24545
• Update BackendUtils.classfileVersionMap #23954
• Fix REPL interrupt instrumentation conditional #24837
• Refine TypeErasure.samExpansionNotNeeded to check parent traits if SAM is covered #24843
• Ensure that scala3-library artifacts are empty #24816

Contributors

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

According to git shortlog -sn --no-merges 3.8.0-RC4..3.8.0-RC5 these are:

    21  Wojciech Mazur
     3  Lukas Rytz
     2  Kenji Yoshida
     1  Evgeny Vereshchagin
     1  Li Haoyi

3.8.0-RC4

Backported changes

• Bump Scala CLI to 1.11.0 (was 1.10.1) and coursier to 2.1.25-M21 (was 2.1.25-M19) #24739
• Suggest runtimeChecked in warning/error messages #24672
• Ensure scala3-library does not contain .class or .tasty files #24714
• Fix #24573: Add stricter checks for platform SAM compatibility #24624
• Fix #24440: Do not check public flexible types on artifact symbols or inside anonymous classes #24471
• Tweak type for tryParameterless #24716
• Fix apply rule #24273
• Work around sbt#8376 and re-enable shapeless-3 community build #24709
• Parameter name can be masked in import #24635
• Only rename method type params shadowing enclosing class type params #24684
• Make style-only changes to doc comments for the standard library. #24754
• Restore dist projects required for Scala runners #24775
• Update to new wildcard syntax in library scaladoc #24751
• Move into to preview in the language reference #24704

Contributors

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

According to git shortlog -sn --no-merges 3.8.0-RC3..3.8.0-RC4 these are:

    13  Wojciech Mazur
     6  Rikito Taniguchi
     3  noti0na1
     2  Piotr Chabelski
     2  Som Snytt
     1  Jamie Thompson
     1  Kenji Yoshida
     1  Oliver Bračevac