chore(deps): update dependency scala to v2.13.18

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
scala (source)	2.13.16 -> 2.13.18

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Release Notes

scala/scala (scala)

v2.13.18: Scala 2.13.18

Compare Source

The Scala team at Akka is pleased to announce Scala 2.13.18.

This release fixes several regressions from 2.13.17. It is compatible with JDKs 8 to 26.

The following are highlights of this release:

Restore traditional behavior when passing a null array to a varargs method in Scala 3

When passing an array as "sequence argument" to a varargs method, method(arg: _*), the array is converted to a Seq.

In Scala 3 (the syntax is method(arg*)), this conversion is done by the ScalaRunTime.wrapXArray methods.
These methods were simplified in 2.13.17, which changed the semantics of a method((null: Array[T])*) invocation.

#​11165 restores the previous null handling semantics.

Fixes for false positive warnings

• #​11162 reverts -Xlint:infer-any to the behavior of 2.13.16.
  The lint was extended in 2.13.17 to warn whenever Nothing is inferred for a higher-kinded type parameter T[_].
  The new warning showed up in many projects: often as a false positive, but even the "true" positive warning was considered unhelpful / spurious in real-world use cases.
• Fix false positive unused warning for private val used in annotation #​11149
• Fix false positive -Xlint:universal-methods warning in synthetic code #​11159

JDK 26 support

• Compiling on Java 26 is now supported #​11179

New @uncheckedOverride annotation

The new @uncheckedOverride annotation is equivalent to the override keyword, except that it allows to override nothing. This is useful when cross-building: a method may override or not, depending on the version of some dependency. #​11179

GPG key change

This release is signed with a different GPG key than previous Scala 2 releases. The new key is the same one used by Scala 3. #​11158

Other notable changes

• On Java 25+, sbt run now detects main methods that are non-static, non-public or without parameter list #​11137
• Regression fix: 2.13.17 was accidentally dropping certain annotations #​11173
• Deprecate the -Xmain-class compiler flag #​11156

More changes

For the complete 2.13.18 change lists, see all merged PRs and all closed bugs.

Compatibility

As usual for our minor releases, Scala 2.13.18 is binary-compatible with the whole Scala 2.13 series.

Upgrading from 2.12? Enable -Xmigration while upgrading to request migration advice from the compiler.

Contributors

A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.

This release was brought to you by 8 contributors, according to git shortlog -sn --no-merges @​ ^v2.13.17 ^2.12.x. Thank you Lukas Rytz, A. P. Marki, Scala Steward, Seth Tisue, NthPortal, Evgeny Vereshchagin, Kenji Yoshida, Philippus Baalman.

Thanks to Akka for their continued sponsorship of the Scala 2 team’s efforts. Akka offers commercial support for Scala.

Scala 2.13 notes

The release notes for Scala 2.13.0 have important information applicable to the whole 2.13 series.

Obtaining Scala

Scala releases are available through a variety of channels, including (but not limited to):

• Bump the using scala setting in your Scala-CLI project
• Bump the scalaVersion setting in your sbt or Mill project
• Download a distribution from scala-lang.org
• Obtain JARs via Maven Central

v2.13.17: Scala 2.13.17

Compare Source

The Scala team at Akka is pleased to announce Scala 2.13.17.

This release is compatible with the new JDK 25 LTS.

See below for known issues / regressions in this release.

The following are highlights of this release:

Compatibility

• JDK 25 support in optimizer (#​11046)
• Support Scala 3.7 in the TASTy reader (#​11100)
• When parsing Java sources, skip JDK 21+’s JEP 445 compact compilation units (#​11066)

Breaking changes

• Mix in the productPrefix hash statically in case class hashCode (#​11023)
  • The synthetic hashCode method of a case class no longer calls productPrefix. This changes the hash code of case classes that override productPrefix.
• Improve scala.util.Using suppression order (NonFatal suppresses ControlThrowable) (#​11000 by @​NthPortal)
  • When multiple exceptions are thrown, a predefined order determines which exception is rethrown and which is attached as "suppressed"
  • Users of scala-collection-compat can upgrade to 2.14.0 to get the same behavior change
  • If you use Using in a project that crossbuilds to Scala 3, you may wish to wait for a Scala 3 release that includes the 2.13.17 standard library, or use a dependency override to force the upgrade in your build

Features and notable changes

• Fix AnnotationInfo when using named/default arguments, support custom annotation subclasses (#​10976)
  • Users can now define, for example, class nodep extends annotation.nowarn("cat=deprecation") and use @nodep to silence deprecations
• Show nowarn/-Wconf filters for a warning with @nowarn("verbose") (#​10985)
• Use toVector for XML literal sequences (#​11065)

Scala 3 compatibility and migration

• Allow using -Xsource-features without -Xsource:3 (#​11123)
• Lint inferred structural types (#​10942)
  • In case this warning is undesired, it can be disabled using -Xlint:_,-infer-structural
• Port summonIgnoring from 3.7 as c.inferImplicitValueIgnoring (#​11068 by @​MateuszKubuszok)

Notable bug fixes

• Allow optimizer use within Bazel (don't attempt inlining methods without instructions) (#​11016)
• Reduce memory footprint of evaluated elements in LazyList (#​10937)
• Deregister stale callbacks in Future.firstCompletedOf (prevents memory leaks) (#​10927)
• Require -Xsource-features:eta-expand-always for eta-expansion without an expected type (#​10907 by @​som-snytt)

More changes

For the complete 2.13.17 change lists, see all merged PRs and all closed bugs.

Known issues / regressions

False positive lint warning: a type was inferred to be kind-polymorphic

• A new warning was added to the existing -Xlint:infer-any flag (which is also enabled with plain -Xlint)
• The implementation issues false positive warnings
• To revert back to the behavior of Scala 2.13.16, add -Wconf:cat=lint-infer-any&msg=kind-polymorphic:s
• See scala/scala#13128 for details

Scaladoc @define no longer works if the doc comment is on an object

• See scala/bug#13129 for details and a workaround

-Wunused:privates now warns about unused private final val declarations. When such a val is only referenced as argument to a Java annotation, it is incorrectly reported as unused

• See scala/bug#13130 for details
• Workaround: add @nowarn("cat=unused-privates") to the val declaration

Semantic change when passing a null sequence parameter in Scala 3, i.e., foo((null: Array[T])*). Within def foo(xs: T*), the value xs is no longer null.

• Merely updating scala-library on the classpath to 2.13.17 can change the runtime behavior of previously compiled code
• See #​11165 for details

Compatibility

As usual for our minor releases, Scala 2.13.17 is binary-compatible with the whole Scala 2.13 series.

Upgrading from 2.12? Enable -Xmigration while upgrading to request migration advice from the compiler.

Contributors

A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.

This release was brought to you by 23 contributors, according to git shortlog -sn --no-merges @​ ^v2.13.16 ^2.12.x. Thank you A. P. Marki, Lukas Rytz, Seth Tisue, Alec Theriault, Jason Zaugg, Sébastien Doeraene, Scala Steward, Bernhard, Tomasz Godzik, Vasil Vasilev, Arthur Soulié, Emil Ejbyfeldt, Hamza Remmal, Jiri Vanek, Kenji Yoshida, Lorenzo Gabriele, Marissa, Mateusz Kubuszok, Matthew Lutze, Philippus Baalman, Stefan Zeiger, philwalk, 虎鸣.

Thanks to Akka for their continued sponsorship of the Scala 2 team’s efforts. Akka offers commercial support for Scala.

Scala 2.13 notes

The release notes for Scala 2.13.0 have important information applicable to the whole 2.13 series.

Obtaining Scala

Scala releases are available through a variety of channels, including (but not limited to):

• Bump the using scala setting in your Scala-CLI project
• Bump the scalaVersion setting in your sbt or Mill project
• Download a distribution from scala-lang.org
• Obtain JARs via Maven Central

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[github-actions]

This pull request seems a bit stale.. Shall we invite more to the party?

[dmivankov]

🦄

[dmivankov]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.73%. Comparing base (cd200d2) to head (0aaf131).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #878   +/-   ##
=======================================
  Coverage   84.73%   84.73%           
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  Files          99       99           
  Lines        2738     2739    +1     
  Branches      211      199   -12     
=======================================
+ Hits         2320     2321    +1     
  Misses        418      418           

see 1 file with indirect coverage changes

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