Issues

• Await.result/Await.ready leak CompletionLatches callbacks after timeout or interruption

  scala/bug#13197 · Filter by author alexeykudinkin opened on Sep 29, 2026 · 2.13.19
  

• JEP 390: Warnings for Value-Based Classes

  enhancementlint
  scala/bug#13196 · Filter by author xuwei-k opened on Sep 20, 2026 · 2.13.19

• Support JEP 401: Value Objects in JavaParsers

  java interop
  scala/bug#13194 · Filter by author xuwei-k opened on Sep 19, 2026 · 2.13.19
  1

• String match with only case null and a binder emits a superfluous hashCode call (regression in 2.13.2)

  scala/bug#13192 · Filter by author tmgreen opened on Sep 10, 2026 · Backlog

• Crash on invalid code defining case class with duplicate arguments

  compiler crashfixed in Scala 3
  scala/bug#13186 · Filter by author lmaltsis opened on Jun 24, 2026 · Backlog
  1

• Scala 2 emits Object VarHandle call site for asInstanceOf[Int]

  scala/bug#13184 · Filter by author He-Pin opened on Jun 20, 2026 · 2.13.19
  4

  

• Expression toString" suffix" should trigger a warning

  lint
  scala/bug#13182 · Filter by author noresttherein opened on Jun 4, 2026 · Backlog
  3

• 'Fields cannot be volatile' on a var constructor parameter in presence of default parameters

  annotationsfixed in Scala 3named/default args
  scala/bug#13180 · Filter by author noresttherein opened on May 11, 2026 · Backlog
  2

• Failure to compile Java polymorphic signatures inside a specialized method

  specialization
  scala/bug#13179 · Filter by author noresttherein opened on May 4, 2026 · Backlog
  1

• Uninformative error message for ambiguous implicit conversions

  errors and warningsfixed in Scala 3implicit classes
  scala/bug#13177 · Filter by author Alex1005a opened on Apr 24, 2026 · Backlog
  2

• Compiler crashes when it encounters Java classfile API

  fixed in Scala 3
  scala/bug#13176 · Filter by author noresttherein opened on Apr 20, 2026 · 2.13.19
  

• IllegalCyclicReference involving ClassImpl (new Java classfile API)

  fixed in Scala 3
  scala/bug#13175 · Filter by author noresttherein opened on Apr 20, 2026 · 2.13.19
  1

• can't find type required by parameter error when referencing Scala 3 code

  tastyreader
  scala/bug#13174 · Filter by author jadenPete opened on Apr 17, 2026 · Backlog

• Error when matching against sugared Function0[_]

  scala/bug#13170 · Filter by author noresttherein opened on Apr 4, 2026

• Type mismatch when unapply returns a type parameterized with a singleton type

  patmat
  scala/bug#13169 · Filter by author noresttherein opened on Apr 4, 2026 · Backlog
  1

• Unbound wildcard type when matching with @unchecked

  scala/bug#13168 · Filter by author noresttherein opened on Apr 4, 2026 · Backlog
  1

• False positive compile type mismatch error for 2.13.x and 2.12.x

  fixed in Scala 3infer
  scala/bug#13164 · Filter by author geny200 opened on Mar 6, 2026 · Backlog
  2

• Compiler crashes when using a combination of by name parameter, default parameter, and empty argument list

  compiler crash
  scala/bug#13162 · Filter by author Alex1005a opened on Feb 27, 2026 · Backlog

• Path generated for implicit conversion leads to NoSuchMethodError

  implicit
  scala/bug#13160 · Filter by author lrytz opened on Feb 25, 2026 · 2.13.19
  

• Scaladoc diagrams stying and links broken on 2.13

  scaladoc tool
  scala/bug#13157 · Filter by author lrytz opened on Feb 23, 2026 · Backlog

• Inliner incorrectly modifies IINC on parameters

  optimizer
  scala/bug#13156 · Filter by author SolalPirelli opened on Feb 20, 2026 · 2.13.19

• Compiler hangs during patmat analysis

  compiler crashpatmat
  scala/bug#13154 · Filter by author Christewart opened on Feb 11, 2026
  7

• Compiler hangs in nested pattern match

  fixed in Scala 3patmat
  scala/bug#13151 · Filter by author szeiger opened on Feb 3, 2026 · Backlog

• Some path-dependent types involving classes compiled with Scala 3 don't compile

  scala/bug#13150 · Filter by author jadenPete opened on Jan 26, 2026

• Bad overload resolution with package object extension

  fixed in Scala 3
  scala/bug#13149 · Filter by author som-snytt opened on Jan 7, 2026 · Backlog