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Crash on invalid code defining case class with duplicate arguments

Status: Open.

#13186 In scala/bug;

· lmaltsis opened on Jun 24, 2026

Vulnerability: GHSA-2r2c-cx56-8933 via jline-remote-telnet

security

Status: Open.

#13185 In scala/bug;

· mfirry opened on Jun 24, 2026

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2.13.19

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

Status: Open.

#13184 In scala/bug;

· He-Pin opened on Jun 20, 2026

Forward binary compatibility bug in 2.13.17 pickling

Status: Open.

#13183 In scala/bug;

· szeiger opened on Jun 8, 2026

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2.13.19

Expression toString" suffix" should trigger a warning

lint

Status: Open.

#13182 In scala/bug;

· noresttherein opened on Jun 4, 2026

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Backlog

Binary incompatibility between 2.13.16 and 2.13.17: MurmurHash3.caseClassHash$default$2() missing in 2.13.16

Status: Open.

#13181 In scala/bug;

· alicez-db opened on May 21, 2026

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2.13.19

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

annotations

fixed in Scala 3This issue does not exist in the Scala 3 compiler (https://github.com/lampepfl/dotty/)This issue does not exist in the Scala 3 compiler (https://github.com/lampepfl/dotty/)

named/default args

Status: Open.

#13180 In scala/bug;

· noresttherein opened on May 11, 2026

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Backlog

Failure to compile Java polymorphic signatures inside a specialized method

specialization

Status: Open.

#13179 In scala/bug;

· noresttherein opened on May 4, 2026

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Backlog

Uninformative error message for ambiguous implicit conversions

errors and warnings

fixed in Scala 3This issue does not exist in the Scala 3 compiler (https://github.com/lampepfl/dotty/)This issue does not exist in the Scala 3 compiler (https://github.com/lampepfl/dotty/)

implicit classes

Status: Open.

#13177 In scala/bug;

· Alex1005a opened on Apr 24, 2026

·  

Backlog

Compiler crashes when it encounters Java classfile API

fixed in Scala 3This issue does not exist in the Scala 3 compiler (https://github.com/lampepfl/dotty/)This issue does not exist in the Scala 3 compiler (https://github.com/lampepfl/dotty/)

Status: Open.

#13176 In scala/bug;

· noresttherein opened on Apr 20, 2026

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2.13.19

IllegalCyclicReference involving ClassImpl (new Java classfile API)

fixed in Scala 3This issue does not exist in the Scala 3 compiler (https://github.com/lampepfl/dotty/)This issue does not exist in the Scala 3 compiler (https://github.com/lampepfl/dotty/)

Status: Open.

#13175 In scala/bug;

· noresttherein opened on Apr 20, 2026

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

tastyreader

Status: Open.

#13174 In scala/bug;

· jadenPete opened on Apr 17, 2026

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Backlog