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Crash when accessing Scala 2 code emitted with macro-annotations

area:metaprogramming:macro-annotations

compat:scala2

itype:bug

itype:crash

regressionThis worked in a previous version but doesn't anymoreThis worked in a previous version but doesn't anymore

Status: Open.

#23609 In scala/scala3;

· WojciechMazur opened on Jul 27, 2025

Certain value classes compiled with Scala 2 can't be used with Scala 3

area:value-classesIssues tied to value classes.Issues tied to value classes.

compat:scala2

itype:bug

Status: Open.

#23163 In scala/scala3;

· jadenPete opened on May 14, 2025

Dotty Type Erasure for Scala 2 compound types is wrong

area:erasure

area:spec

compat:scala2

itype:bug

Status: Open.

#22525 In scala/scala3;

· hamzaremmal opened on Feb 5, 2025

Internal "Wrong number of arguments" error when reading a Scala 2 annotation in a macro

area:metaprogramming:reflectionIssues related to the quotes reflection APIIssues related to the quotes reflection API

area:pickling

compat:scala2

itype:bug

Status: Open.

#22200 In scala/scala3;

· jchyb opened on Dec 12, 2024

Runtime java.lang.NoSuchMethodError when calling a method in anonymous class returning a mixin

area:erasure

compat:scala2

itype:bug

Status: Open.

#22177 In scala/scala3;

· jchyb opened on Dec 9, 2024

Show correct version when using util.Properties.versionNumberString

area:tooling

compat:scala2

itype:bug

Status: Open.

#22144 In scala/scala3;

· tgodzik opened on Dec 5, 2024

Dotty emit wrong generic signature for generic value classes

area:value-classesIssues tied to value classes.Issues tied to value classes.

compat:java

compat:scala2

itype:bug

Status: Open.

#22140 In scala/scala3;

· hamzaremmal opened on Dec 4, 2024

Scala 2 regression: extension method is not searched in the companion object of a type parameter's parameter

area:extension-methods

area:implicitsrelated to implicitsrelated to implicits

compat:scala2

itype:bug

regression:scala2

Status: Open.

#21951 In scala/scala3;

· neko-kai opened on Nov 14, 2024

Asymmetric generic signatures for HKT in covariant/contravariant types

area:backend

compat:scala2

itype:bug

Status: Open.

#21576 In scala/scala3;

· WojciechMazur opened on Sep 11, 2024

Clarify -Wconf:help that last setting wins, including in comma-separated setting text

area:lintingLinting warnings enabled with -W or -XlintLinting warnings enabled with -W or -Xlint

compat:scala2

itype:bug

Status: Open.

#19885 In scala/scala3;

· lrytz opened on Mar 5, 2024

define a alias of annotation

compat:scala2

itype:bug

stat:needs info

Status: Open.

#18802 In scala/scala3;

· cjdxhjj opened on Oct 31, 2023

scaladoc generates warnings: No DRI found for query: ...

area:doctool

compat:scala2

itype:bug

Status: Open.

#17578 In scala/scala3;

· reid-spencer opened on May 24, 2023