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Split up -sourcepath usage between scaladoc and -Y option for bootstrapping

help wanted

scaladoc tool

Status: Open.

#7125 In scala/bug;

· scabug opened on Feb 13, 2013

ClassCastException when calling a trait method with call-by-name argument if implemented as single abstract method

byname

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/)

has PR

sam

Status: Open.

#11237 In scala/bug;

· ruslan2009 opened on Nov 1, 2018

No completions returned in the middle of the select chain

help wanted

presentation compiler

Status: Open.

#12937 In scala/bug;

· kasiaMarek opened on Jan 26, 2024

Type inference involving getClass on private trait doesn't work

existential

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/)

help wanted

typer

Status: Open.

#12974 In scala/bug;

· palanga opened on Mar 25, 2024

-Xsource-features:infer-override stricter than Scala 3

Status: Open.

#12980 In scala/bug;

· lrytz opened on Apr 4, 2024

case value class canEqual is inconsistent

Status: Open.

#13034 In scala/bug;

· lrytz opened on Sep 12, 2024

given limitation under -Xsource:3

Status: Open.

#13040 In scala/bug;

· som-snytt opened on Sep 26, 2024

No BuildFrom instance for concurrent.Map

has PR

library:collections

Status: Open.

#13047 In scala/bug;

· lrytz opened on Oct 18, 2024

TASTy reader: Accessing opaque type with type param causes NoSuchMethodError

tastyreader

Status: Open.

#13072 In scala/bug;

· jilen opened on Dec 20, 2024

some Scala 2 REPL commands should be "deprecated" if not implemented in Scala 3

repl

Status: Open.

#13080 In scala/bug;

· SethTisue opened on Jan 22, 2025

Certain type aliases written in Scala 3 can't be used in Scala 2

tastyreader

Status: Open.

#13113 In scala/bug;

· jadenPete opened on Aug 11, 2025

Certain concrete type projections written in Scala 3 can't be used in Scala 2

tastyreader

Status: Open.

#13114 In scala/bug;

· jadenPete opened on Aug 12, 2025

Subclasses of Scala 3 classes falsely flagged as missing implementations

tastyreader

Status: Open.

#13122 In scala/bug;

· jadenPete opened on Sep 19, 2025

Unsupported generic tuple error when using Scala 3 code in Scala 2

tastyreader

Status: Open.

#13124 In scala/bug;

· jadenPete opened on Sep 22, 2025

Cross-version inheritance hierarchy crashes compiler

tastyreader

Status: Open.

#13125 In scala/bug;

· jadenPete opened on Oct 1, 2025

Scala 3 case class with varargs parameter can't be constructed in Scala 2

tastyreader

Status: Open.

#13126 In scala/bug;

· jadenPete opened on Oct 1, 2025

False "cannot override a concrete member" error when referencing Scala 3 code

tastyreader

Status: Open.

#13135 In scala/bug;

· jadenPete opened on Oct 24, 2025

TASTy reader should error early on unsupported Scala 3 version

tastyreader

Status: Open.

#13152 In scala/bug;

· SethTisue opened on Feb 6, 2026

Path generated for implicit conversion leads to NoSuchMethodError

implicit

Status: Open.

#13160 In scala/bug;

· lrytz opened on Feb 25, 2026

Inliner incorrectly modifies IINC on parameters

optimizer

Status: Open.

#13156 In scala/bug;

· SolalPirelli opened on Feb 20, 2026