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Inconsistent warning behaviour on initialisation: warning for class but not singelton object, AND difficult to find docs about warnings

area:initialization

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

itype:bug

Status: Open.

#24106 In scala/scala3;

· bjornregnell opened on Sep 29, 2025

Using a constructor inside inside a lambda, with a specified wider return type, causes a spooky java.lang.NoClassDefFoundError error in the outermost object's class initialization

area:initialization

itype:bug

itype:crash

Status: Open.

#23924 In scala/scala3;

· neko-kai opened on Sep 14, 2025

Macro matches opaque types differently with safe initialization enabled

area:initialization

area:metaprogramming:quotesIssues related to quotes and splicesIssues related to quotes and splices

area:opaque-types

itype:bug

Status: Open.

#23894 In scala/scala3;

· johnhungerford opened on Sep 10, 2025

LambdaConversionException: Type mismatch for instantiated parameter

area:initialization

itype:bug

Status: Open.

#23179 In scala/scala3;

· xuwei-k opened on May 16, 2025

ClassCastExcpetion when inheriting from two traits that define conflicting vals

area:initialization

itype:bug

itype:soundnessSoundness bug (it lets us compile code that crashes at runtime with a ClassCastException)Soundness bug (it lets us compile code that crashes at runtime with a ClassCastException)

Status: Open.

#23061 In scala/scala3;

· alex-aua opened on Apr 28, 2025

crash for -Wsafe-init with munit and munit-scalacheck

area:initialization

area:MiMaIssues tied to binary compatibility based on semantic versioning.Issues tied to binary compatibility based on semantic versioning.

itype:bug

itype:crash

stat:needs minimizationNeeds a self contained minimizationNeeds a self contained minimization

Status: Open.

#22442 In scala/scala3;

· rmgk opened on Jan 23, 2025

-Wsafe-init doesn't detect initialization order problems

area:initialization

itype:enhancement

Status: Open.

#22152 In scala/scala3;

· kubukoz opened on Dec 5, 2024

Initialization of nested objects differs based on whether they are wrapped in a trait

area:initialization

itype:bug

Status: Open.

#21444 In scala/scala3;

· lihaoyi opened on Aug 27, 2024

Scala 3 generated @main function is generated in package scope

area:annotations

area:initialization

itype:enhancement

Status: Open.

#21348 In scala/scala3;

· ekrich opened on Aug 7, 2024

Compiler fails in generic inline method that uses macro with 'safe-init'

area:initialization

area:inline

itype:bug

itype:crash

Status: Open.

#21176 In scala/scala3;

· st33v3 opened on Jul 11, 2024

Stack overflow when summoning <code>Mirror</code> for local class

area:initialization

itype:bug

Status: Open.

#20416 In scala/scala3;

· mrdziuban opened on May 15, 2024

Infinite loop when compiling http4s with -Ysafe-init-global flag

area:initialization

itype:bug

Status: Open.

#19097 In scala/scala3;

· q-ata opened on Nov 27, 2023