Cyclic reference involving class for Java dependency

[cchantep]

Compiler version

3.0.0-RC1

Minimized code

import acolyte.jdbc.RowLists

(RowLists.stringList :+ v).asResult

See:

• source
• Java class

Output

exception caught when loading class Impl: Cyclic reference involving class Impl
[error] -- [E046] Cyclic Error: /Users/cchantep/Projects/acolyte/jdbc-scala/src/main/scala/AcolyteDSL.scala:377:5 
[error] 377 |    (RowLists.stringList :+ v).asResult
[error]     |     ^

Expectation

Should stay compatible with Java classes.

[griggt]

Self-contained:

RowList1.java

public class RowList1<A, U extends RowList1<A, ?>> {
    public static final class Impl<A> extends RowList1<A, Impl<A>> {}
}

RowLists.java

public final class RowLists {
    public static RowList1.Impl<String> stringList() {
        throw new UnsupportedOperationException();
    }
}

Test.scala

object Test:
  val test = RowLists.stringList

$ javac -version
javac 1.8.0_282

$ dotc -version
Scala compiler version 3.0.0-RC1 -- Copyright 2002-2021, LAMP/EPFL

$ javac RowList1.java RowLists.java && dotc Test.scala 
exception caught when loading class Impl: Cyclic reference involving class Impl
-- [E046] Cyclic Error: Test.scala:2:13 ----------------------------------------
2 |  val test = RowLists.stringList
  |             ^
  |             Cyclic reference involving class Impl

[griggt]

This seems to have already been fixed by #11471, could you try a recent nightly and confirm?

[cchantep]

Seems ok, in 3.0.0-RC2, thanks.