Closed
Description
minimized code
trait A extends Any {
case class B()
}Stack trace
-- Error: testing/Test.scala:2:15 ----------------------------------------------
2 | case class B()
| ^
|undefined: x1.$asInstanceOf$[A.this.B @unchecked].A$B$$$outer.eq # 1409: TermRef(TermRef(AnnotatedType(TypeRef(ThisType(TypeRef(ThisType(TypeRef(NoPrefix,module class <empty>)),trait A)),class B),ConcreteAnnotation(Apply(Select(New(TypeTree[TypeRef(ThisType(TypeRef(NoPrefix,module class scala)),class unchecked)]),<init>),List()))),method A$B$$$outer),eq) at erasure
exception occurred while compiling testing/Test.scala
scala.MatchError: NoType (of class dotty.tools.dotc.core.Types$NoType$) while compiling testing/Test.scala
Exception in thread "main" scala.MatchError: NoType (of class dotty.tools.dotc.core.Types$NoType$)
at dotty.tools.dotc.transform.TransformByNameApply.transformApply(TransformByNameApply.scala:60)
at dotty.tools.dotc.transform.MegaPhase.goApply(MegaPhase.scala:611)
at dotty.tools.dotc.transform.MegaPhase.goApply(MegaPhase.scala:612)
at dotty.tools.dotc.transform.MegaPhase.goApply(MegaPhase.scala:612)
at dotty.tools.dotc.transform.MegaPhase.goApply(MegaPhase.scala:612)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:272)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:396)
at dotty.tools.dotc.transform.MegaPhase.transformTrees$$anonfun$1(MegaPhase.scala:420)
at scala.collection.immutable.List.mapConserve(List.scala:444)
at dotty.tools.dotc.transform.MegaPhase.transformTrees(MegaPhase.scala:420)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:271)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:396)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:296)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:396)
at dotty.tools.dotc.transform.MegaPhase.transformStat$2(MegaPhase.scala:406)
at dotty.tools.dotc.transform.MegaPhase.$anonfun$1(MegaPhase.scala:409)
at scala.collection.immutable.List.mapConserve(List.scala:444)
at dotty.tools.dotc.transform.MegaPhase.transformStats(MegaPhase.scala:409)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:286)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:396)
at dotty.tools.dotc.transform.MegaPhase.transformNamed$1(MegaPhase.scala:256)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:394)
at dotty.tools.dotc.transform.MegaPhase.transformTrees$$anonfun$1(MegaPhase.scala:420)
at scala.collection.immutable.List.mapConserve(List.scala:444)
at dotty.tools.dotc.transform.MegaPhase.transformTrees(MegaPhase.scala:420)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:271)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:396)
at dotty.tools.dotc.transform.MegaPhase.mapDefDef$1(MegaPhase.scala:245)
at dotty.tools.dotc.transform.MegaPhase.transformNamed$1(MegaPhase.scala:248)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:394)
at dotty.tools.dotc.transform.MegaPhase.transformStat$2(MegaPhase.scala:404)
at dotty.tools.dotc.transform.MegaPhase.$anonfun$1(MegaPhase.scala:409)
at scala.collection.immutable.List.mapConserve(List.scala:444)
at dotty.tools.dotc.transform.MegaPhase.transformStats(MegaPhase.scala:409)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:339)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:396)
at dotty.tools.dotc.transform.MegaPhase.transformNamed$1(MegaPhase.scala:251)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:394)
at dotty.tools.dotc.transform.MegaPhase.transformStat$2(MegaPhase.scala:404)
at dotty.tools.dotc.transform.MegaPhase.$anonfun$1(MegaPhase.scala:409)
at scala.collection.immutable.List.mapConserve(List.scala:444)
at dotty.tools.dotc.transform.MegaPhase.transformStats(MegaPhase.scala:409)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:339)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:396)
at dotty.tools.dotc.transform.MegaPhase.transformNamed$1(MegaPhase.scala:251)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:394)
at dotty.tools.dotc.transform.MegaPhase.transformStat$2(MegaPhase.scala:404)
at dotty.tools.dotc.transform.MegaPhase.$anonfun$1(MegaPhase.scala:409)
at scala.collection.immutable.List.mapConserve(List.scala:444)
at dotty.tools.dotc.transform.MegaPhase.transformStats(MegaPhase.scala:409)
at dotty.tools.dotc.transform.MegaPhase.mapPackage$1(MegaPhase.scala:356)
at dotty.tools.dotc.transform.MegaPhase.transformUnnamed$1(MegaPhase.scala:359)
at dotty.tools.dotc.transform.MegaPhase.transformTree(MegaPhase.scala:396)
at dotty.tools.dotc.transform.MegaPhase.transformUnit(MegaPhase.scala:415)
at dotty.tools.dotc.transform.MegaPhase.run(MegaPhase.scala:427)
at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:315)
at scala.collection.immutable.List.map(List.scala:219)
at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:316)
at dotty.tools.dotc.Run.runPhases$4$$anonfun$4(Run.scala:161)
at dotty.runtime.function.JProcedure1.apply(JProcedure1.java:15)
at dotty.runtime.function.JProcedure1.apply(JProcedure1.java:10)
at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323)
at dotty.tools.dotc.Run.runPhases$5(Run.scala:171)
at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:179)
at dotty.runtime.function.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:65)
at dotty.tools.dotc.Run.compileUnits(Run.scala:186)
at dotty.tools.dotc.Run.compileSources(Run.scala:123)
at dotty.tools.dotc.Run.compile(Run.scala:106)
at dotty.tools.dotc.Driver.doCompile(Driver.scala:36)
at dotty.tools.dotc.Driver.process(Driver.scala:189)
at dotty.tools.dotc.Driver.process(Driver.scala:158)
at dotty.tools.dotc.Driver.process(Driver.scala:170)
at dotty.tools.dotc.Driver.main(Driver.scala:197)
at dotty.tools.dotc.Main.main(Main.scala)