search

scala / scala3

The Scala 3 compiler, also known as Dotty.
https://dotty.epfl.ch
Apache License 2.0
5.83k stars 1.05k forks source link

java.lang.AssertionError: assertion failed: Attempt to commit TS[11888X, 11724X, 11481X, 11061X, 10149, 2, #13101

Closed Swoorup closed 3 years ago

Swoorup commented 3 years ago

Compiler version

Tried both 3.0.1 and 3.0.2-RC1

Minimized code

See below https://github.com/lampepfl/dotty/issues/13101#issuecomment-882932439

Output (click arrow to expand)

`sbt compile` ```shell [info] exception occurred while compiling /Users/swoorup.joshi/personal/zicoin/src/main/scala/Main.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/actor/Blockchain.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/actor/Broker.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/actor/Miner.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/actor/Node.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/api/NodeRoutes.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/blockchain/Chain.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/blockchain/Core.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/blockchain/Transaction.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/cluster/ClusterListener.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/cluster/ClusterManager.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/common/Common.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/common/NewType.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/crypto/Crypto.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/de/heikoseeberger/akkahttpcirce/CirceSupport.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/exception/InvalidProofException.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/exception/MinerBusyException.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/proof/ProofOfWork.scala java.lang.AssertionError: assertion failed: Attempt to commit TS[11888X, 11724X, 11481X, 11061X, 10149, 2, 1, 0] into already committed TS[11724X, 11481X, 11061X, 10149, 2, 1, 0] while compiling /Users/swoorup.joshi/personal/zicoin/src/main/scala/Main.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/actor/Blockchain.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/actor/Broker.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/actor/Miner.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/actor/Node.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/api/NodeRoutes.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/blockchain/Chain.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/blockchain/Core.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/blockchain/Transaction.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/cluster/ClusterListener.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/cluster/ClusterManager.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/common/Common.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/common/NewType.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/crypto/Crypto.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/de/heikoseeberger/akkahttpcirce/CirceSupport.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/exception/InvalidProofException.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/exception/MinerBusyException.scala, /Users/swoorup.joshi/personal/zicoin/src/main/scala/proof/ProofOfWork.scala [error] ## Exception when compiling 18 sources to /Users/swoorup.joshi/personal/zicoin/target/scala-3.0.2-RC1/classes [error] java.lang.AssertionError: assertion failed: Attempt to commit TS[11888X, 11724X, 11481X, 11061X, 10149, 2, 1, 0] into already committed TS[11724X, 11481X, 11061X, 10149, 2, 1, 0] [error] scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8) [error] dotty.tools.dotc.core.TyperState.commit(TyperState.scala:146) [error] dotty.tools.dotc.typer.Inferencing$.isFullyDefined(Inferencing.scala:40) [error] dotty.tools.dotc.typer.Implicits.ignoredInstanceNormalImport$1(Implicits.scala:881) [error] dotty.tools.dotc.typer.Implicits.$anonfun$1(Implicits.scala:896) [error] dotty.tools.dotc.typer.ImplicitSearchError.hiddenImplicitsAddendum(ErrorReporting.scala:419) [error] dotty.tools.dotc.typer.ImplicitSearchError.missingArgMsg(ErrorReporting.scala:267) [error] dotty.tools.dotc.typer.Implicits.missingArgMsg(Implicits.scala:897) [error] dotty.tools.dotc.typer.Implicits.missingArgMsg$(Implicits.scala:774) [error] dotty.tools.dotc.typer.Typer.missingArgMsg(Typer.scala:106) [error] dotty.tools.dotc.typer.Typer.issueErrors$1$$anonfun$1$$anonfun$1(Typer.scala:3353) [error] dotty.tools.dotc.reporting.NoExplanation.msg(Message.scala:132) [error] dotty.tools.dotc.reporting.Message.message(Message.scala:87) [error] dotty.tools.dotc.reporting.Message.isNonSensical(Message.scala:99) [error] dotty.tools.dotc.reporting.HideNonSensicalMessages.isHidden(HideNonSensicalMessages.scala:16) [error] dotty.tools.dotc.reporting.HideNonSensicalMessages.isHidden$(HideNonSensicalMessages.scala:10) [error] dotty.tools.dotc.reporting.AbstractReporter.isHidden(AbstractReporter.scala:8) [error] dotty.tools.dotc.reporting.Reporter.report(Reporter.scala:148) [error] dotty.tools.dotc.reporting.Reporter.flush$$anonfun$1(Reporter.scala:206) [error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) [error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) [error] scala.collection.immutable.List.foreach(List.scala:333) [error] dotty.tools.dotc.reporting.Reporter.flush(Reporter.scala:206) [error] dotty.tools.dotc.core.TyperState.commit(TyperState.scala:143) [error] dotty.tools.dotc.typer.Applications.fail$1(Applications.scala:986) [error] dotty.tools.dotc.typer.Applications.realApply$7$$anonfun$6$$anonfun$2(Applications.scala:992) [error] scala.Option.getOrElse(Option.scala:201) [error] dotty.tools.dotc.typer.Applications.realApply$8$$anonfun$7(Applications.scala:993) [error] dotty.tools.dotc.typer.Typer.tryEither(Typer.scala:2952) [error] dotty.tools.dotc.typer.Applications.realApply$1(Applications.scala:994) [error] dotty.tools.dotc.typer.Applications.typedApply(Applications.scala:1032) [error] dotty.tools.dotc.typer.Applications.typedApply$(Applications.scala:317) [error] dotty.tools.dotc.typer.Typer.typedApply(Typer.scala:106) [error] dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2693) [error] dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:2941) [error] dotty.tools.dotc.typer.Typer.typedBlock(Typer.scala:1031) [error] dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2701) [error] dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] dotty.tools.dotc.typer.ProtoTypes$FunProto.$anonfun$6$$anonfun$1(ProtoTypes.scala:384) [error] dotty.tools.dotc.typer.ProtoTypes$FunProto.cacheTypedArg(ProtoTypes.scala:359) [error] dotty.tools.dotc.typer.ProtoTypes$FunProto.$anonfun$7(ProtoTypes.scala:384) [error] dotty.tools.dotc.typer.ProtoTypes$FunProto.$anonfun$adapted$1(ProtoTypes.scala:384) [error] dotty.tools.dotc.core.Decorators$ListDecorator$.loop$3(Decorators.scala:179) [error] dotty.tools.dotc.core.Decorators$ListDecorator$.mapWithIndexConserve$extension(Decorators.scala:186) [error] dotty.tools.dotc.typer.ProtoTypes$FunProto.typedArgs(ProtoTypes.scala:384) [error] dotty.tools.dotc.typer.ProtoTypes$FunProto.isMatchedBy(ProtoTypes.scala:314) [error] dotty.tools.dotc.core.TypeComparer.isMatchedByProto(TypeComparer.scala:1874) [error] dotty.tools.dotc.core.TypeComparer.firstTry$1(TypeComparer.scala:315) [error] dotty.tools.dotc.core.TypeComparer.recur(TypeComparer.scala:1296) [error] dotty.tools.dotc.core.TypeComparer.isSubType(TypeComparer.scala:195) [error] dotty.tools.dotc.core.TypeComparer.isSubType(TypeComparer.scala:205) [error] dotty.tools.dotc.core.TypeComparer.topLevelSubType(TypeComparer.scala:128) [error] dotty.tools.dotc.core.TypeComparer$.topLevelSubType(TypeComparer.scala:2700) [error] dotty.tools.dotc.core.Types$Type.$less$colon$less(Types.scala:1032) [error] dotty.tools.dotc.core.Types$Type.relaxed_$less$colon$less(Types.scala:1064) [error] dotty.tools.dotc.typer.ProtoTypes$Compatibility.isCompatible(ProtoTypes.scala:39) [error] dotty.tools.dotc.typer.ProtoTypes$Compatibility.isCompatible$(ProtoTypes.scala:26) [error] dotty.tools.dotc.typer.ProtoTypes$NoViewsAllowed$.isCompatible(ProtoTypes.scala:120) [error] dotty.tools.dotc.typer.ProtoTypes$Compatibility.testCompat$1(ProtoTypes.scala:56) [error] dotty.tools.dotc.typer.ProtoTypes$Compatibility.normalizedCompatible(ProtoTypes.scala:71) [error] dotty.tools.dotc.typer.ProtoTypes$Compatibility.normalizedCompatible$(ProtoTypes.scala:26) [error] dotty.tools.dotc.typer.ProtoTypes$NoViewsAllowed$.normalizedCompatible(ProtoTypes.scala:120) [error] dotty.tools.dotc.typer.ProtoTypes$SelectionProto.qualifies$1(ProtoTypes.scala:192) [error] dotty.tools.dotc.typer.ProtoTypes$SelectionProto.isMatchedBy(ProtoTypes.scala:196) [error] dotty.tools.dotc.typer.Typer.tryInsertImplicitOnQualifier(Typer.scala:3050) [error] dotty.tools.dotc.typer.Applications.tryWithImplicitOnQualifier$4(Applications.scala:921) [error] dotty.tools.dotc.typer.Applications.realApply$8$$anonfun$7(Applications.scala:991) [error] dotty.tools.dotc.typer.Typer.tryEither(Typer.scala:2952) [error] dotty.tools.dotc.typer.Applications.realApply$1(Applications.scala:994) [error] dotty.tools.dotc.typer.Applications.typedApply(Applications.scala:1032) [error] dotty.tools.dotc.typer.Applications.typedApply$(Applications.scala:317) [error] dotty.tools.dotc.typer.Typer.typedApply(Typer.scala:106) [error] dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2693) [error] dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:2941) [error] dotty.tools.dotc.typer.Typer.typedValDef(Typer.scala:2092) [error] dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:2667) [error] dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2755) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:2847) [error] dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:2897) [error] dotty.tools.dotc.typer.Typer.typedClassDef(Typer.scala:2352) [error] dotty.tools.dotc.typer.Typer.typedTypeOrClassDef$2(Typer.scala:2681) [error] dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:2685) [error] dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2755) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:2847) [error] dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:2897) [error] dotty.tools.dotc.typer.Typer.typedPackageDef(Typer.scala:2475) [error] dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2726) [error] dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:2941) [error] dotty.tools.dotc.typer.FrontEnd.liftedTree1$1(FrontEnd.scala:79) [error] dotty.tools.dotc.typer.FrontEnd.typeCheck$$anonfun$1(FrontEnd.scala:84) [error] dotty.tools.dotc.typer.FrontEnd.monitor(FrontEnd.scala:43) [error] dotty.tools.dotc.typer.FrontEnd.typeCheck(FrontEnd.scala:85) [error] dotty.tools.dotc.typer.FrontEnd.runOn$$anonfun$3(FrontEnd.scala:120) [error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) [error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) [error] scala.collection.immutable.List.foreach(List.scala:333) [error] dotty.tools.dotc.typer.FrontEnd.runOn(FrontEnd.scala:120) [error] dotty.tools.dotc.Run.runPhases$4$$anonfun$4(Run.scala:205) [error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) [error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) [error] scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323) [error] dotty.tools.dotc.Run.runPhases$5(Run.scala:216) [error] dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:224) [error] scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18) [error] dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:67) [error] dotty.tools.dotc.Run.compileUnits(Run.scala:231) [error] dotty.tools.dotc.Run.compileSources(Run.scala:166) [error] dotty.tools.dotc.Run.compile(Run.scala:150) [error] dotty.tools.dotc.Driver.doCompile(Driver.scala:39) [error] dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:88) [error] dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22) [error] sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91) [error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:192) [error] scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) [error] sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:247) [error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:182) [error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163) [error] sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239) [error] sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163) [error] sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:210) [error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:528) [error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:528) [error] sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:175) [error] sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:173) [error] sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:459) [error] sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116) [error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56) [error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52) [error] sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263) [error] sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:414) [error] sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:501) [error] sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:401) [error] sbt.internal.inc.Incremental$.apply(Incremental.scala:167) [error] sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:528) [error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:482) [error] sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332) [error] sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:420) [error] sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137) [error] sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2357) [error] sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2314) [error] sbt.internal.io.Retry$.apply(Retry.scala:46) [error] sbt.internal.io.Retry$.apply(Retry.scala:28) [error] sbt.internal.io.Retry$.apply(Retry.scala:23) [error] sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:31) [error] sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2310) [error] scala.Function1.$anonfun$compose$1(Function1.scala:49) [error] sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62) [error] sbt.std.Transform$$anon$4.work(Transform.scala:68) [error] sbt.Execute.$anonfun$submit$2(Execute.scala:282) [error] sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23) [error] sbt.Execute.work(Execute.scala:291) [error] sbt.Execute.$anonfun$submit$1(Execute.scala:282) [error] sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265) [error] sbt.CompletionService$$anon$2.call(CompletionService.scala:64) [error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) [error] java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) [error] java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [error] java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [error] java.base/java.lang.Thread.run(Thread.java:834) [error] [error] java.lang.AssertionError: assertion failed: Attempt to commit TS[11888X, 11724X, 11481X, 11061X, 10149, 2, 1, 0] into already committed TS[11724X, 11481X, 11061X, 10149, 2, 1, 0] [error] at scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8) [error] at dotty.tools.dotc.core.TyperState.commit(TyperState.scala:146) [error] at dotty.tools.dotc.typer.Inferencing$.isFullyDefined(Inferencing.scala:40) [error] at dotty.tools.dotc.typer.Implicits.ignoredInstanceNormalImport$1(Implicits.scala:881) [error] at dotty.tools.dotc.typer.Implicits.$anonfun$1(Implicits.scala:896) [error] at dotty.tools.dotc.typer.ImplicitSearchError.hiddenImplicitsAddendum(ErrorReporting.scala:419) [error] at dotty.tools.dotc.typer.ImplicitSearchError.missingArgMsg(ErrorReporting.scala:267) [error] at dotty.tools.dotc.typer.Implicits.missingArgMsg(Implicits.scala:897) [error] at dotty.tools.dotc.typer.Implicits.missingArgMsg$(Implicits.scala:774) [error] at dotty.tools.dotc.typer.Typer.missingArgMsg(Typer.scala:106) [error] at dotty.tools.dotc.typer.Typer.issueErrors$1$$anonfun$1$$anonfun$1(Typer.scala:3353) [error] at dotty.tools.dotc.reporting.NoExplanation.msg(Message.scala:132) [error] at dotty.tools.dotc.reporting.Message.message(Message.scala:87) [error] at dotty.tools.dotc.reporting.Message.isNonSensical(Message.scala:99) [error] at dotty.tools.dotc.reporting.HideNonSensicalMessages.isHidden(HideNonSensicalMessages.scala:16) [error] at dotty.tools.dotc.reporting.HideNonSensicalMessages.isHidden$(HideNonSensicalMessages.scala:10) [error] at dotty.tools.dotc.reporting.AbstractReporter.isHidden(AbstractReporter.scala:8) [error] at dotty.tools.dotc.reporting.Reporter.report(Reporter.scala:148) [error] at dotty.tools.dotc.reporting.Reporter.flush$$anonfun$1(Reporter.scala:206) [error] at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) [error] at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) [error] at scala.collection.immutable.List.foreach(List.scala:333) [error] at dotty.tools.dotc.reporting.Reporter.flush(Reporter.scala:206) [error] at dotty.tools.dotc.core.TyperState.commit(TyperState.scala:143) [error] at dotty.tools.dotc.typer.Applications.fail$1(Applications.scala:986) [error] at dotty.tools.dotc.typer.Applications.realApply$7$$anonfun$6$$anonfun$2(Applications.scala:992) [error] at scala.Option.getOrElse(Option.scala:201) [error] at dotty.tools.dotc.typer.Applications.realApply$8$$anonfun$7(Applications.scala:993) [error] at dotty.tools.dotc.typer.Typer.tryEither(Typer.scala:2952) [error] at dotty.tools.dotc.typer.Applications.realApply$1(Applications.scala:994) [error] at dotty.tools.dotc.typer.Applications.typedApply(Applications.scala:1032) [error] at dotty.tools.dotc.typer.Applications.typedApply$(Applications.scala:317) [error] at dotty.tools.dotc.typer.Typer.typedApply(Typer.scala:106) [error] at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2693) [error] at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:2941) [error] at dotty.tools.dotc.typer.Typer.typedBlock(Typer.scala:1031) [error] at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2701) [error] at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] at dotty.tools.dotc.typer.ProtoTypes$FunProto.$anonfun$6$$anonfun$1(ProtoTypes.scala:384) [error] at dotty.tools.dotc.typer.ProtoTypes$FunProto.cacheTypedArg(ProtoTypes.scala:359) [error] at dotty.tools.dotc.typer.ProtoTypes$FunProto.$anonfun$7(ProtoTypes.scala:384) [error] at dotty.tools.dotc.typer.ProtoTypes$FunProto.$anonfun$adapted$1(ProtoTypes.scala:384) [error] at dotty.tools.dotc.core.Decorators$ListDecorator$.loop$3(Decorators.scala:179) [error] at dotty.tools.dotc.core.Decorators$ListDecorator$.mapWithIndexConserve$extension(Decorators.scala:186) [error] at dotty.tools.dotc.typer.ProtoTypes$FunProto.typedArgs(ProtoTypes.scala:384) [error] at dotty.tools.dotc.typer.ProtoTypes$FunProto.isMatchedBy(ProtoTypes.scala:314) [error] at dotty.tools.dotc.core.TypeComparer.isMatchedByProto(TypeComparer.scala:1874) [error] at dotty.tools.dotc.core.TypeComparer.firstTry$1(TypeComparer.scala:315) [error] at dotty.tools.dotc.core.TypeComparer.recur(TypeComparer.scala:1296) [error] at dotty.tools.dotc.core.TypeComparer.isSubType(TypeComparer.scala:195) [error] at dotty.tools.dotc.core.TypeComparer.isSubType(TypeComparer.scala:205) [error] at dotty.tools.dotc.core.TypeComparer.topLevelSubType(TypeComparer.scala:128) [error] at dotty.tools.dotc.core.TypeComparer$.topLevelSubType(TypeComparer.scala:2700) [error] at dotty.tools.dotc.core.Types$Type.$less$colon$less(Types.scala:1032) [error] at dotty.tools.dotc.core.Types$Type.relaxed_$less$colon$less(Types.scala:1064) [error] at dotty.tools.dotc.typer.ProtoTypes$Compatibility.isCompatible(ProtoTypes.scala:39) [error] at dotty.tools.dotc.typer.ProtoTypes$Compatibility.isCompatible$(ProtoTypes.scala:26) [error] at dotty.tools.dotc.typer.ProtoTypes$NoViewsAllowed$.isCompatible(ProtoTypes.scala:120) [error] at dotty.tools.dotc.typer.ProtoTypes$Compatibility.testCompat$1(ProtoTypes.scala:56) [error] at dotty.tools.dotc.typer.ProtoTypes$Compatibility.normalizedCompatible(ProtoTypes.scala:71) [error] at dotty.tools.dotc.typer.ProtoTypes$Compatibility.normalizedCompatible$(ProtoTypes.scala:26) [error] at dotty.tools.dotc.typer.ProtoTypes$NoViewsAllowed$.normalizedCompatible(ProtoTypes.scala:120) [error] at dotty.tools.dotc.typer.ProtoTypes$SelectionProto.qualifies$1(ProtoTypes.scala:192) [error] at dotty.tools.dotc.typer.ProtoTypes$SelectionProto.isMatchedBy(ProtoTypes.scala:196) [error] at dotty.tools.dotc.typer.Typer.tryInsertImplicitOnQualifier(Typer.scala:3050) [error] at dotty.tools.dotc.typer.Applications.tryWithImplicitOnQualifier$4(Applications.scala:921) [error] at dotty.tools.dotc.typer.Applications.realApply$8$$anonfun$7(Applications.scala:991) [error] at dotty.tools.dotc.typer.Typer.tryEither(Typer.scala:2952) [error] at dotty.tools.dotc.typer.Applications.realApply$1(Applications.scala:994) [error] at dotty.tools.dotc.typer.Applications.typedApply(Applications.scala:1032) [error] at dotty.tools.dotc.typer.Applications.typedApply$(Applications.scala:317) [error] at dotty.tools.dotc.typer.Typer.typedApply(Typer.scala:106) [error] at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2693) [error] at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:2941) [error] at dotty.tools.dotc.typer.Typer.typedValDef(Typer.scala:2092) [error] at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:2667) [error] at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2755) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:2847) [error] at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:2897) [error] at dotty.tools.dotc.typer.Typer.typedClassDef(Typer.scala:2352) [error] at dotty.tools.dotc.typer.Typer.typedTypeOrClassDef$2(Typer.scala:2681) [error] at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:2685) [error] at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2755) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:2847) [error] at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:2897) [error] at dotty.tools.dotc.typer.Typer.typedPackageDef(Typer.scala:2475) [error] at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2726) [error] at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821) [error] at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825) [error] at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:2941) [error] at dotty.tools.dotc.typer.FrontEnd.liftedTree1$1(FrontEnd.scala:79) [error] at dotty.tools.dotc.typer.FrontEnd.typeCheck$$anonfun$1(FrontEnd.scala:84) [error] at dotty.tools.dotc.typer.FrontEnd.monitor(FrontEnd.scala:43) [error] at dotty.tools.dotc.typer.FrontEnd.typeCheck(FrontEnd.scala:85) [error] at dotty.tools.dotc.typer.FrontEnd.runOn$$anonfun$3(FrontEnd.scala:120) [error] at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) [error] at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) [error] at scala.collection.immutable.List.foreach(List.scala:333) [error] at dotty.tools.dotc.typer.FrontEnd.runOn(FrontEnd.scala:120) [error] at dotty.tools.dotc.Run.runPhases$4$$anonfun$4(Run.scala:205) [error] at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) [error] at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) [error] at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323) [error] at dotty.tools.dotc.Run.runPhases$5(Run.scala:216) [error] at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:224) [error] at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18) [error] at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:67) [error] at dotty.tools.dotc.Run.compileUnits(Run.scala:231) [error] at dotty.tools.dotc.Run.compileSources(Run.scala:166) [error] at dotty.tools.dotc.Run.compile(Run.scala:150) [error] at dotty.tools.dotc.Driver.doCompile(Driver.scala:39) [error] at dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:88) [error] at dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22) [error] at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91) [error] at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:192) [error] at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) [error] at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:247) [error] at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:182) [error] at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163) [error] at sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239) [error] at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163) [error] at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:210) [error] at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:528) [error] at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:528) [error] at sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:175) [error] at sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:173) [error] at sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:459) [error] at sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116) [error] at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56) [error] at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52) [error] at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263) [error] at sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:414) [error] at sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:501) [error] at sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:401) [error] at sbt.internal.inc.Incremental$.apply(Incremental.scala:167) [error] at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:528) [error] at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:482) [error] at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332) [error] at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:420) [error] at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137) [error] at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2357) [error] at sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2314) [error] at sbt.internal.io.Retry$.apply(Retry.scala:46) [error] at sbt.internal.io.Retry$.apply(Retry.scala:28) [error] at sbt.internal.io.Retry$.apply(Retry.scala:23) [error] at sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:31) [error] at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2310) [error] at scala.Function1.$anonfun$compose$1(Function1.scala:49) [error] at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62) [error] at sbt.std.Transform$$anon$4.work(Transform.scala:68) [error] at sbt.Execute.$anonfun$submit$2(Execute.scala:282) [error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23) [error] at sbt.Execute.work(Execute.scala:291) [error] at sbt.Execute.$anonfun$submit$1(Execute.scala:282) [error] at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265) [error] at sbt.CompletionService$$anon$2.call(CompletionService.scala:64) [error] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) [error] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [error] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) [error] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [error] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [error] at java.base/java.lang.Thread.run(Thread.java:834) [error] (Compile / compileIncremental) java.lang.AssertionError: assertion failed: Attempt to commit TS[11888X, 11724X, 11481X, 11061X, 10149, 2, 1, 0] into already committed TS[11724X, 11481X, 11061X, 10149, 2, 1, 0] [error] Total time: 6 s, completed 19 Jul. 2021, 7:39:34 pm ```
smarter commented 3 years ago

Looks like we'll have to drop or relax the assert (by adding || ctx.reporter.errorsReported?) at https://github.com/lampepfl/dotty/blob/cc47c561aaad004e56d25f2388058c0e69356a58/compiler/src/dotty/tools/dotc/core/TyperState.scala#L146 because some error messages can capture a context containing a TyperState that is already committed, and forcing the error can end up creating and committing a TyperState into that already committed TyperState.

griggt commented 3 years ago

A self-contained reproducer:

trait Vehicle
trait Car extends Vehicle

trait Encoder[A]
object Encoder {
  implicit val encodeVehicle: Encoder[Vehicle] = ???
  implicit val encodeCar: Encoder[Car] = ???
}

trait Route
trait Printer
trait Marshaller[-A]  // must be contravariant

object Test {
  implicit def marshaller[A: Encoder](implicit p: Printer = ???): Marshaller[A] = ???
    // the `Printer` implicit arg seems to be necessary, either with default value, or no implicit in scope

  def foo[A](v: A)(implicit m: Marshaller[A]): Route = ???

  val route: Route = identity {
    val f: (Car => Route) => Route = ???  // ok if s/Car/Vehicle/
    f(vehicle => foo(vehicle))
  }
}
$ dotc -version
Scala compiler version 3.0.3-RC1-bin-SNAPSHOT-git-cc47c56 -- Copyright 2002-2021, LAMP/EPFL

$ dotc i13101.scala
exception occurred while typechecking i13101.scala
exception occurred while compiling i13101.scala
java.lang.AssertionError: assertion failed: Attempt to commit TS[203X, 18X, 16, 1, 0] into already committed TS[18X, 16, 1, 0] while compiling i13101.scala
Exception in thread "main" java.lang.AssertionError: assertion failed: Attempt to commit TS[203X, 18X, 16, 1, 0] into already committed TS[18X, 16, 1, 0]
    at scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8)
    at dotty.tools.dotc.core.TyperState.commit(TyperState.scala:146)
    at dotty.tools.dotc.typer.Inferencing$.isFullyDefined(Inferencing.scala:40)
    at dotty.tools.dotc.typer.Implicits.ignoredInstanceNormalImport$1(Implicits.scala:881)
    at dotty.tools.dotc.typer.Implicits.$anonfun$1(Implicits.scala:896)
    at dotty.tools.dotc.typer.ImplicitSearchError.hiddenImplicitsAddendum(ErrorReporting.scala:419)
    at dotty.tools.dotc.typer.ImplicitSearchError.missingArgMsg(ErrorReporting.scala:267)
    at dotty.tools.dotc.typer.Implicits.missingArgMsg(Implicits.scala:897)
    at dotty.tools.dotc.typer.Implicits.missingArgMsg$(Implicits.scala:774)
    at dotty.tools.dotc.typer.Typer.missingArgMsg(Typer.scala:106)
    at dotty.tools.dotc.typer.Typer.issueErrors$1$$anonfun$1$$anonfun$1(Typer.scala:3353)
    at dotty.tools.dotc.reporting.NoExplanation.msg(Message.scala:132)
    at dotty.tools.dotc.reporting.Message.message(Message.scala:87)
    at dotty.tools.dotc.reporting.Message.isNonSensical(Message.scala:99)
    at dotty.tools.dotc.reporting.HideNonSensicalMessages.isHidden(HideNonSensicalMessages.scala:16)
    at dotty.tools.dotc.reporting.HideNonSensicalMessages.isHidden$(HideNonSensicalMessages.scala:10)
    at dotty.tools.dotc.reporting.AbstractReporter.isHidden(AbstractReporter.scala:8)
    at dotty.tools.dotc.reporting.Reporter.report(Reporter.scala:148)
    at dotty.tools.dotc.reporting.Reporter.flush$$anonfun$1(Reporter.scala:206)
    at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
    at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
    at scala.collection.immutable.List.foreach(List.scala:333)
    at dotty.tools.dotc.reporting.Reporter.flush(Reporter.scala:206)
    at dotty.tools.dotc.core.TyperState.commit(TyperState.scala:143)
    at dotty.tools.dotc.typer.Applications.fail$1(Applications.scala:986)
    at dotty.tools.dotc.typer.Applications.realApply$7$$anonfun$6$$anonfun$2(Applications.scala:992)
    at scala.Option.getOrElse(Option.scala:201)
    at dotty.tools.dotc.typer.Applications.realApply$8$$anonfun$7(Applications.scala:993)
    at dotty.tools.dotc.typer.Typer.tryEither(Typer.scala:2952)
    at dotty.tools.dotc.typer.Applications.realApply$1(Applications.scala:994)
    at dotty.tools.dotc.typer.Applications.typedApply(Applications.scala:1032)
    at dotty.tools.dotc.typer.Applications.typedApply$(Applications.scala:317)
    at dotty.tools.dotc.typer.Typer.typedApply(Typer.scala:106)
    at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2693)
    at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756)
    at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821)
    at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825)
    at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:2941)
    at dotty.tools.dotc.typer.Typer.typedValDef(Typer.scala:2092)
    at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:2667)
    at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2755)
    at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821)
    at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825)
    at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:2847)
    at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:2897)
    at dotty.tools.dotc.typer.Typer.typedClassDef(Typer.scala:2352)
    at dotty.tools.dotc.typer.Typer.typedTypeOrClassDef$2(Typer.scala:2681)
    at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:2685)
    at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2755)
    at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821)
    at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825)
    at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:2847)
    at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:2897)
    at dotty.tools.dotc.typer.Typer.typedPackageDef(Typer.scala:2475)
    at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2726)
    at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2756)
    at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2821)
    at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2825)
    at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:2941)
    at dotty.tools.dotc.typer.FrontEnd.liftedTree1$1(FrontEnd.scala:79)
    at dotty.tools.dotc.typer.FrontEnd.typeCheck$$anonfun$1(FrontEnd.scala:84)
    at dotty.tools.dotc.typer.FrontEnd.monitor(FrontEnd.scala:43)
    at dotty.tools.dotc.typer.FrontEnd.typeCheck(FrontEnd.scala:85)
    at dotty.tools.dotc.typer.FrontEnd.runOn$$anonfun$3(FrontEnd.scala:120)
    at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
    at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
    at scala.collection.immutable.List.foreach(List.scala:333)
    at dotty.tools.dotc.typer.FrontEnd.runOn(FrontEnd.scala:120)
    at dotty.tools.dotc.Run.runPhases$4$$anonfun$4(Run.scala:205)
    at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
    at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
    at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323)
    at dotty.tools.dotc.Run.runPhases$5(Run.scala:216)
    at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:224)
    at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)
    at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:67)
    at dotty.tools.dotc.Run.compileUnits(Run.scala:231)
    at dotty.tools.dotc.Run.compileSources(Run.scala:166)
    at dotty.tools.dotc.Run.compile(Run.scala:150)
    at dotty.tools.dotc.Driver.doCompile(Driver.scala:39)
    at dotty.tools.dotc.Driver.process(Driver.scala:199)
    at dotty.tools.dotc.Driver.process(Driver.scala:167)
    at dotty.tools.dotc.Driver.process(Driver.scala:179)
    at dotty.tools.dotc.Driver.main(Driver.scala:209)
    at dotty.tools.dotc.Main.main(Main.scala)