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Closed
xuwei-k opened this issue Jul 22, 2022 · 3 comments · Fixed by #16314
Closed

UnsupportedOperationException: cloneScope #15726

xuwei-k opened this issue Jul 22, 2022 · 3 comments · Fixed by #16314
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area:erasure itype:bug itype:crash stat:needs minimization Needs a self contained minimization

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@xuwei-k
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xuwei-k commented Jul 22, 2022

Compiler version

  • 3.2.1-RC1-bin-20220720-6c7acf9-NIGHTLY
  • 3.2.0-RC2
  • 3.1.3

Minimized code

build.sbt

scalaVersion := "3.2.1-RC1-bin-20220720-6c7acf9-NIGHTLY"

libraryDependencies += "com.chuusai" %% "shapeless" % "2.3.9" cross CrossVersion.for3Use2_13

Main.scala

import shapeless._

object f extends Poly1 {
  implicit def intToString: Case.Aux[Int, String] = at(_.toString)
}

object Main {
  def main(args: Array[String]): Unit = {
    val list = 2 :: 3 :: HNil
    println(list.map(f))
  }
}

Output (click arrow to expand)

java.lang.UnsupportedOperationException: cloneScope while compiling /Users/kenji/scala-3-shapeless-2/Main.scala
[error] ## Exception when compiling 1 sources to /Users/kenji/scala-3-shapeless-2/target/scala-3.2.1-RC1-bin-20220720-6c7acf9-NIGHTLY/classes
[error] java.lang.UnsupportedOperationException: cloneScope
[error] dotty.tools.package$.unsupported(package.scala:13)
[error] dotty.tools.dotc.core.Scopes$EmptyScope$.cloneScope(Scopes.scala:470)
[error] dotty.tools.dotc.transform.ExplicitOuter.transformInfo(ExplicitOuter.scala:52)
[error] dotty.tools.dotc.core.DenotTransformers$InfoTransformer.transform(DenotTransformers.scala:42)
[error] dotty.tools.dotc.core.DenotTransformers$InfoTransformer.transform$(DenotTransformers.scala:34)
[error] dotty.tools.dotc.transform.ExplicitOuter.transform(ExplicitOuter.scala:36)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:833)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:120)
[error] dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:114)
[error] dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:107)
[error] dotty.tools.dotc.transform.ValueClasses$.isDerivedValueClass(ValueClasses.scala:17)
[error] dotty.tools.dotc.core.TypeErasure.dotty$tools$dotc$core$TypeErasure$$apply(TypeErasure.scala:595)
[error] dotty.tools.dotc.core.TypeErasure.paramErasure$1(TypeErasure.scala:640)
[error] dotty.tools.dotc.core.TypeErasure.$anonfun$1(TypeErasure.scala:642)
[error] scala.collection.immutable.List.mapConserve(List.scala:472)
[error] dotty.tools.dotc.core.TypeErasure.dotty$tools$dotc$core$TypeErasure$$apply(TypeErasure.scala:642)
[error] dotty.tools.dotc.core.TypeErasure.eraseResult(TypeErasure.scala:805)
[error] dotty.tools.dotc.core.TypeErasure.dotty$tools$dotc$core$TypeErasure$$apply(TypeErasure.scala:643)
[error] dotty.tools.dotc.core.TypeErasure.eraseInfo(TypeErasure.scala:745)
[error] dotty.tools.dotc.core.TypeErasure$.transformInfo(TypeErasure.scala:244)
[error] dotty.tools.dotc.transform.Erasure.transform(Erasure.scala:97)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:833)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:120)
[error] dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:114)
[error] dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:107)
[error] dotty.tools.dotc.core.Symbols$.toDenot(Symbols.scala:497)
[error] dotty.tools.dotc.transform.Mixin.needsTraitSetter(Mixin.scala:170)
[error] dotty.tools.dotc.transform.Mixin.transformSym$$anonfun$1(Mixin.scala:149)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:333)
[error] dotty.tools.dotc.core.Scopes$Scope.foreach(Scopes.scala:93)
[error] dotty.tools.dotc.transform.Mixin.transformSym(Mixin.scala:153)
[error] dotty.tools.dotc.core.DenotTransformers$SymTransformer.transform(DenotTransformers.scala:70)
[error] dotty.tools.dotc.core.DenotTransformers$SymTransformer.transform$(DenotTransformers.scala:65)
[error] dotty.tools.dotc.transform.Mixin.transform(Mixin.scala:109)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:833)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:853)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:882)
[error] dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:120)
[error] dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:114)
[error] dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:107)
[error] dotty.tools.dotc.core.Symbols$ClassSymbol.classDenot(Symbols.scala:460)
[error] dotty.tools.dotc.core.Symbols$.toClassDenot(Symbols.scala:500)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.$anonfun$1(BTypesFromSymbols.scala:141)
[error] scala.collection.Iterator$$anon$10.nextCur(Iterator.scala:587)
[error] scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:601)
[error] scala.collection.mutable.Growable.addAll(Growable.scala:61)
[error] scala.collection.mutable.Growable.addAll$(Growable.scala:57)
[error] scala.collection.immutable.SetBuilderImpl.addAll(Set.scala:396)
[error] scala.collection.immutable.Set$.from(Set.scala:353)
[error] scala.collection.IterableOnceOps.toSet(IterableOnce.scala:1258)
[error] scala.collection.IterableOnceOps.toSet$(IterableOnce.scala:1258)
[error] scala.collection.AbstractIterator.toSet(Iterator.scala:1293)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.superInterfaces$1(BTypesFromSymbols.scala:141)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.setClassInfo(BTypesFromSymbols.scala:149)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol$$anonfun$1(BTypesFromSymbols.scala:91)
[error] scala.collection.mutable.HashMap.getOrElse(HashMap.scala:436)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol(BTypesFromSymbols.scala:92)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.buildNestedInfo(BTypesFromSymbols.scala:245)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.setClassInfo(BTypesFromSymbols.scala:203)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol$$anonfun$1(BTypesFromSymbols.scala:91)
[error] scala.collection.mutable.HashMap.getOrElse(HashMap.scala:436)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol(BTypesFromSymbols.scala:92)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.$anonfun$4(BTypesFromSymbols.scala:149)
[error] scala.collection.immutable.List.map(List.scala:246)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.setClassInfo(BTypesFromSymbols.scala:149)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol$$anonfun$1(BTypesFromSymbols.scala:91)
[error] scala.collection.mutable.HashMap.getOrElse(HashMap.scala:436)
[error] dotty.tools.backend.jvm.BTypesFromSymbols.classBTypeFromSymbol(BTypesFromSymbols.scala:92)
[error] dotty.tools.backend.jvm.BCodeHelpers$BCInnerClassGen.getClassBType(BCodeHelpers.scala:261)
[error] dotty.tools.backend.jvm.BCodeHelpers$BCInnerClassGen.getClassBType$(BCodeHelpers.scala:213)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.getClassBType(BCodeSkelBuilder.scala:74)
[error] dotty.tools.backend.jvm.BCodeHelpers.primitiveOrClassToBType$1$$anonfun$1(BCodeHelpers.scala:798)
[error] scala.collection.immutable.HashMap.getOrElse(HashMap.scala:683)
[error] dotty.tools.backend.jvm.BCodeHelpers.primitiveOrClassToBType$1(BCodeHelpers.scala:798)
[error] dotty.tools.backend.jvm.BCodeHelpers.dotty$tools$backend$jvm$BCodeHelpers$$typeToTypeKind(BCodeHelpers.scala:817)
[error] dotty.tools.backend.jvm.BCodeHelpers$BCInnerClassGen.toTypeKind(BCodeHelpers.scala:285)
[error] dotty.tools.backend.jvm.BCodeHelpers$BCInnerClassGen.toTypeKind$(BCodeHelpers.scala:213)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.toTypeKind(BCodeSkelBuilder.scala:74)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.paramTKs$$anonfun$1(BCodeSkelBuilder.scala:99)
[error] scala.collection.immutable.List.map(List.scala:250)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.paramTKs(BCodeSkelBuilder.scala:99)
[error] dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genApply(BCodeBodyBuilder.scala:802)
[error] dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoadTo(BCodeBodyBuilder.scala:369)
[error] dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoad(BCodeBodyBuilder.scala:290)
[error] dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoadArguments(BCodeBodyBuilder.scala:1166)
[error] dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genApply(BCodeBodyBuilder.scala:802)
[error] dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoadTo(BCodeBodyBuilder.scala:369)
[error] dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genBlockTo(BCodeBodyBuilder.scala:1053)
[error] dotty.tools.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoadTo(BCodeBodyBuilder.scala:441)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.emitNormalMethodBody$1(BCodeSkelBuilder.scala:809)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.genDefDef(BCodeSkelBuilder.scala:832)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen(BCodeSkelBuilder.scala:615)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen$$anonfun$1(BCodeSkelBuilder.scala:621)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:333)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen(BCodeSkelBuilder.scala:621)
[error] dotty.tools.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.genPlainClass(BCodeSkelBuilder.scala:233)
[error] dotty.tools.backend.jvm.GenBCodePipeline$Worker1.visit(GenBCode.scala:266)
[error] dotty.tools.backend.jvm.GenBCodePipeline$Worker1.run(GenBCode.scala:231)
[error] dotty.tools.backend.jvm.GenBCodePipeline.buildAndSendToDisk(GenBCode.scala:598)
[error] dotty.tools.backend.jvm.GenBCodePipeline.run(GenBCode.scala:564)
[error] dotty.tools.backend.jvm.GenBCode.run(GenBCode.scala:69)
[error] dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:311)
[error] scala.collection.immutable.List.map(List.scala:246)
[error] dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:312)
[error] dotty.tools.backend.jvm.GenBCode.runOn(GenBCode.scala:77)
[error] dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:234)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1328)
[error] dotty.tools.dotc.Run.runPhases$1(Run.scala:245)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:253)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:262)
[error] dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:68)
[error] dotty.tools.dotc.Run.compileUnits(Run.scala:262)
[error] dotty.tools.dotc.Run.compileSources(Run.scala:186)
[error] dotty.tools.dotc.Run.compile(Run.scala:170)
[error] dotty.tools.dotc.Driver.doCompile(Driver.scala:35)
[error] dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:88)
[error] dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
[error] sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:192)
[error] scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[error] sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:247)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:182)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163)
[error] sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:210)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:528)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:528)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:177)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:175)
[error] sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:461)
[error] sbt.internal.inc.IncrementalCommon$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$8(Incremental.scala:416)
[error] sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:503)
[error] sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:403)
[error] sbt.internal.inc.Incremental$.apply(Incremental.scala:169)
[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:2366)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2316)
[error] sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:30)
[error] sbt.internal.io.Retry$.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$.compute(BspCompileTask.scala:30)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2314)
[error] scala.Function1.$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:829)
[error]            
[error] stack trace is suppressed; run last Compile / compileIncremental for the full output
[error] (Compile / compileIncremental) java.lang.UnsupportedOperationException: cloneScope
@xuwei-k xuwei-k added itype:bug itype:crash stat:needs triage Every issue needs to have an "area" and "itype" label labels Jul 22, 2022
@szymon-rd szymon-rd added area:erasure and removed stat:needs triage Every issue needs to have an "area" and "itype" label labels Jul 22, 2022
@KacperFKorban KacperFKorban added the stat:needs minimization Needs a self contained minimization label Jul 22, 2022
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@xuwei-k Can you please attempt minimizing it, so it doesn't depend on shapeless?

@dwijnand dwijnand linked a pull request Nov 10, 2022 that will close this issue
Avoid EmptyScope.cloneScope crashing, eg on missing references #16314
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smarter commented Nov 14, 2022

While this shouldn't crash, note that the real issue here is not caused by the compiler, in the compiler output before the crash I see:

***** missing reference, looking for Aliases/T in package scala.reflect.macros

This problem goes away if I add scala-reflect to the classpath. It seems that shapeless does not explicitly depend on scala-reflect even though it has methods whose signatures refer to types defined in scala-reflect. Maybe this works in Scala 2 by chance because scala-reflect is always on the classpath.

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Yeah, shapeless says that scala-reflect is "provided". I forget what that implies in terms of the compilation classpath. So either also a build error by shapeless or a build tool bug.

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Avoid EmptyScope.cloneScope crashing, eg on missing references dwijnand/scala3
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@smarter @dwijnand @xuwei-k @szymon-rd @KacperFKorban