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Dotty crashes when defined a Polymorphic function type value with a By-Name parameter. #21713

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RayStarkMC opened this issue Oct 6, 2024 · 1 comment
Closed

Dotty crashes when defined a Polymorphic function type value with a By-Name parameter. #21713

RayStarkMC opened this issue Oct 6, 2024 · 1 comment
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itype:bug itype:crash stat:needs triage Every issue needs to have an "area" and "itype" label

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@RayStarkMC
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Compiler version

3.5.2-RC1

Minimized code

val a: [A] => (=> A) => Unit = [A] => a => ()

Output (click arrow to expand)

java.lang.AssertionError: assertion failed: Not a valid PolyFunction refinement: PolyType(List(A), List(TypeBounds(TypeRef(ThisType(TypeRef(NoPrefix,module class scala)),class Nothing),TypeRef(ThisType(TypeRef(NoPrefix,module class scala)),class Any))), MethodType(List(a), List(ExprType(TypeParamRef(A))), TypeRef(TermRef(ThisType(TypeRef(NoPrefix,module class <root>)),object scala),class Unit)))
	at scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8)
	at dotty.tools.dotc.core.Definitions$PolyFunctionOf$.apply(Definitions.scala:1205)
	at dotty.tools.dotc.core.Types$Type.toFunctionType(Types.scala:1979)
	at dotty.tools.dotc.typer.TypeAssigner.assignType(TypeAssigner.scala:425)
	at dotty.tools.dotc.typer.TypeAssigner.assignType$(TypeAssigner.scala:16)
	at dotty.tools.dotc.typer.Typer.assignType(Typer.scala:145)
	at dotty.tools.dotc.typer.Typer.typedClosure(Typer.scala:1975)
	at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:3427)
	at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3500)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3577)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3581)
	at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:3692)
	at dotty.tools.dotc.typer.Typer.typedBlock(Typer.scala:1406)
	at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:3423)
	at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3500)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3577)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3581)
	at dotty.tools.dotc.typer.Typer.typedPolyFunctionValue(Typer.scala:1917)
	at dotty.tools.dotc.typer.Typer.typedPolyFunction(Typer.scala:1891)
	at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:3426)
	at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3500)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3577)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3581)
	at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:3692)
	at dotty.tools.dotc.typer.Typer.typedValDef(Typer.scala:2771)
	at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:3394)
	at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3499)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3577)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3581)
	at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:3603)
	at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:3649)
	at dotty.tools.dotc.typer.Typer.typedClassDef(Typer.scala:3097)
	at dotty.tools.dotc.typer.Typer.typedTypeOrClassDef$1(Typer.scala:3403)
	at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:3407)
	at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3499)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3577)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3581)
	at dotty.tools.dotc.typer.Typer.traverse$1(Typer.scala:3603)
	at dotty.tools.dotc.typer.Typer.typedStats(Typer.scala:3649)
	at dotty.tools.dotc.typer.Typer.typedPackageDef(Typer.scala:3230)
	at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:3449)
	at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:3500)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3577)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:3581)
	at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:3692)
	at dotty.tools.dotc.typer.TyperPhase.typeCheck$$anonfun$1(TyperPhase.scala:47)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at dotty.tools.dotc.core.Phases$Phase.monitor(Phases.scala:503)
	at dotty.tools.dotc.typer.TyperPhase.typeCheck(TyperPhase.scala:53)
	at dotty.tools.dotc.typer.TyperPhase.$anonfun$4(TyperPhase.scala:99)
	at scala.collection.Iterator$$anon$6.hasNext(Iterator.scala:479)
	at scala.collection.Iterator$$anon$9.hasNext(Iterator.scala:583)
	at scala.collection.immutable.List.prependedAll(List.scala:152)
	at scala.collection.immutable.List$.from(List.scala:685)
	at scala.collection.immutable.List$.from(List.scala:682)
	at scala.collection.IterableOps$WithFilter.map(Iterable.scala:900)
	at dotty.tools.dotc.typer.TyperPhase.runOn(TyperPhase.scala:98)
	at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:343)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323)
	at dotty.tools.dotc.Run.runPhases$1(Run.scala:336)
	at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:384)
	at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:396)
	at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
	at dotty.tools.dotc.Run.compileUnits(Run.scala:396)
	at dotty.tools.dotc.Run.compileSources(Run.scala:282)
	at dotty.tools.dotc.Run.compile(Run.scala:267)
	at dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
	at dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)
	at dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
	at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:193)
	at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
	at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:248)
	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:183)
	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163)
	at sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239)
	at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163)
	at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:211)
	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:534)
	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:534)
	at sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:180)
	at sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:178)
	at sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:464)
	at sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
	at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
	at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
	at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263)
	at sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:419)
	at sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:506)
	at sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:406)
	at sbt.internal.inc.Incremental$.apply(Incremental.scala:172)
	at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:534)
	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:488)
	at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
	at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:425)
	at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
	at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2371)
	at sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2321)
	at sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:31)
	at sbt.internal.io.Retry$.apply(Retry.scala:47)
	at sbt.internal.io.Retry$.apply(Retry.scala:29)
	at sbt.internal.io.Retry$.apply(Retry.scala:24)
	at sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:31)
	at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2319)
	at scala.Function1.$anonfun$compose$1(Function1.scala:49)
	at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:63)
	at sbt.std.Transform$$anon$4.work(Transform.scala:69)
	at sbt.Execute.$anonfun$submit$2(Execute.scala:283)
	at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:24)
	at sbt.Execute.work(Execute.scala:292)
	at sbt.Execute.$anonfun$submit$1(Execute.scala:283)
	at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
	at sbt.CompletionService$$anon$2.call(CompletionService.scala:65)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:840)
@RayStarkMC RayStarkMC added itype:bug itype:crash stat:needs triage Every issue needs to have an "area" and "itype" label labels Oct 6, 2024
@RayStarkMC
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(Translated by MT.)

I found a duplicate issue with this issue and will close it.

My apologies.

#21652

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