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StackOverflowError in adapt crashes typechecker #7057

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scabug opened this issue Feb 1, 2013 · 5 comments
Closed

StackOverflowError in adapt crashes typechecker #7057

scabug opened this issue Feb 1, 2013 · 5 comments
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@retronym
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duplicate typer
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2.10.1

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@scabug
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scabug commented Feb 1, 2013

I'm sorry I can't give more details, but hopefully this can still be enough to track an infinite recursion case.

java.lang.StackOverflowError
	at scala.reflect.internal.Types$InstantiateDependentMap$$anonfun$existentialsNeeded$1.apply(Types.scala:4759)
	at scala.reflect.internal.Types$InstantiateDependentMap$$anonfun$existentialsNeeded$1.apply(Types.scala:4759)
	at scala.collection.TraversableLike$$anonfun$filter$1.apply(TraversableLike.scala:264)
	at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
	at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:105)
	at scala.collection.TraversableLike$class.filter(TraversableLike.scala:263)
	at scala.collection.mutable.ArrayOps$ofRef.filter(ArrayOps.scala:105)
	at scala.reflect.internal.Types$InstantiateDependentMap.existentialsNeeded(Types.scala:4759)
	at scala.reflect.internal.Types$MethodType.resultType(Types.scala:2578)
	at scala.tools.nsc.typechecker.Infer$Inferencer.typesCompatible$1(Infer.scala:770)
	at scala.tools.nsc.typechecker.Infer$Inferencer.scala$tools$nsc$typechecker$Infer$Inferencer$$isApplicable(Infer.scala:791)
	at scala.tools.nsc.typechecker.Infer$Inferencer.isAsSpecific(Infer.scala:866)
	at scala.tools.nsc.typechecker.Infer$Inferencer.isStrictlyMoreSpecific(Infer.scala:932)
	at scala.tools.nsc.typechecker.Infer$Inferencer$$anonfun$inferExprAlternative$1.scala$tools$nsc$typechecker$Infer$Inferencer$$anonfun$$improves$1(Infer.scala:1490)
	at scala.tools.nsc.typechecker.Infer$Inferencer$$anonfun$inferExprAlternative$1$$anonfun$35.apply(Infer.scala:1495)
	at scala.tools.nsc.typechecker.Infer$Inferencer$$anonfun$inferExprAlternative$1$$anonfun$35.apply(Infer.scala:1495)
	at scala.collection.immutable.List.loop$3(List.scala:273)
	at scala.collection.immutable.List.dropWhile(List.scala:276)
	at scala.tools.nsc.typechecker.Infer$Inferencer$$anonfun$inferExprAlternative$1.apply(Infer.scala:1495)
	at scala.tools.nsc.typechecker.Infer$Inferencer$$anonfun$inferExprAlternative$1.apply(Infer.scala:1478)
	at scala.tools.nsc.typechecker.Infer$Inferencer$$anonfun$tryTwice$1.apply(Infer.scala:1646)
	at scala.tools.nsc.typechecker.Infer$Inferencer$$anonfun$tryTwice$1.apply(Infer.scala:1646)
	at scala.tools.nsc.typechecker.Contexts$Context.withImplicitsDisabled(Contexts.scala:211)
	at scala.tools.nsc.typechecker.Infer$Inferencer.tryTwice(Infer.scala:1646)
	at scala.tools.nsc.typechecker.Infer$Inferencer.inferExprAlternative(Infer.scala:1478)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1069)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
	at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1070)
(hundreds more)

Unfortunately the JVM cut off the bottom of the stack.
@scabug
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scabug commented Feb 1, 2013

Imported From: https://issues.scala-lang.org/browse/SI-7057?orig=1
Reporter: @dragos
Affected Versions: 2.10.0
Duplicates #6912

@scabug
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scabug commented Feb 1, 2013

@hubertp said:
I would say a duplicate of #6912.

@scabug
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scabug commented Feb 1, 2013

@retronym said:
#6912

@scabug scabug closed this as completed Feb 1, 2013
@scabug
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scabug commented Feb 4, 2013

@dragos said:
I knew I saw something similar, but i couldn't track down the ticket :(.

We can leave it closed, but I'm using 2.10.1 nightlies (I know, I set the wrong version in the report). I'll re-open if I see it again.

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scabug commented Feb 4, 2013

@retronym said:
The line number Typers.scala:1070 suggests it was 2.10.0 or something similar.

https://github.com/scala/scala/blob/v2.10.0/src/compiler/scala/tools/nsc/typechecker/Typers.scala#L1070

https://github.com/scala/scala/blob/2.10.x/src/compiler/scala/tools/nsc/typechecker/Typers.scala#L1070
https://github.com/scala/scala/blob/2.10.x@{1.month.ago}/src/compiler/scala/tools/nsc/typechecker/Typers.scala#L1070

@scabug scabug added this to the 2.10.1 milestone Apr 7, 2017
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