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hang in inliner with recursive higher-order method, separate compilation #8062

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scabug opened this issue Dec 10, 2013 · 2 comments
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hang in inliner with recursive higher-order method, separate compilation #8062

scabug opened this issue Dec 10, 2013 · 2 comments
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@scabug
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@scabug scabug commented Dec 10, 2013

% tail src/main/scala/warmup/Warmup.scala src/test/scala/hang.scala
==> src/main/scala/warmup/Warmup.scala <==
package warmup

object Warmup {
  def filter[A](p: Any => Boolean): Any = filter[Any](p)
}

==> src/test/scala/hang.scala <==
object Test {
  warmup.Warmup.filter[Any](_ => true)
}

% scalac-hash v2.10.3 -optimize src/main/scala/warmup/Warmup.scala && scalac-hash v2.10.3 -optimize src/test/scala/hang.scala
// hang
^C

java.lang.Thread.State: RUNNABLE
	at scala.collection.mutable.FlatHashTable$HashUtils$class.elemHashCode(FlatHashTable.scala:391)
	at scala.collection.mutable.HashSet.elemHashCode(HashSet.scala:41)
	at scala.collection.mutable.FlatHashTable$class.findEntryImpl(FlatHashTable.scala:123)
	at scala.collection.mutable.FlatHashTable$class.containsEntry(FlatHashTable.scala:119)
	at scala.collection.mutable.HashSet.containsEntry(HashSet.scala:41)
	at scala.collection.mutable.HashSet.contains(HashSet.scala:58)
	at scala.collection.GenSetLike$class.apply(GenSetLike.scala:43)
	at scala.collection.mutable.AbstractSet.apply(Set.scala:45)
	at scala.collection.mutable.HashSet.apply(HashSet.scala:41)
	at scala.collection.LinearSeqOptimized$class.exists(LinearSeqOptimized.scala:80)
	at scala.collection.immutable.List.exists(List.scala:84)
	at scala.tools.nsc.backend.icode.analysis.TypeFlowAnalysis$MTFAGrowable.hasNoRelevantSuccs(TypeFlowAnalysis.scala:603)
	at scala.tools.nsc.backend.icode.analysis.TypeFlowAnalysis$MTFAGrowable$$anonfun$4.apply(TypeFlowAnalysis.scala:585)
	at scala.tools.nsc.backend.icode.analysis.TypeFlowAnalysis$MTFAGrowable$$anonfun$4.apply(TypeFlowAnalysis.scala:585)
	at scala.collection.TraversableLike$$anonfun$filter$1.apply(TraversableLike.scala:264)
	at scala.collection.mutable.HashSet.foreach(HashSet.scala:79)
	at scala.collection.TraversableLike$class.filter(TraversableLike.scala:263)
	at scala.collection.AbstractTraversable.filter(Traversable.scala:105)
	at scala.tools.nsc.backend.icode.analysis.TypeFlowAnalysis$MTFAGrowable.populatePerimeter(TypeFlowAnalysis.scala:583)
	at scala.tools.nsc.backend.icode.analysis.TypeFlowAnalysis$MTFAGrowable.reinit(TypeFlowAnalysis.scala:677)
	at scala.tools.nsc.backend.opt.Inliners$Inliner.analyzeMethod(Inliners.scala:500)
@scabug
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@scabug scabug commented Dec 10, 2013

Imported From: https://issues.scala-lang.org/browse/SI-8062?orig=1
Reporter: @retronym
Affected Versions: 2.10.3

@scabug
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@scabug scabug commented Dec 10, 2013

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