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StackOverFlowError when modifying examples/sort2.scala #4961

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scabug opened this issue Sep 1, 2011 · 3 comments
Closed

StackOverFlowError when modifying examples/sort2.scala #4961

scabug opened this issue Sep 1, 2011 · 3 comments
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@scabug scabug commented Sep 1, 2011

When expanding the List to be sorted by examples/sort2.scala to some more values like val xs2 = List(6, 2, 8, 5, 112,-44,-22,109,56,-66,43,42,109,-111,2341) the program crashes with a StackOverFlowError.

As a scala beginner I have no idea if this error is due to the algorithm used in the example or if it reveals some bigger bug in Scala.

This is the stacktrace:
Exception in thread "main" java.lang.StackOverflowError
at scala.collection.mutable.ListBuffer.$plus$eq(ListBuffer.scala:115)
at scala.collection.mutable.ListBuffer.$plus$eq(ListBuffer.scala:42)
at scala.collection.TraversableLike$$anonfun$filter$1.apply(TraversableLike.scala:213)
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59)
at scala.collection.immutable.List.foreach(List.scala:45)
at scala.collection.TraversableLike$class.filter(TraversableLike.scala:212)
at scala.collection.immutable.List.filter(List.scala:45)
at examples.sort2$.sort(sort2.scala:14)

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@scabug scabug commented Sep 1, 2011

Imported From: https://issues.scala-lang.org/browse/SI-4961?orig=1
Reporter: Carlo Luib-Finettti (carlolf)
Affected Versions: 2.9.1

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@scabug scabug commented Oct 29, 2011

@paulp said:
Bug in the sort algorithm, will check in fix shortly.

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@scabug scabug commented Oct 29, 2011

Commit Message Bot (anonymous) said:
(extempore in r25909) Fix bug in example sort.

Embarrassing bug causes sort to explode if there are any
duplicated elements. Closes #4961, no review.

@scabug scabug closed this Oct 29, 2011
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