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Enumeration.values adds new element named "Value" #4292

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scabug opened this issue Feb 23, 2011 · 2 comments
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Enumeration.values adds new element named "Value" #4292

scabug opened this issue Feb 23, 2011 · 2 comments
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@scabug
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scabug commented Feb 23, 2011 

object SomeEnum extends Enumeration {
	type SomeEnum = Value;
	val ONE, TWO = Value;
}

object EnumTest {

	def main (args : Array[String]) {
		println(SomeEnum.values.size)
		println(SomeEnum.values);
		println(SomeEnum.values.size);
		println(SomeEnum.values);
	}
}

Should result in:

2
SomeEnum.ValueSet(ONE, TWO)
2
SomeEnum.ValueSet(ONE, TWO)

But results in adding "Value" as new element of !SomeEnum:

2
SomeEnum.ValueSet(ONE, TWO)
3
SomeEnum.ValueSet(ONE, TWO, Value)

It doesn't work with:

  • Scala: 2.8.1.final
  • Java: Java !HotSpot(TM) Client VM (build 1.5.0_17-b04, mixed mode, sharing)
  • Operating system: Windows XP
    It works as expected with Scala 2.8.0.final.
    Clearly there was some bug introduced to Enumeration implementation between those versions - maybe something related to Enumeration.values is confused by methods returning Val instances #3616.
@scabug
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scabug commented Feb 23, 2011

Imported From: https://issues.scala-lang.org/browse/SI-4292?orig=1
Reporter: jaroslaw.wosik
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@scabug
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scabug commented Feb 24, 2011

@soc said:
Works in 2.9 trunk, seems to be duplicate of #4045, #3687.

@scabug scabug closed this as completed May 18, 2011
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