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compiler crash with protected class access #612

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scabug opened this issue Mar 7, 2008 · 5 comments
Closed

compiler crash with protected class access #612

scabug opened this issue Mar 7, 2008 · 5 comments
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@dragos
Milestone
2.8.0

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@scabug
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scabug commented Mar 7, 2008

Compiling following to files crash the compiler:

app.scala:

package test.app

import test.implicitObject

class implClass( s: String ) extends implicitObject( s )
{
  import test.implicitObject

  def getString = "world!"
  def t = implicitObject.implicitTest( getString )
}

object app extends Application
{
  val x = new implClass( "hello" )
  x.t
}

test.scala:

package test

object implicitObject {
  protected[test] def implicitTest(s: String)(implicit is: String) = Console.print( is + " " + s + "\n" )
}

abstract class implicitObject( s: String )
{
  implicit val implicitString = s

  def getString: String
}

Stacktrace:

~/tmp/tmp $$ scalac app.scala test.scala 
Exception in thread "main" java.util.NoSuchElementException: head of empty list
        at scala.Nil$$.head(List.scala:1244)
        at scala.Nil$$.head(List.scala:1241)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.accDefBuf(SuperAccessors.scala:44)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.makeAccessor(SuperAccessors.scala:283)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.transform(SuperAccessors.scala:189)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.transform(SuperAccessors.scala:207)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.transform(SuperAccessors.scala:207)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transform$$5.apply(Trees.scala:1290)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transform$$5.apply(Trees.scala:1289)
        at scala.tools.nsc.ast.Trees$$Transformer.atOwner(Trees.scala:1405)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:33)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:27)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.atOwner(SuperAccessors.scala:224)
        at scala.tools.nsc.ast.Trees$$Transformer.transform(Trees.scala:1288)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.transform(TypingTransformers.scala:46)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.transform(SuperAccessors.scala:213)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transformTrees$$1.apply(Trees.scala:1381)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transformTrees$$1.apply(Trees.scala:1381)
        at scala.List$$.loop$$1(List.scala:254)
        at scala.List$$.mapConserve(List.scala:271)
        at scala.tools.nsc.ast.Trees$$Transformer.transformTrees(Trees.scala:1381)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer$$$$anonfun$$3.apply(SuperAccessors.scala:112)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer$$$$anonfun$$3.apply(SuperAccessors.scala:112)
        at scala.tools.nsc.ast.Trees$$Transformer.atOwner(Trees.scala:1405)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:33)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:27)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.atOwner(SuperAccessors.scala:224)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.transform(SuperAccessors.scala:112)
        at scala.tools.nsc.ast.Trees$$Transformer.transformTemplate(Trees.scala:1383)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transform$$2.apply(Trees.scala:1277)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transform$$2.apply(Trees.scala:1277)
        at scala.tools.nsc.ast.Trees$$Transformer.atOwner(Trees.scala:1405)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:33)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:27)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.atOwner(SuperAccessors.scala:224)
        at scala.tools.nsc.ast.Trees$$Transformer.transform(Trees.scala:1276)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.transform(TypingTransformers.scala:46)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.transform(SuperAccessors.scala:99)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transformStats$$1.apply(Trees.scala:1399)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transformStats$$1.apply(Trees.scala:1397)
        at scala.List$$.loop$$1(List.scala:254)
        at scala.List$$.mapConserve(List.scala:271)
        at scala.tools.nsc.ast.Trees$$Transformer.transformStats(Trees.scala:1397)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transform$$1.apply(Trees.scala:1273)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transform$$1.apply(Trees.scala:1273)
        at scala.tools.nsc.ast.Trees$$Transformer.atOwner(Trees.scala:1405)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:33)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:27)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.atOwner(SuperAccessors.scala:224)
        at scala.tools.nsc.ast.Trees$$Transformer.transform(Trees.scala:1272)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.transform(TypingTransformers.scala:46)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.transform(SuperAccessors.scala:213)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transformStats$$1.apply(Trees.scala:1399)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transformStats$$1.apply(Trees.scala:1397)
        at scala.List$$.loop$$1(List.scala:254)
        at scala.List$$.mapConserve(List.scala:271)
        at scala.tools.nsc.ast.Trees$$Transformer.transformStats(Trees.scala:1397)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transform$$1.apply(Trees.scala:1273)
        at scala.tools.nsc.ast.Trees$$Transformer$$$$anonfun$$transform$$1.apply(Trees.scala:1273)
        at scala.tools.nsc.ast.Trees$$Transformer.atOwner(Trees.scala:1405)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:33)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.atOwner(TypingTransformers.scala:27)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.atOwner(SuperAccessors.scala:224)
        at scala.tools.nsc.ast.Trees$$Transformer.transform(Trees.scala:1272)
        at scala.tools.nsc.transform.TypingTransformers$$TypingTransformer.transform(TypingTransformers.scala:46)
        at scala.tools.nsc.typechecker.SuperAccessors$$SuperAccTransformer.transform(SuperAccessors.scala:213)
        at scala.tools.nsc.ast.Trees$$Transformer.transformUnit(Trees.scala:1400)
        at scala.tools.nsc.transform.Transform$$Phase.apply(Transform.scala:30)
        at scala.tools.nsc.Global$$GlobalPhase.applyPhase(Global.scala:247)
        at scala.tools.nsc.Global$$GlobalPhase$$$$anonfun$$run$$1.apply(Global.scala:233)
        at scala.tools.nsc.Global$$GlobalPhase$$$$anonfun$$run$$1.apply(Global.scala:233)
        at scala.Iterator$$class.foreach(Iterator.scala:387)
        at scala.collection.mutable.ListBuffer$$$$anon$$1.foreach(ListBuffer.scala:255)
        at scala.tools.nsc.Global$$GlobalPhase.run(Global.scala:233)
        at scala.tools.nsc.Global$$Run.compileSources(Global.scala:545)
        at scala.tools.nsc.Global$$Run.compile(Global.scala:629)
        at scala.tools.nsc.Main$$.process(Main.scala:86)
        at scala.tools.nsc.Main$$.main(Main.scala:107)
        at scala.tools.nsc.Main.main(Main.scala)
@scabug
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scabug commented Mar 7, 2008

Imported From: https://issues.scala-lang.org/browse/SI-612?orig=1
Reporter: Jan Kriesten (jkriesten)

@scabug
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scabug commented Mar 7, 2008

@ingoem said:
Reduced test in pending/pos

@scabug
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scabug commented May 21, 2008

@odersky said:
Looks like a protected accessor problem.

@scabug
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scabug commented Jan 14, 2009

@odersky said:
Milestone next_bugfix deleted

@scabug
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scabug commented Aug 12, 2009

@paulp said:
Fixed in trunk; test case moved from pending in r18470.

@scabug scabug closed this as completed May 18, 2011
@scabug scabug added this to the 2.8.0 milestone Apr 6, 2017
@scabug scabug mentioned this issue Apr 6, 2017
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