Aladdin - Scala Bugtracking
[#871] project: compiler priority: low category: bug
submitter assigned to status date submitted
Sean Burak fixed 2006-12-22 14:57:19.0
subject explicit outer pattern matching crash.
code 
package test;
trait Test {
  trait Input extends Product;
  case class Input0(xxx : String, yyy : Int) extends Input;
  def foo(input : Input) = input match {
    case _ =>
    case Input0(xxx,yyy) =>
  }
}
what happened 
java.lang.AssertionError: assertion failed: transforming too much, null
	at scala.Predef$.assert(Predef.scala:81)
	at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transform(ExplicitOuter.scala:612)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$20.apply(Trees.scala:1083)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$20.apply(Trees.scala:1082)
	at scala.tools.nsc.ast.Trees$Transformer.atOwner(Trees.scala:1190)
	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.ast.Trees$Transformer.transform(Trees.scala:1081)
	at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:46)
	at scala.tools.nsc.transform.ExplicitOuter$OuterPathTransformer.transform(ExplicitOuter.scala:303)
	at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transform(ExplicitOuter.scala:569)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$30.apply(Trees.scala:1184)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$30.apply(Trees.scala:1182)
	at scala.List$.loop$0(List.scala:244)
	at scala.List$.mapConserve(List.scala:261)
	at scala.List$.loop$0(List.scala:248)
	at scala.List$.mapConserve(List.scala:261)
	at scala.tools.nsc.ast.Trees$Transformer.transformStats(Trees.scala:1182)
	at scala.tools.nsc.ast.Trees$Transformer.transform(Trees.scala:1102)
	at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.scala$tools$nsc$transform$TypingTransformers$\
TypingTransformer$$super$transform(TypingTransformers.scala:44)
	at scala.tools.nsc.transform.TypingTransformers$TypingTransformer$$anonfun$0.apply(TypingTransformers.scala:44)\

	at scala.tools.nsc.transform.TypingTransformers$TypingTransformer$$anonfun$0.apply(TypingTransformers.scala:44)\

	at scala.tools.nsc.ast.Trees$Transformer.atOwner(Trees.scala:1190)
	at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:33)
	at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:27)
	at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:44)
	at scala.tools.nsc.transform.ExplicitOuter$OuterPathTransformer.transform(ExplicitOuter.scala:303)
	at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transform(ExplicitOuter.scala:537)
	at scala.tools.nsc.ast.Trees$Transformer.transformTemplate(Trees.scala:1170)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$17.apply(Trees.scala:1070)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$17.apply(Trees.scala:1069)
	at scala.tools.nsc.ast.Trees$Transformer.atOwner(Trees.scala:1190)
	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.ast.Trees$Transformer.transform(Trees.scala:1068)
	at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:46)
	at scala.tools.nsc.transform.ExplicitOuter$OuterPathTransformer.transform(ExplicitOuter.scala:303)
	at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transform(ExplicitOuter.scala:651)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$30.apply(Trees.scala:1184)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$30.apply(Trees.scala:1182)
	at scala.List$.loop$0(List.scala:244)
	at scala.List$.mapConserve(List.scala:261)
	at scala.tools.nsc.ast.Trees$Transformer.transformStats(Trees.scala:1182)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$16.apply(Trees.scala:1065)
	at scala.tools.nsc.ast.Trees$Transformer$$anonfun$16.apply(Trees.scala:1065)
	at scala.tools.nsc.ast.Trees$Transformer.atOwner(Trees.scala:1190)
	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.ast.Trees$Transformer.transform(Trees.scala:1064)
	at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:46)
	at scala.tools.nsc.transform.ExplicitOuter$OuterPathTransformer.transform(ExplicitOuter.scala:303)
	at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transform(ExplicitOuter.scala:651)
	at scala.tools.nsc.ast.Trees$Transformer.transformUnit(Trees.scala:1185)
	at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.scala$tools$nsc$transform$ExplicitOuter$Exp\
licitOuterTransformer$$super$transformUnit(ExplicitOuter.scala:662)
	at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer$$anonfun$17.apply(ExplicitOuter.scala:662)
\

	at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer$$anonfun$17.apply(ExplicitOuter.scala:662)
\

	at scala.tools.nsc.symtab.SymbolTable.atPhase(SymbolTable.scala:82)
	at scala.tools.nsc.transform.ExplicitOuter$ExplicitOuterTransformer.transformUnit(ExplicitOuter.scala:662)
	at scala.tools.nsc.transform.Transform$Phase.apply(Transform.scala:30)
	at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:220)
	at scala.tools.nsc.Global$GlobalPhase$$anonfun$1.apply(Global.scala:209)
	at scala.tools.nsc.Global$GlobalPhase$$anonfun$1.apply(Global.scala:209)
	at scala.Iterator$class.foreach(Iterator.scala:341)
	at scala.collection.mutable.ListBuffer$$anon$0.foreach(ListBuffer.scala:244)
	at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:209)
	at scala.tools.nsc.Global$Run.compileSources(Global.scala:474)
	at scala.tools.nsc.Global$Run.compile(Global.scala:545)
	at ch.epfl.lamp.sdt.build.ScalaCompilerManager$ScalaCompiler.compile(ScalaCompilerManager.java:263)
	at ch.epfl.lamp.sdt.build.ScalaProjectBuilder.build(ScalaProjectBuilder.java:153)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:621)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:163)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:194)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:243)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:299)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:331)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:156)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:222)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
what expected
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Changes of this bug report
Burak  edited on  2007-01-19 16:18:38.0