Scala example source code file (fail1.scala)

This example Scala source code file (fail1.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

debugparam, debugparam, t, t

The Scala fail1.scala source code

case class DebugParam[T](param: T)

// TypeStack init: REFERENCE(type AnyRef)
// [Now checking: typer]
// [check: typer] work/fail1.scala:1: trees differ
//  old: T [Trees$Ident] (tpe = T)
//  new: T [Trees$TypeTree] (tpe = T)
// [check: typer] work/fail1.scala:1: trees differ
//  old: DebugParam[T] [Trees$AppliedTypeTree] (tpe = null)
//  new: DebugParam[T] [Trees$TypeTree] (tpe = DebugParam[T])
// Exception in thread "main" java.lang.NullPointerException
//  at scala.tools.nsc.typechecker.Typers$Typer.typedTypeConstructor(Typers.scala:4337)
//  at scala.tools.nsc.typechecker.Typers$Typer.typedTypeConstructor(Typers.scala:4358)
//  at scala.tools.nsc.typechecker.Typers$Typer.typedNew$1(Typers.scala:3240)
//  at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:3994)
//  at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:4223)
//  at scala.tools.nsc.typechecker.TreeCheckers$TreeChecker.scala$tools$nsc$typechecker$TreeCheckers$TreeChecker$$super$typed(TreeCheckers.scala:101)