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When Scala compiler evaluates XML element followed by "()" (without quotes), it crashes with NullPointerException.
It will be more helpful to generate a compilation error.
Welcome to Scala version 2.10.0 (OpenJDK64-BitServerVM, Java1.7.0_09-icedtea).
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scala> <e></e>()
<console>:8:error: overloaded method value apply withalternatives:
(f: scala.xml.Node=>Boolean)scala.xml.NodeSeq <and>
(i: Int)scala.xml.Node
cannot be applied to ()
<e></e>()
^
error:whilecompiling: <console>
during phase: typer
library version: version 2.10.0
compiler version: version 2.10.0
reconstructed args:
last tree to typer: Apply(constructor Elem)
symbol: constructor Elem in classElem (flags: <method>)
symbol definition: def<init>(prefix: String,label: String,attributes1: scala.xml.MetaData,scope: scala.xml.NamespaceBinding,minimizeEmpty: Boolean,child: scala.xml.Node*): scala.xml.Elemtpe: scala.xml.Elem
symbol owners: constructor Elem->classElem->packagexml
context owners: value res0 ->object$iw->object$iw->object$read->package$line3
...
TypeRef(TypeSymbol(classElemextendsNodewithSerializable))
uncaught exception during compilation: java.lang.NullPointerException
java.lang.NullPointerException
at scala.reflect.internal.TreeInfo.isExprSafeToInline(TreeInfo.scala:98)
at scala.reflect.internal.TreeInfo.isExprSafeToInline(TreeInfo.scala:102)
at scala.tools.nsc.typechecker.Typers$Typer.typedBlock(Typers.scala:2343)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5387)
at scala.tools.nsc.typechecker.Typers$Typer.typedApply$1(Typers.scala:4507)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5381)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5458)
at scala.tools.nsc.interpreter.ReplGlobal$$anon$1$$anon$2.typed(ReplGlobal.scala:29)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5526)
at scala.tools.nsc.typechecker.Typers$Typer.computeType(Typers.scala:5621)
at scala.tools.nsc.typechecker.Namers$Namer.assignTypeToTree(Namers.scala:813)
at scala.tools.nsc.typechecker.Namers$Namer.getSig$1(Namers.scala:1319)
at scala.tools.nsc.typechecker.Namers$Namer.typeSig(Namers.scala:1347)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply$mcV$sp(Namers.scala:709)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply(Namers.scala:708)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply(Namers.scala:708)
at scala.tools.nsc.typechecker.Namers$Namer.scala$tools$nsc$typechecker$Namers$Namer$$logAndValidate(Namers.scala:1385)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1.apply(Namers.scala:708)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1.apply(Namers.scala:707)
at scala.tools.nsc.typechecker.Namers$$anon$1.completeImpl(Namers.scala:1496)
at scala.tools.nsc.typechecker.Namers$LockingTypeCompleter$class.complete(Namers.scala:1504)
at scala.tools.nsc.typechecker.Namers$$anon$1.complete(Namers.scala:1494)
at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1217)
at scala.reflect.internal.Symbols$Symbol.initialize(Symbols.scala:1352)
at scala.tools.nsc.typechecker.MethodSynthesis$MethodSynth$class.addDerivedTrees(MethodSynthesis.scala:224)
at scala.tools.nsc.typechecker.Namers$Namer.addDerivedTrees(Namers.scala:55)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$29.apply(Typers.scala:1860)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$29.apply(Typers.scala:1860)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$rewrappingWrapperTrees$1.apply(Typers.scala:1798)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$rewrappingWrapperTrees$1.apply(Typers.scala:1795)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
at scala.collection.immutable.List.foreach(List.scala:309)
at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:251)
at scala.collection.AbstractTraversable.flatMap(Traversable.scala:105)
at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:1860)
at scala.tools.nsc.typechecker.Typers$Typer.typedModuleDef(Typers.scala:1769)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5401)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5458)
at scala.tools.nsc.interpreter.ReplGlobal$$anon$1$$anon$2.typed(ReplGlobal.scala:29)
at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedStat$1(Typers.scala:2770)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$55.apply(Typers.scala:2870)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$55.apply(Typers.scala:2870)
at scala.collection.immutable.List.loop$1(List.scala:164)
at scala.collection.immutable.List.mapConserve(List.scala:180)
at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:2870)
at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:1862)
at scala.tools.nsc.typechecker.Typers$Typer.typedModuleDef(Typers.scala:1769)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5401)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5458)
at scala.tools.nsc.interpreter.ReplGlobal$$anon$1$$anon$2.typed(ReplGlobal.scala:29)
at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedStat$1(Typers.scala:2770)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$55.apply(Typers.scala:2870)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$55.apply(Typers.scala:2870)
at scala.collection.immutable.List.loop$1(List.scala:164)
at scala.collection.immutable.List.mapConserve(List.scala:180)
at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:2870)
at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:1862)
at scala.tools.nsc.typechecker.Typers$Typer.typedModuleDef(Typers.scala:1769)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5401)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5458)
at scala.tools.nsc.interpreter.ReplGlobal$$anon$1$$anon$2.typed(ReplGlobal.scala:29)
at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedStat$1(Typers.scala:2770)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$55.apply(Typers.scala:2870)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$55.apply(Typers.scala:2870)
at scala.collection.immutable.List.loop$1(List.scala:164)
at scala.collection.immutable.List.mapConserve(List.scala:180)
at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:2870)
at scala.tools.nsc.typechecker.Typers$Typer.typedPackageDef$1(Typers.scala:5127)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5404)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5458)
at scala.tools.nsc.interpreter.ReplGlobal$$anon$1$$anon$2.typed(ReplGlobal.scala:29)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5509)
at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3.apply(Analyzer.scala:98)
at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:461)
at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3$$anonfun$run$1.apply(Analyzer.scala:90)
at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3$$anonfun$run$1.apply(Analyzer.scala:90)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1156)
at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3.run(Analyzer.scala:90)
at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1574)
at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1548)
at scala.tools.nsc.Global$Run.compileSources(Global.scala:1544)
at scala.tools.nsc.interpreter.IMain.compileSourcesKeepingRun(IMain.scala:425)
at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.compileAndSaveRun(IMain.scala:798)
at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.compile(IMain.scala:758)
at scala.tools.nsc.interpreter.IMain$Request.compile$lzycompute(IMain.scala:933)
at scala.tools.nsc.interpreter.IMain$Request.compile(IMain.scala:928)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:600)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:565)
at scala.tools.nsc.interpreter.ILoop.reallyInterpret$1(ILoop.scala:745)
at scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:790)
at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:702)
at scala.tools.nsc.interpreter.ILoop.processLine$1(ILoop.scala:566)
at scala.tools.nsc.interpreter.ILoop.innerLoop$1(ILoop.scala:573)
at scala.tools.nsc.interpreter.ILoop.loop(ILoop.scala:576)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:867)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:822)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:822)
at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:822)
at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:83)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:96)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:105)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
The text was updated successfully, but these errors were encountered:
When Scala compiler evaluates XML element followed by "()" (without quotes), it crashes with NullPointerException.
It will be more helpful to generate a compilation error.
The text was updated successfully, but these errors were encountered: