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DarkDimius opened this issue Sep 29, 2015 · 0 comments
Closed

Objects inherited from scala2 trait are initialized to null #810

DarkDimius opened this issue Sep 29, 2015 · 0 comments
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object A{
  def main(args: Array[String]): Unit = {
    lazy val s = args
    println(s)
  }
}
java.lang.NullPointerException
    at scala.tools.nsc.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genApply(BCodeBodyBuilder.scala:667)
    at scala.tools.nsc.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoad(BCodeBodyBuilder.scala:338)
    at scala.tools.nsc.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoad(BCodeBodyBuilder.scala:291)
    at scala.tools.nsc.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genStat(BCodeBodyBuilder.scala:90)
    at scala.tools.nsc.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder$$anonfun$genNormalBlock$1$1.apply(BCodeBodyBuilder.scala:859)
    at scala.tools.nsc.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder$$anonfun$genNormalBlock$1$1.apply(BCodeBodyBuilder.scala:859)
    at scala.collection.immutable.List.foreach(List.scala:381)
    at scala.tools.nsc.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genNormalBlock$1(BCodeBodyBuilder.scala:859)
    at scala.tools.nsc.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genBlock(BCodeBodyBuilder.scala:891)
    at scala.tools.nsc.backend.jvm.BCodeBodyBuilder$PlainBodyBuilder.genLoad(BCodeBodyBuilder.scala:409)
    at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.emitNormalMethodBody$1(BCodeSkelBuilder.scala:607)
    at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.genDefDef(BCodeSkelBuilder.scala:641)
    at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen(BCodeSkelBuilder.scala:510)
    at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder$$anonfun$gen$1.apply(BCodeSkelBuilder.scala:512)
    at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder$$anonfun$gen$1.apply(BCodeSkelBuilder.scala:512)
    at scala.collection.immutable.List.foreach(List.scala:381)
    at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen(BCodeSkelBuilder.scala:512)
    at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.genPlainClass(BCodeSkelBuilder.scala:119)
    at dotty.tools.backend.jvm.GenBCodePipeline$Worker1.visit(GenBCode.scala:174)
    at dotty.tools.backend.jvm.GenBCodePipeline$Worker1.run(GenBCode.scala:127)
    at dotty.tools.backend.jvm.GenBCodePipeline.buildAndSendToDisk(GenBCode.scala:328)
    at dotty.tools.backend.jvm.GenBCodePipeline.run(GenBCode.scala:297)
    at dotty.tools.backend.jvm.GenBCode.run(GenBCode.scala:41)
    at dotty.tools.dotc.core.Phases$Phase.$anonfun$runOn$2(Phases.scala:271)
    at dotty.tools.dotc.core.Phases$Phase$$Lambda$455/773989906.apply(Unknown Source)
    at scala.collection.immutable.List.map(List.scala:273)
    at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:273)
    at dotty.tools.backend.jvm.GenBCode.runOn(GenBCode.scala:34)
    at dotty.tools.dotc.Run.$anonfun$$anonfun$compileUnits$1$1(Run.scala:59)
    at dotty.tools.dotc.Run$$Lambda$194/957465255.applyVoid(Unknown Source)
    at scala.compat.java8.JProcedure1.apply(JProcedure1.java:18)
    at scala.compat.java8.JProcedure1.apply(JProcedure1.java:10)
    at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
    at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)
    at dotty.tools.dotc.Run.$anonfun$compileUnits$1(Run.scala:57)
    at dotty.tools.dotc.Run$$Lambda$185/288994035.apply$mcV$sp(Unknown Source)
    at scala.compat.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)
    at dotty.tools.dotc.util.Stats$.monitorHeartBeat(Stats.scala:58)
    at dotty.tools.dotc.Run.compileUnits(Run.scala:65)
    at dotty.tools.dotc.Run.compileSources(Run.scala:49)
    at dotty.tools.dotc.Run.compile(Run.scala:33)
    at dotty.tools.dotc.Driver.doCompile(Driver.scala:21)
    at dotty.tools.dotc.Driver.process(Driver.scala:44)
    at dotty.tools.dotc.Driver.main(Driver.scala:48)
    at dotty.tools.dotc.Main.main(Main.scala)
error: Error while emitting A.scala
@DarkDimius DarkDimius changed the title NPE in backend when compiling lazy vals. Objects inherited from scala2 trait are initialized to null Sep 29, 2015
@DarkDimius DarkDimius self-assigned this Sep 29, 2015
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