error typed tree leaves the typer phase unreported after failed implicit view application: NPE in MixinTransformer #8583
Description
Compiling the following code:
class Test { case class A( value: Double ) { def *( o: A ) = A( value * o.value ) } implicit def doubleToA( d: Double ) = A( d ) implicit def listToA( in: List[A] ): A = in.head val result: A = List( A( 1 ) ) map { 2.0 * _ } //this line causes the compiler to crash }Stacktrace:
error: java.lang.NullPointerException at scala.tools.nsc.transform.Mixin$MixinTransformer.scala$tools$nsc$transform$Mixin$MixinTransformer$$postTransform(Mixin.scala:1132) at scala.tools.nsc.transform.Mixin$MixinTransformer$$anonfun$transform$1.apply(Mixin.scala:1239) at scala.tools.nsc.transform.Mixin$MixinTransformer$$anonfun$transform$1.apply(Mixin.scala:1239) at scala.reflect.internal.SymbolTable.enteringPhase(SymbolTable.scala:242) at scala.reflect.internal.SymbolTable.exitingPhase(SymbolTable.scala:263) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:1239) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:468) at scala.reflect.internal.Trees$class.itransform(Trees.scala:1340) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:1236) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:468) at scala.reflect.internal.Trees$$anonfun$itransform$2.apply(Trees.scala:1356) at scala.reflect.internal.Trees$$anonfun$itransform$2.apply(Trees.scala:1354) at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:2600) at scala.reflect.internal.Trees$class.itransform(Trees.scala:1353) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:1236) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:468) at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2589) at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2587) at scala.collection.immutable.List.loop$1(List.scala:172) at scala.collection.immutable.List.mapConserve(List.scala:188) at scala.reflect.api.Trees$Transformer.transformStats(Trees.scala:2587) at scala.reflect.internal.Trees$class.itransform(Trees.scala:1397) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:1236) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:468) at scala.reflect.api.Trees$Transformer.transformTemplate(Trees.scala:2563) at scala.reflect.internal.Trees$$anonfun$itransform$4.apply(Trees.scala:1401) at scala.reflect.internal.Trees$$anonfun$itransform$4.apply(Trees.scala:1400) at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:2600) at scala.reflect.internal.Trees$class.itransform(Trees.scala:1399) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:1236) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:468) at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2589) at scala.reflect.api.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:2587) at scala.collection.immutable.List.loop$1(List.scala:172) at scala.collection.immutable.List.mapConserve(List.scala:188) at scala.reflect.api.Trees$Transformer.transformStats(Trees.scala:2587) at scala.reflect.internal.Trees$$anonfun$itransform$7.apply(Trees.scala:1419) at scala.reflect.internal.Trees$$anonfun$itransform$7.apply(Trees.scala:1419) at scala.reflect.api.Trees$Transformer.atOwner(Trees.scala:2600) at scala.reflect.internal.Trees$class.itransform(Trees.scala:1418) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.internal.SymbolTable.itransform(SymbolTable.scala:16) at scala.reflect.api.Trees$Transformer.transform(Trees.scala:2555) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:1236) at scala.tools.nsc.transform.Mixin$MixinTransformer.transform(Mixin.scala:468) at scala.tools.nsc.ast.Trees$Transformer.transformUnit(Trees.scala:147) at scala.tools.nsc.transform.Transform$Phase.apply(Transform.scala:30) at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:430) at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:397) at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:397) at scala.collection.Iterator$class.foreach(Iterator.scala:743) at scala.collection.AbstractIterator.foreach(Iterator.scala:1174) at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:397) at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1625) at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1610) at scala.tools.nsc.Global$Run.compileSources(Global.scala:1605) at scala.tools.nsc.Global$Run.compile(Global.scala:1703) at scala.tools.nsc.Driver.doCompile(Driver.scala:34) at scala.tools.nsc.MainClass.doCompile(Main.scala:23) at scala.tools.nsc.Driver.process(Driver.scala:55) at scala.tools.nsc.Driver.main(Driver.scala:68) at scala.tools.nsc.Main.main(Main.scala)