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varargs annoatation crashes With an NullPointerException #10101

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scabug opened this issue Dec 8, 2016 · 2 comments
Closed

varargs annoatation crashes With an NullPointerException #10101

scabug opened this issue Dec 8, 2016 · 2 comments
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@lrytz
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backend duplicate
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2.12.1

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@scabug
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scabug commented Dec 8, 2016

Example:

$ cat VarArgs.scala
import scala.annotation.varargs

trait VarArgs {
  @varargs def foo(n: Int, s: String*)
}

Attempting to compile this results in a NPE:

$ scalac VarArgs.scala                                                            [4/9076]
java.lang.NullPointerException
        at scala.tools.asm.tree.MethodNode.visitLocalVariable(MethodNode.java:572)
        at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.emitLocalVarScope(BCodeSkelBuilder.scala:719)
        at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.$anonfun$genDefDef$8(BCodeSkelBuilder.scala:629)
        at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.emitNormalMethodBody$1(BCodeSkelBuilder.scal$:629)
        at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.genDefDef(BCodeSkelBuilder.scala:636)
        at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen(BCodeSkelBuilder.scala:507)
        at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.$anonfun$gen$7(BCodeSkelBuilder.scala:512)
        at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.gen(BCodeSkelBuilder.scala:512)
        at scala.tools.nsc.backend.jvm.BCodeSkelBuilder$PlainSkelBuilder.genPlainClass(BCodeSkelBuilder.scala:113)
        at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase$Worker1.visit(GenBCode.scala:190)
        at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase$Worker1.$anonfun$run$1(GenBCode.scala:139)
        at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase$Worker1.run(GenBCode.scala:139)
        at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase.buildAndSendToDisk(GenBCode.scala:381)
        at scala.tools.nsc.backend.jvm.GenBCode$BCodePhase.run(GenBCode.scala:350)
        at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1404)
        at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1389)
        at scala.tools.nsc.Global$Run.compileSources(Global.scala:1384)
        at scala.tools.nsc.Global$Run.compile(Global.scala:1478)
        at scala.tools.nsc.MainClass.doCompile(Main.scala:24)
        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)
error: Error while emitting VarArgs.scala
null
one error found
$
@scabug
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scabug commented Dec 8, 2016

Imported From: https://issues.scala-lang.org/browse/SI-10101?orig=1
Reporter: Zack Powers (Milyardo)
Affected Versions: 2.12.0
See #10059

@scabug
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scabug commented Dec 9, 2016

@lrytz said:
This is fixed in 2.12.1, lucky us! Duplicate of #10059.

@scabug scabug closed this as completed Dec 9, 2016
@scabug scabug added this to the 2.12.1 milestone Apr 7, 2017
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