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runtime reflection crashes when package object has eponymous method and module #9182

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scabug opened this issue Feb 25, 2015 · 4 comments
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runtime reflection crashes when package object has eponymous method and module #9182

scabug opened this issue Feb 25, 2015 · 4 comments
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@retronym
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reflection
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2.11.7

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@scabug
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scabug commented Feb 25, 2015 

// Main.scala
package object ops {
  object A
  def A(a: Any) = ()
}

object Test {
  def main(args: Array[String]): Unit = {
    val pack = scala.reflect.runtime.currentMirror.staticModule("ops.package")
    println(pack.info.decls.toList.map(_.toString).sorted.mkString("\n"))
  }
}

Triggers:

java.lang.AssertionError: assertion failed: pkgClass = package ops, sym = method A, existing = object A (depth=0)
	at scala.reflect.runtime.SymbolLoaders$PackageScope.enter(SymbolLoaders.scala:110)
	at scala.reflect.internal.SymbolTable$$anonfun$openPackageModule$2.apply(SymbolTable.scala:297)
	at scala.reflect.internal.SymbolTable$$anonfun$openPackageModule$2.apply(SymbolTable.scala:295)
	at scala.collection.Iterator$class.foreach(Iterator.scala:750)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1202)
	at scala.reflect.internal.SymbolTable.openPackageModule(SymbolTable.scala:295)
	at scala.reflect.internal.SymbolTable.openPackageModule(SymbolTable.scala:341)

Reported by [~lihaoyi] on https://groups.google.com/d/msg/scala-internals/fkqU-dD1be4/g68tbhh3dHQJ
@scabug
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scabug commented Feb 25, 2015

Imported From: https://issues.scala-lang.org/browse/SI-9182?orig=1
Reporter: @retronym
Affected Versions: 2.11.5
See #7940

@scabug
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scabug commented Feb 25, 2015

@retronym said:
scala/scala#4361

@scabug
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scabug commented Feb 25, 2015

@retronym said:
Workaround for [~lihaoyi]: rather than using an implicit class, define a class and implicit conversion manually (with a different name to the class).

@scabug
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scabug commented Feb 25, 2015

@retronym said:
#7940 involves a similar code pattern, but seems distinct.

@scabug scabug closed this as completed Mar 26, 2015
@scabug scabug added this to the 2.11.7 milestone Apr 7, 2017
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