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commented
11 years ago Imported From: https://issues.scala-lang.org/browse/SI-6783?orig=1 Reporter: Ryan Bair (ryandbair) Affected Versions: 2.10.0-M5 Attachments:
- reflection-test.tar.bz2 (created on Dec 7, 2012 6:45:10 PM UTC, 18538 bytes)
Attempting to get a ClassSymbol from a Scala class with Java attribute with a defined Java Enum parameter causes an exception to be thrown at runtime. If you remove the parameter (let it default) the code runs without issue. A runnable example is attached.
@JavaAnnotation(JavaAnnotation.JavaEnum.BAR) case class AnnotatedScalaClass()
val symbol = currentMirror.classSymbol(classOf[AnnotatedScalaClass]) assert(symbol.isCaseClass == true)
java.lang.RuntimeException: error reading Scala signature of test.ReflectionTest: bad symbolic reference. A signature in test.ReflectionTest refers to term JavaEnum in object src.JavaAnnotation which is not available. It may be completely missing from the current classpath, or the version on the classpath might be incompatible with the version used when compiling test.ReflectionTest. at scala.reflect.internal.pickling.UnPickler.unpickle(UnPickler.scala:45) at scala.reflect.runtime.JavaMirrors$JavaMirror.unpickleClass(JavaMirrors.scala:561) at scala.reflect.runtime.SymbolLoaders$TopClassCompleter.complete(SymbolLoaders.scala:31) at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1217) at scala.reflect.runtime.JavaMirrors$JavaMirror.scala$reflect$runtime$JavaMirrors$JavaMirror$$coreLookup$1(JavaMirrors.scala:928) at scala.reflect.runtime.JavaMirrors$JavaMirror.scala$reflect$runtime$JavaMirrors$JavaMirror$$lookupClass$1(JavaMirrors.scala:934) at scala.reflect.runtime.JavaMirrors$JavaMirror.scala$reflect$runtime$JavaMirrors$JavaMirror$$classToScala1(JavaMirrors.scala:939) at scala.reflect.runtime.JavaMirrors$JavaMirror$$anonfun$classToScala$1.apply(JavaMirrors.scala:916) at scala.reflect.runtime.JavaMirrors$JavaMirror$$anonfun$classToScala$1.apply(JavaMirrors.scala:916) at scala.reflect.runtime.JavaMirrors$JavaMirror$$anonfun$toScala$1.apply(JavaMirrors.scala:104) at scala.reflect.runtime.TwoWayCache.toScala(TwoWayCache.scala:38) at scala.reflect.runtime.JavaMirrors$JavaMirror.toScala(JavaMirrors.scala:102) at scala.reflect.runtime.JavaMirrors$JavaMirror.classToScala(JavaMirrors.scala:916) at scala.reflect.runtime.JavaMirrors$JavaMirror.classSymbol(JavaMirrors.scala:206) at scala.reflect.runtime.JavaMirrors$JavaMirror.classSymbol(JavaMirrors.scala:65) at test.ReflectionTest$delayedInit$body.apply(ReflectionTest.scala:10) at scala.Function0$class.apply$mcV$sp(Function0.scala:40) at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12) at scala.App$$anonfun$main$1.apply(App.scala:71) at scala.App$$anonfun$main$1.apply(App.scala:71) at scala.collection.immutable.List.foreach(List.scala:309) at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:32) at scala.App$class.main(App.scala:71) at test.ReflectionTest$.main(ReflectionTest.scala:6) at test.ReflectionTest.main(ReflectionTest.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601)