scabug
commented
12 years ago Imported From: https://issues.scala-lang.org/browse/SI-6036?orig=1 Reporter: @clhodapp Affected Versions: 2.10.0-M4
Closed scabug closed 12 years ago
scabug
commented
12 years ago Imported From: https://issues.scala-lang.org/browse/SI-6036?orig=1 Reporter: @clhodapp Affected Versions: 2.10.0-M4
scabug
commented
12 years ago @xeno-by said:
class A { def foo(x: Int*) = 1 }
object Test extends App {
val cm = reflect.runtime.currentMirror
val u = cm.universe
val sig = u.typeOf[A] member u.newTermName("foo") typeSignature
val x = sig.asInstanceOf[u.MethodType].params.head
println(x.typeSignature)
}Works fine outside REPL. Please, clarify your first sentence in the bug report.
scabug
commented
12 years ago @clhodapp said (edited on Jul 6, 2012 6:17:42 PM UTC): This is weird. It works when I run it with partest, but not when I run it with "scala" directly... Can you verify that it works outside of partest? I will try to figure out what's going on on my end.
scabug
commented
12 years ago @clhodapp said: I just did a full build from the very latest in trunk and...
1:52%> ~/git/scala/build/pack/bin/scalac Test.scala
warning: there were 1 feature warnings; re-run with -feature for details
one warning found
1:53%> ~/git/scala/build/pack/bin/scala Test
scala.reflect.internal.Types$TypeError: bad reference while unpickling A: type
scabug
commented
12 years ago @xeno-by said: Ugh, strange. Seems like it's caused by different classloader environments. Anyways I've fixed this bug for good, and the pull request will soon follow.
scabug
commented
12 years ago @adriaanm said: https://github.com/scala/scala/pull/843
This also happens in compiled code.
scala> val cm = reflect.runtime.currentMirror; val u = cm.universe cm: reflect.runtime.universe.Mirror = JavaMirror with scala.tools.nsc.interpreter.IMain$TranslatingClassLoader@65f1a3a8 of type class scala.tools.nsc.interpreter.IMain$TranslatingClassLoader with classpath
u: reflect.runtime.universe.type = scala.reflect.runtime.JavaUniverse@5f4fcc96
scala> class A { def foo(x: Int*) = 1 } defined class A
scala> u.typeOf[A] member u.newTermName("foo") typeSignature warning: there were 1 feature warnings; re-run with -feature for details res0: u.Type = (x: <?>)scala.Int
scala> res0.asInstanceOf[u.MethodType].params.head res1: u.Symbol = value x
scala> res1.typeSignature typeSignature typeSignatureIn
scala> res1.typeSignature scala.reflect.internal.Types$TypeError: bad reference while unpickling $line4.$read: type not found in scala.type
at scala.reflect.internal.pickling.UnPickler$Scan.toTypeError(UnPickler.scala:836)
at scala.reflect.internal.pickling.UnPickler$Scan$LazyTypeRef.complete(UnPickler.scala:849)
at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1209)
at scala.reflect.internal.Symbols$SymbolContextApiImpl.typeSignature(Symbols.scala:75)
at scala.reflect.internal.Symbols$SymbolContextApiImpl.typeSignature(Symbols.scala:62)
at .(:13)
at .()
at .(:7)
at .()
at $print()
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:736)
at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:991)
at scala.tools.nsc.interpreter.IMain.loadAndRunReq$1(IMain.scala:579)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:610)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:574)
at scala.tools.nsc.interpreter.ILoop.reallyInterpret$1(ILoop.scala:742)
at scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:787)
at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:699)
at scala.tools.nsc.interpreter.ILoop.processLine$1(ILoop.scala:563)
at scala.tools.nsc.interpreter.ILoop.innerLoop$1(ILoop.scala:570)
at scala.tools.nsc.interpreter.ILoop.loop(ILoop.scala:573)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:864)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:819)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:819)
at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:819)
at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:79)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:92)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:101)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)