Generics on selectDynamic appear to get lost in REPL #6320
Description
Note that the following works fine when compiled using scalac:
scala> class Dyn(m: Map[String, Any]) extends Dynamic { def selectDynamic[T](s: String): T = m(s).asInstanceOf[T] }
defined class Dyn
scala> new Dyn(Map("foo" -> 10)).foo[Int]
java.lang.ClassCastException: java.lang.Integer cannot be cast to scala.runtime.Nothing$
at .(:9)
at .()
at .(:7)
at .()
at $print()
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:732)
at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:981)
at scala.tools.nsc.interpreter.IMain.loadAndRunReq$1(IMain.scala:571)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:602)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:566)
at scala.tools.nsc.interpreter.ILoop.reallyInterpret$1(ILoop.scala:745)
at scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:790)
at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:702)
at scala.tools.nsc.interpreter.ILoop.processLine$1(ILoop.scala:566)
at scala.tools.nsc.interpreter.ILoop.innerLoop$1(ILoop.scala:573)
at scala.tools.nsc.interpreter.ILoop.loop(ILoop.scala:576)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:867)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:822)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:822)
at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:822)
at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:83)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:96)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:105)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)