SI-6323 outlaws free types from TypeTag

Free types are no longer acceptable in normal type tags.
Like type parameters or abstract type members they don't map on any real type,
therefore I think this is a justified change.

The main reason for doing is this is to prohibit people from using `typeOf`
on local classes. Sure, the guard introduced in the previous commit will raise
runtime errors about that, but this commit provides static checking.

Those especially persistent might use `absTypeOf` and then try to play around
with the weak type it returns, but that's advanced usage scenario, and I don't
worry much about it.

Bottom line: `typeOf` should just work.
Things that work with additional effort should be explicitly marked as such.

2 files changed, 2 insertions, 2 deletions

diff --git a/test/files/run/t6323.check b/test/files/run/t6323b.check
index 2219278a16..2219278a16 100644
--- a/test/files/run/t6323.check
+++ b/test/files/run/t6323b.check
diff --git a/test/files/run/t6323.scala b/test/files/run/t6323b.scala
index 625cfaae20..25a2329d94 100644
--- a/test/files/run/t6323.scala
+++ b/test/files/run/t6323b.scala
@@ -8,14 +8,14 @@ object Test extends App {
       case class Test(a:String,b:List[Int])
 
       val lookAtMe = m.reflect(Test("a",List(5)))
-      val value = u.typeOf[Test]
+      val value = u.absTypeOf[Test]
       val members = value.members
       val member = value.members.filter(_.name.encoded == "a")
       val aAccessor = lookAtMe.reflectMethod(member.head.asMethod)
       val thisShouldBeA = aAccessor.apply()
       println(thisShouldBeA)
     } catch {
-      case ScalaReflectionException(msg) =>  println(msg)
+      case ScalaReflectionException(msg) => println(msg)
     }
   }
 }
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