Merge pull request #11519 from dotty-staging/fix-#11161

Add regression test

Author: liufengyun

tests/run-macros/i11161.check

@@ -0,0 +1,2 @@
+Shape$Circle
+Shape$Circle

tests/run-macros/i11161/Macro_1.scala

@@ -0,0 +1,11 @@
+import scala.quoted._
+import scala.reflect.ClassTag
+
+inline def showType[T]: String = ${ showTypeImpl[T] }
+
+private def showTypeImpl[T: Type](using Quotes): Expr[String] =
+  Expr.summon[ClassTag[T]] match
+      case Some(ct) => '{ $ct.runtimeClass.getName }
+      case None =>
+        import quotes.reflect._
+        report.throwError(s"Unable to find a ClassTag for type ${Type.show[T]}", Position.ofMacroExpansion)

tests/run-macros/i11161/Test_2.scala

@@ -0,0 +1,8 @@
+enum Shape:
+  case Square(width: Int, height: Int) extends Shape
+  case Circle(radius: Int) extends Shape
+
+@main def Test: Unit =
+  println(showType[Shape.Circle])
+  println(classOf[Shape.Circle].getName)
+