Avoid momoization of console files

Author: nicolasstucki

compiler/src/dotty/tools/repl/ParseResult.scala

@@ -108,8 +108,10 @@ object ParseResult {
 
   @sharable private[this] val CommandExtract = """(:[\S]+)\s*(.*)""".r
 
+  @sharable private[this] var i = 0
   private def parseStats(sourceCode: String)(implicit ctx: Context): List[untpd.Tree] = {
-    val source = new SourceFile("<console>", sourceCode)
+    val source = new SourceFile(s"<console$i>", sourceCode)
+    i += 1
     val ctx1 = ctx.fresh.setSource(source)
     val parser = new Parser(source)(ctx1)
     val stats = parser.blockStatSeq()