Merge pull request #5849 from dotty-staging/fix-#4453

Fix #4453: Avoid adding type bindings in getVariables

Author: abgruszecki

compiler/src/dotty/tools/dotc/ast/Desugar.scala

@@ -1472,7 +1472,7 @@ object desugar {
     val buf = new ListBuffer[VarInfo]
     def seenName(name: Name) = buf exists (_._1.name == name)
     def add(named: NameTree, t: Tree): Unit =
-      if (!seenName(named.name)) buf += ((named, t))
+      if (!seenName(named.name) && named.name.isTermName) buf += ((named, t))
     def collect(tree: Tree): Unit = tree match {
       case Bind(nme.WILDCARD, tree1) =>
         collect(tree1)

tests/neg/i4453.scala

@@ -0,0 +1,2 @@
+class x0 { var x0 == _ * // error: _* can be used only for last argument // error: == cannot be used as an extractor in a pattern because it lacks an unapply or unapplySeq method
+// error '=' expected, but eof found