1 files changed, 12 insertions, 0 deletions
diff --git a/tests/run/virtpatmat_partial_backquoted.scala b/tests/run/virtpatmat_partial_backquoted.scala
new file mode 100644
index 000000000..21f686dcf
--- /dev/null
+++ b/tests/run/virtpatmat_partial_backquoted.scala
@@ -0,0 +1,12 @@
+object Test extends dotty.runtime.LegacyApp {
+  class Region { override def toString = "You got me!" }
+  class SymbolType
+  case class SymbolInfo(tp: SymbolType, regions: List[Region], x: Any)
+
+  def findRegionsWithSymbolType(rawSymbolInfos: Seq[SymbolInfo], symbolType: SymbolType): Set[Region] =
+    rawSymbolInfos.collect { case SymbolInfo(`symbolType`, regions, _) => regions }.flatten.toSet
+
+  val stp = new SymbolType
+  val stp2 = new SymbolType
+  println(findRegionsWithSymbolType(List(SymbolInfo(stp2, List(), null), SymbolInfo(stp, List(new Region), null)), stp))
+}