1 files changed, 23 insertions, 0 deletions
diff --git a/tests/untried/neg/t7897.scala b/tests/untried/neg/t7897.scala
new file mode 100644
index 000000000..87c966b1e
--- /dev/null
+++ b/tests/untried/neg/t7897.scala
@@ -0,0 +1,23 @@
+package p0 {
+  class Single(val x: Any) extends AnyRef with Product1[String] {
+    private def s = "" + x
+    override def canEqual(x: Any) = this eq x.asInstanceOf[AnyRef]
+    def isEmpty = false
+    def get = this
+    def _1 = s + " only"
+
+    override def toString = s"Single(${_1})"
+  }
+
+  object Single {
+    def unapply(x: Any): Single = new Single(x)
+  }
+}
+object Test {
+  def main(args: Array[String]): Unit = {
+    "catdog" match {
+      case p0.Single(x) => println(s"`$x` has ${x.length} chars")
+      case x            => println("fail: " + x)
+    }
+  }
+}