2 files changed, 51 insertions, 1 deletions
diff --git a/test/files/neg/warn-unused-privates.check b/test/files/neg/warn-unused-privates.check
index 6e1511d0e5..d273aa40f4 100644
--- a/test/files/neg/warn-unused-privates.check
+++ b/test/files/neg/warn-unused-privates.check
@@ -61,6 +61,24 @@ warn-unused-privates.scala:137: warning: private method x in class OtherNames is
 warn-unused-privates.scala:138: warning: private method y_= in class OtherNames is never used
   private def y_=(i: Int): Unit = ???
               ^
+warn-unused-privates.scala:153: warning: local val x in method f is never used
+    val C(x, y, Some(z)) = c              // warn
+          ^
+warn-unused-privates.scala:153: warning: local val y in method f is never used
+    val C(x, y, Some(z)) = c              // warn
+             ^
+warn-unused-privates.scala:153: warning: local val z in method f is never used
+    val C(x, y, Some(z)) = c              // warn
+                     ^
+warn-unused-privates.scala:161: warning: local val z in method h is never used
+    val C(x @ _, y @ _, z @ Some(_)) = c  // warn?
+                        ^
+warn-unused-privates.scala:166: warning: local val x in method v is never used
+    val D(x) = d                          // warn
+         ^
+warn-unused-privates.scala:170: warning: local val x in method w is never used
+    val D(x @ _) = d                      // fixme
+         ^
 warn-unused-privates.scala:97: warning: local var x in method f2 is never set - it could be a val
     var x = 100 // warn about it being a var
         ^
@@ -80,5 +98,5 @@ warn-unused-privates.scala:121: warning: local type OtherThing is never used
     type OtherThing = String // warn
          ^
 error: No warnings can be incurred under -Xfatal-warnings.
-27 warnings found
+33 warnings found
 one error found
diff --git a/test/files/neg/warn-unused-privates.scala b/test/files/neg/warn-unused-privates.scala
index 2f67882632..1b702c7555 100644
--- a/test/files/neg/warn-unused-privates.scala
+++ b/test/files/neg/warn-unused-privates.scala
@@ -140,3 +140,35 @@ class OtherNames {
 
   def f = y
 }
+
+case class C(a: Int, b: String, c: Option[String])
+case class D(a: Int)
+
+trait Boundings {
+
+  def c = C(42, "hello", Some("world"))
+  def d = D(42)
+
+  def f() = {
+    val C(x, y, Some(z)) = c              // warn
+    17
+  }
+  def g() = {
+    val C(x @ _, y @ _, Some(z @ _)) = c  // no warn
+    17
+  }
+  def h() = {
+    val C(x @ _, y @ _, z @ Some(_)) = c  // warn?
+    17
+  }
+
+  def v() = {
+    val D(x) = d                          // warn
+    17
+  }
+  def w() = {
+    val D(x @ _) = d                      // fixme
+    17
+  }
+
+}