Better error message for pattern arity errors.

Because friends don't tell friends:

  "wrong number of arguments for <none>"

3 files changed, 11 insertions, 1 deletions

diff --git a/test/files/neg/names-defaults-neg.check b/test/files/neg/names-defaults-neg.check
index 2809350855..f3c45a6aa0 100644
--- a/test/files/neg/names-defaults-neg.check
+++ b/test/files/neg/names-defaults-neg.check
@@ -76,7 +76,7 @@ and  method f in object t8 of type (a: Int, b: Object)String
 match argument types (a: Int,b: String) and expected result type Any
   println(t8.f(a = 0, b = "1")) // ambigous reference
              ^
-names-defaults-neg.scala:69: error: wrong number of arguments for <none>: (x: Int, y: String)A1
+names-defaults-neg.scala:69: error: wrong number of arguments for pattern A1(x: Int,y: String)
   A1() match { case A1(_) => () }
                       ^
 names-defaults-neg.scala:76: error: no type parameters for method test4: (x: T[T[List[T[X forSome { type X }]]]])T[T[List[T[X forSome { type X }]]]] exist so that it can be applied to arguments (List[Int])
diff --git a/test/files/neg/wrong-args-for-none.check b/test/files/neg/wrong-args-for-none.check
new file mode 100644
index 0000000000..d3b2d572ab
--- /dev/null
+++ b/test/files/neg/wrong-args-for-none.check
@@ -0,0 +1,4 @@
+wrong-args-for-none.scala:5: error: wrong number of arguments for pattern Test.Foo(x: Int,y: Int)
+  def f(x: Any) = x match { case Bar(Foo(5)) => }
+                                        ^
+one error found
diff --git a/test/files/neg/wrong-args-for-none.scala b/test/files/neg/wrong-args-for-none.scala
new file mode 100644
index 0000000000..1caa4782a3
--- /dev/null
+++ b/test/files/neg/wrong-args-for-none.scala
@@ -0,0 +1,6 @@
+object Test {
+  case class Foo(x: Int, y: Int)
+  case class Bar(x: AnyRef)
+
+  def f(x: Any) = x match { case Bar(Foo(5)) => }
+}