Add test case for r115588.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115590 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/overload-call.cpp b/test/SemaCXX/overload-call.cpp
index d97bacc..81a88a3 100644
--- a/test/SemaCXX/overload-call.cpp
+++ b/test/SemaCXX/overload-call.cpp
@@ -490,3 +490,16 @@
     foo(a);
   }
 }
+
+// rdar://rdar8499524
+namespace rdar8499524 {
+  struct W {};
+  struct S {
+      S(...);
+  };
+
+  void g(const S&);
+  void f() {
+    g(W());
+  }
+}