PR13022: cope with parenthesized function types in MS name mangling.

llvm-svn: 157959
diff --git a/clang/test/CodeGenCXX/mangle-ms.cpp b/clang/test/CodeGenCXX/mangle-ms.cpp
index 6556ab7..ff75768 100644
--- a/clang/test/CodeGenCXX/mangle-ms.cpp
+++ b/clang/test/CodeGenCXX/mangle-ms.cpp
@@ -116,3 +116,8 @@
   delete [] array;
 // CHECK: @"\01??_V@YAXPAX@Z"
 }
+
+// PR13022
+void (redundant_parens)();
+void redundant_parens_use() { redundant_parens(); }
+// CHECK: @"\01?redundant_parens@@YAXXZ"