1 files changed, 39 insertions, 0 deletions
diff --git a/test/SemaCXX/ms-iunknown-template-function.cpp b/test/SemaCXX/ms-iunknown-template-function.cpp
new file mode 100644
index 000000000000..8f741a18eaac
--- /dev/null
+++ b/test/SemaCXX/ms-iunknown-template-function.cpp
@@ -0,0 +1,39 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -fms-extensions %s
+// expected-no-diagnostics
+typedef long HRESULT;
+typedef unsigned long ULONG;
+typedef struct _GUID {
+  unsigned long Data1;
+  unsigned short Data2;
+  unsigned short Data3;
+  unsigned char Data4[8];
+} GUID;
+typedef GUID IID;
+
+// remove stdcall, since the warnings have nothing to do with
+// what is being tested.
+#define __stdcall
+
+extern "C" {
+extern "C++" {
+struct __declspec(uuid("00000000-0000-0000-C000-000000000046"))
+    IUnknown {
+public:
+  virtual HRESULT __stdcall QueryInterface(
+      const IID &riid,
+      void **ppvObject) = 0;
+
+  virtual ULONG __stdcall AddRef(void) = 0;
+
+  virtual ULONG __stdcall Release(void) = 0;
+
+  template <class Q>
+  HRESULT __stdcall QueryInterface(Q **pp) {
+    return QueryInterface(__uuidof(Q), (void **)pp);
+  }
+};
+}
+}
+
+__interface ISfFileIOPropertyPage : public IUnknown{};
+