diff --git a/include/llvm/Support/TrailingObjects.h b/include/llvm/Support/TrailingObjects.h
index 4d355724149..051c65ad0d9 100644
--- a/include/llvm/Support/TrailingObjects.h
+++ b/include/llvm/Support/TrailingObjects.h
@@ -231,7 +231,14 @@ class TrailingObjectsImpl<Align, BaseTy, TopTrailingObj, PrevTy>
 /// See the file comment for details on the usage of the
 /// TrailingObjects type.
 template <typename BaseTy, typename... TrailingTys>
+
+// Work around MSVC build error: cannot access inaccessible struct declared
+// in class'llvm::trailing_objects_internal::TrailingObjectsBase'
+#if defined(_MSC_VER)
+class TrailingObjects : protected trailing_objects_internal::TrailingObjectsImpl<
+#else
 class TrailingObjects : private trailing_objects_internal::TrailingObjectsImpl<
+#endif
                             trailing_objects_internal::AlignmentCalcHelper<
                                 TrailingTys...>::Alignment,
                             BaseTy, TrailingObjects<BaseTy, TrailingTys...>,