Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang-tools-extra/test/clang-tidy/Inputs/unused-using-decls.h

@@ -0,0 +1,11 @@
+class MyClass {
+public:
+  template <template <typename> class S, typename T>
+  S<T> *func1(T *a) {
+    return new S<T>();
+  }
+  template <typename T, T (*S)()>
+  void func2(T a) {
+    S();
+  }
+};