Denote types with unused template params.

bindgen-tests/tests/parse_callbacks/item_discovery_callback/header_item_discovery.h

@@ -25,4 +25,8 @@ enum NamedEnum {
     Fish,
 };
 
-typedef enum NamedEnum AliasOfNamedEnum;
+typedef enum NamedEnum AliasOfNamedEnum;
+
+// Functions
+
+void named_function();

bindgen-tests/tests/parse_callbacks/item_discovery_callback/header_item_discovery.hpp

@@ -0,0 +1,16 @@
+// Methods
+
+class SomeClass {
+public:
+    SomeClass() = delete;
+    SomeClass(const SomeClass&) = default;
+    SomeClass(SomeClass&&);
+    void named_method();
+    virtual void virtual_method();
+    virtual void pure_virtual_method() = 0;
+private:
+    void private_method();
+protected:
+    void protected_method();
+
+};

bindgen-tests/tests/parse_callbacks/item_discovery_callback/header_item_discovery_with_namespaces.hpp

@@ -0,0 +1,30 @@
+void a();
+
+namespace B {
+    void c();
+
+    namespace D {
+        void e();
+    }
+
+    // We should not report empty namespaces
+    namespace F {
+    }
+
+    namespace {
+        void g();
+    }
+
+    inline namespace H {
+        void i();
+        namespace J {
+            void k();
+        }
+    }
+
+    struct L {
+        struct M {
+
+        };
+    };
+};