Adding template base class inheritance inference

tests/t00032/t00032.cc

@@ -0,0 +1,37 @@
+#include <memory>
+#include <vector>
+
+namespace clanguml {
+namespace t00032 {
+
+struct Base {
+};
+
+struct TBase {
+};
+
+struct A {
+    void operator()() { }
+};
+
+struct B {
+    void operator()() { }
+};
+
+struct C {
+    void operator()() { }
+};
+
+template <typename T, typename... Ts>
+struct Overload : public Base, public T, public Ts... {
+    using Ts::operator()...;
+};
+
+template <class... Ts> Overload(Ts...) -> Overload<Ts...>;
+
+struct R {
+    Overload<TBase, A, B, C> overload;
+};
+
+} // namespace t00032
+} // namespace clanguml