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    <p>I found a solution. Instead of trying to generate a member function to reflect a decorated method I figured out that I can generate a member funct<strong>or</strong> instead. The functor is realised as a template structure with a operator()(...). This allows me to have specialisations with correct number of arguments while retaining member function call semantics.</p> <p>Sample code :</p> <pre><code>template &lt;int Count&gt; struct apply_placeholders { }; template &lt;&gt; struct apply_placeholders&lt;1&gt; { template&lt;typename CallType, typename Self, template&lt;typename&gt;class CallPtrType&gt; static CallType apply(Self* self, CallPtrType&lt;Self&gt; callPtr) { return std::bind(std::mem_fn(callPtr), self, std::placeholders::_1); } }; template &lt;&gt; struct apply_placeholders&lt;2&gt; { template&lt;typename CallType, typename Self, template&lt;typename&gt;class CallPtrType&gt; static CallType apply(Self* self, CallPtrType&lt;Self&gt; callPtr) { return std::bind(std::mem_fn(callPtr), self, std::placeholders::_1, std::placeholders::_2); } }; template &lt;&gt; struct apply_placeholders&lt;3&gt; { template&lt;typename CallType, typename Self, template&lt;typename&gt;class CallPtrType&gt; static CallType apply(Self* self, CallPtrType&lt;Self&gt; callPtr) { return std::bind(std::mem_fn(callPtr), self, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3); } }; template &lt;&gt; struct apply_placeholders&lt;4&gt; { template&lt;typename CallType, typename Self, template&lt;typename&gt;class CallPtrType&gt; static CallType apply(Self* self, CallPtrType&lt;Self&gt; callPtr) { return std::bind(std::mem_fn(callPtr), self, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3, std::placeholders::_4); } }; template&lt;typename RetType, template&lt;typename...&gt;class FrozenArgTypes, typename... ArgTypes&gt; struct mimic_functor_impl { }; template&lt;typename RetType, typename... ArgTypes&gt; struct mimic_functor_impl&lt;RetType, type_placeholder, type_placeholder&lt;ArgTypes...&gt;&gt; { public: using CallType = std::function&lt;RetType(ArgTypes...)&gt;; template&lt;typename Self&gt; using CallPtrType = RetType(Self::*)(ArgTypes...); private: CallType mCall; public: mimic_functor_impl(CallType call) : mCall{call} { } RetType operator () (ArgTypes... args) { return mCall(args...); } template&lt;typename Self&gt; static CallType make_function(Self* self, CallPtrType&lt;Self&gt; callPtr) { // manually specialise the template method because the compiler get's lost on matching "Self::*" in CallPtrType return apply_placeholders&lt;sizeof...(ArgTypes)&gt;::template apply&lt;CallType, Self, CallPtrType&gt;(self, callPtr); } }; template&lt;typename... ArgTypes&gt; struct mimic_functor_impl&lt;void, type_placeholder, type_placeholder&lt;ArgTypes...&gt;&gt; { public: using CallType = std::function&lt;void(ArgTypes...)&gt;; template&lt;typename Self&gt; using CallPtrType = void(Self::*)(ArgTypes...); private: CallType mCall; public: mimic_functor_impl(CallType call) : mCall{call} { } void operator () (ArgTypes... args) { mCall(args...); } template&lt;typename Self&gt; static CallType make_function(Self* self, CallPtrType&lt;Self&gt; callPtr) { // manually specialise the template method because the compiler get's lost on matching "Self::*" in CallPtrType return apply_placeholders&lt;sizeof...(ArgTypes)&gt;::template apply&lt;CallType, Self, CallPtrType&gt;(self, callPtr); } }; template&lt;typename Reflect&gt; struct mimic_functor : mimic_functor_impl&lt;typename Reflect::method_type, type_placeholder, typename Reflect::method_args&gt; { private: using BaseType = mimic_functor_impl&lt;typename Reflect::method_type, type_placeholder, typename Reflect::method_args&gt;; public: mimic_functor(typename BaseType::CallType call) : BaseType(call) { } }; #define __TAG(x) x ## _tag #define RPCBIND(method_name) \ public: \ using __TAG(method_name) = reflect_method&lt;decltype(&amp;ParentType::method_name)&gt;; \ mimic_functor&lt;__TAG(method_name)&gt; method_name{mimic_functor&lt;__TAG(method_name)&gt;::make_function(dynamic_cast&lt;ParentType*&gt;( const_cast&lt;SelfType*&gt;( this ) ), &amp;ParentType::method_name)}; </code></pre> <p>The rest of the code is like in the question listing.</p> <p>The <code>apply_placeholders</code> template expands a required number of placeholders to match the count of parameters in a variadic parameter pack.</p> <p>The <code>mimic_functor_impl</code> and <code>mimic_functor</code> templates create the functor whose operator ()(...) will match the reflected methods signature. The functor, when invoked, also calls the reflected method.</p> <p>The <code>make_function</code> member template function creates a bound std::function containing the reflected method with "this" pointer.</p>
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