Specialising a variadic template member function of a non-template class
c++, c++11, templates, variadic-templates
Solution
This looks like a bug. The problem is not limited to fully-specialized member function templates. It can be reproduced even with free-function templates as follows:
template<typename T, typename... Args>
void stuff2(Args... args);
template<typename T, typename... Args>
void stuff2(Args... args) {
cout << sizeof...(args) << endl;
}
template<>
void stuff2<int>() {
cout << "int" << endl;
}
int main() {}
While clang 3.2 compiles this just fine, gcc complains about:
spec.cpp:31:6: error: template-id 'stuff2' for 'void stuff2()' does not match any template declaration
There is a related SO question.
A message seems to confirm that this is indeed a bug.
Problem
I'm having a problem with this code: ``` #include <iostream> using namespace std; class A { public: template<typename T, typename... Args> void stuff(Args... args); }; template<typename T, typename... Args> void A::stuff(Args... args) { cout << sizeof...(args) << endl; } template<> void A::stuff<int>() { cout << "int" << endl; } int main() { A a; A b; a.stuff<char>(); b.stuff<int>(); } ``` Trying to compile it, I get this error: ``` template-id 'stuff<int>' for 'void A::stuff()' does not match any template declaration ``` What am I doing wrong? I tried it without the variadicness and it worked, but how do I specialise a variadic template member function?