CODEWITHSUNDEEP
c++templatescompiler-errorsinitializer-list
gexicide
gexicide

Reputation: 40068

C++: Initializer list + template yields strange error

Consider the following code:

#include <initializer_list>

struct X{
    static void init(const std::initializer_list<void*>& ptrs){}
};

template <typename T>
struct Y{   

    static void foo(){
        X::init({ nullptr });
    }

};

The function foo of class template Y<T> calls X::init with an initializer list with a single nullptr. Should work fine, shouldn't it?

However, my g++ 4.6.1 complains:

test11.cpp: In static member function 'static void Y<T>::foo()':
test11.cpp:12:23: error: no matching function for call to 'X::init(<brace-enclosed initializer list>&)'
test11.cpp:12:23: note: candidate is:
test11.cpp:5:15: note: static void X::init(const std::initializer_list<void*>&)
test11.cpp:5:15: note:   no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const std::initializer_list<void*>&'

Once I remove the template parameter from Y, i.e. make it a normal class, everything works fine. What am I doing wrong or is this a compiler bug?

Upvotes: 2

Views: 290

Answers (1)

orlp
orlp

Reputation: 117701

This is almost definitely a compiler bug, seeing that it works in later versions of GCC (see comments). I personally don't see a reason why it shouldn't work.

Upvotes: 1

Related Questions