Defaulted initializer constructor

[Henrik Mannerström <henrik.mannerstrom@xxxxxxxxx>]

Hello!

If I write
class MT {
public:
int k[3];
};

then g++(4.6.3) accepts
MT a{{0,1,2}};

but if I add a constructor
MT() {
for (int i = 0;i!=3;i++)
k[i] = 0;
}

then MT a{{0,1,2}}; gives me
error: no matching function for call to ‘MT::MT(<brace-enclosed
initializer list>)’

Now, if I add
MT(std::initializer_list<int> list) = default;

I get
error: ‘MT::MT(std::initializer_list<int>)’ cannot be defaulted

What constructor was I (gcc) using earlier and how can I get i back?

BR,
Henrik Mannerstrom