Is it possible to prevent omission of aggregate initialization members?

I have a struct with many members of the same type, like this

struct VariablePointers {   VariablePtr active;   VariablePtr wasactive;   VariablePtr filename;};

The problem is that if I forget to initialize one of the struct members (e.g. wasactive), like this:

VariablePointers{activePtr, filename}

The compiler will not complain about it, but I will have one object that is partially initialized. How can I prevent this kind of error? I could add a constructor, but it would duplicate the list of variable twice, so I have to type all of this thrice!

Please also add C++11 answers, if there's a solution for C++11 (currently I'm restricted to that version). More recent language standards are welcome too, though!