What is the lifetime of class static variables in C++?

Question

If I have a class called Test ::

class Test
{
    static std::vector staticVector;
};

when does staticVector ge

Answer 1

Simply speaking:
A static member variable is constructed when the global variables are constructed. The construction order of global variables is not defined, but it happens before the main-function is entered.

Destruction happens when global variables are destroyed.

Global variables are destroyed in the reversed order they were constructed; after exiting the main-function.

Regards,
Ovanes

P.S.: I suggest to take a look at C++-Standard, which explains (defines) how and when global or static member variables are constructed or destructed.

P.P.S.: Your code only declares a static member variable, but does not initialize it. To initialize it you must write in one of the compilation units:

std::vector Test::staticVector;
or
std::vector Test::staticVector=std::vector(/* ctor params here */);