c++ allocator crashes the application when not enough memory

When allocator fails because of limited memory. The app is crashing. throwing bad_alloc or return nullptr doesn't stop crash. Anyone have any idea?

pointer allocator<T>(size_type count) const
{
    void* buffer = new (count * sizeof(T));
    if (!buffer)         // if buffer == nullptr crashes app
        throw bad_alloc; // doing this crashes app
}

So what to do to gracefully close the app and say not enough memory?