unwanted constructor calls before main()
===

I am working on some multi-thread code with *pthreads*. When I discovered some memory-leaks (via *valgrind*), I simply added some

    cout << " new [some name of class for me]" << endl;

in part of constructors, because I thought I have removed all of them. This revealed that part of them are launched before ***main().*** I have removed everything from main(), so it looks like:

    int main(){
    	return 0;
    }

Even without any ***#includes*** those constructors are still invoked. I think nothing from the previous code should be invoked in this case. I used *"project clean"* option in eclipse and try to delete binaries (*Debug/Release*). Nothing helps .. 

What is the purpose of that? What else I can do?
Thanks in advance. 
