Re: static initialization order fiasco

"Alf P. Steinbach" <>
Wed, 30 Jul 2008 10:39:33 +0200
* anon:

When I was checking this:
(questions until 10.16)

This code:

#include <iostream>
#include <memory>

class a
        a() { std::cout<<"a()"<<std::endl; }

        ~a() { std::cout<<"~a()"<<std::endl; }
class b
        b() { std::cout<<"b()"<<std::endl; }

        ~b() { std::cout<<"~b()"<<std::endl; }
class c
        static a& k()
            static std::auto_ptr< a > p( new a );
            return *p;
        static b& j()
            static b* p( new b );
            return *p;
int main()

the output is:

So, the question is why the faq doesn't suggest this solution (with
auto_ptr) to the static initialization order fiasco?

The FAQ doesn't suggest using auto_ptr because for ordinary sized objects it
doesn't help with anything:

   static a& k() { static a theObject; return theObject; }

That's called a "Meyers singleton".

Use of auto_ptr is an orthogonal issue, addressing the problem of allocating
Very Large objects.

See also the following FAQ items.

Cheers & hth.,

- Alf

A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

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