// Furthermore, since the instance() function contains the object, instead
// of the singleton_default class containing a static instance of the
// object, that object is guaranteed to be constructed (at the latest) in
// the first call to instance(). This permits calls to instance() from
// static code, even if that code is called before the file-scope objects
// in this file have been initialized.


Увы, но разрушение такого синглетона после всех глобальных объектов, которые им пользовались, не гарантируется.

static some_service& local = get_service();

static void f()
{
    local.make_something();
}

some_service& get_service()
{
    struct fake : some_service
    {
        fake() : m_f(&f) {}
        void (*m_f)();
    };
    static fake instance;
    return instance;
}

R>

> static some_service& local = get_service();
> 
> static void f()
> {
>    local.make_something();
> }
> 
> some_service& get_service()
> {
>    struct fake : some_service
>    {
>        fake() : m_f(&f) {}
>        void (*m_f)();
>    };
>    static fake instance;
>    return instance;
> }
>

> Так у него не будет шансов

> R>

>

namespace {
__declspec(dllexport) void f()
{
   local.make_something();
}
}