I use this period of program

 # include & lt; Memory> 
#include  
#include  
using namespace std; 

Void fun2 (); 

The class Test 
{
Public: 
To Test () 
{
Fun2 (); 
} 
}; 
STD: : list LST. 

Void fun2 () 
{
Auto iter=LST. The begin (); 
While (iter!=LST. End ()) 
{
If (iter - & gt; Expired ()) 
Iter=LST. Erase (iter); 
The else 
+ + iter. 
} 
} 

Void fun () 
{
From & lt; Test> S (make_shared & lt; Test> ()); 
LST. Push_back (s); 
} 

Int main () 
{
fun(); 
} 

The program in the smart Pointers to destroy all testing weak_ptr content is deleted, if the content is deleted in the list delete weak_ptr
Now I want to ask next, do that expired in the destructor is legal, have defined the behavior (execution from the management of the object's destructor, weak_ptr expired for true)