1 #include <list>

     2 #include <vector>

     3 #include <string>

     4 

     5 using namespace std;

     6 

     7 struct S :

     8     public string

     9 {

    10 };

    11 

    12 void test()

    13 {

    14   list<S> l;

    15   l.push_back( S() );

    16 

    17   vector<S> v;

    18   v.push_back( S() );

    19 }

    20