[Bug c++/56889] =delete(ing) default copy and move operations for a polymorphic type gives compilation error messages

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56889



--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> 2013-04-11 
12:42:52 UTC ---

You keep quoting Stroustrup but your code is still broken.



Your clone() function copies the object. The object is not copyable.  What is

so difficult to understand?



Add a copy constructor to vector_stack or change the clone function.



This is not a GCC bug!