Undefined reference to vtable

Question

When building my C++ program, I\'m getting the error message

undefined reference to \'vtable...

What is the cause of this probl

Answer 1

If all else fails, look for duplication. I was misdirected by the explicit initial reference to constructors and destructors until I read a reference in another post. It's any unresolved method. In my case, I thought I had replaced the declaration that used char *xml as the parameter with one using the unnecessarily troublesome const char *xml, but instead, I had created a new one and left the other one in place.