valid code?

[Mike Stump]

So, was wondering, what do people think of:

class A {
   virtual int B() { return 0; }
};

class B: A {
   B() { }
};

valid code?  I didn't find any prohibitions against it (yet) in the 98  
language standard.  I'm kinda wishing there is and was hoping someone  
where could just cite it.  :-)  If not, I'll file a bug report for it.