g++ 3.3 / 4.0 compatibility

[Christian Convey <conveycj@xxxxxxxxxxxxxxxxx>]

Hi guys,

I'm told that:
   code built with g++ 3.x will have a link-dependency on libstdc++.so.5
and
   code built with g++ 4.0 will have a link-dependency on libstdc++.so.6


In what ways can this come to bite me?  For instance, if a library was built 
with g++ 4.0, should I expect problems if I use that library in a program that 
was compiled with g++ 3.3?

Thanks,
Christian

--
Christian Convey
Computer Scientist,
Naval Undersea Warfare Center
Newport, RI