DDD: problem with variables not appearing to exist

[Nick Scott Blackwell]

To whomever might be able to help,

I'm having some problems with using ddd to debug a C++ program of mine.  In
one of the code modules, I can't seem to get ddd to display anything,
variables, data structures, or anything else.  I have no problems viewing
data in any other module of the program, but for this data, I get messages
like "no symbol 'variablename' in current context."  The data I'm trying to
look at is in a virtual member function, and the function is declared as
"protected" in the class definition.  Is there any reason you're aware of
that would cause ddd to do this?  I'd very much appreciate any input you're
able to provide.  Thanks!

Nick Blackwell