From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)

Description of problem:
When class X has a (member) subclass that created a typedef, and this typedef 
has the same name as a class inside the base class of class X,
g++3 and g++ crash with an internal error

Version-Release number of selected component (if applicable):
arnold@bunny:~/develop $ rpm -q gcc-c++
gcc-c++-2.96-98
arnold@bunny:~/develop $ rpm -q gcc3-c++
gcc3-c++-3.0.1-3

How reproducible:
Always

Code to Reproduce:
struct Base
{
        class AutoReadLock { };
};
struct Standalone
{
        class AutoLock { };
        typedef AutoLock AutoReadLock;
};
struct Derived : Base
{
        struct LocalMember : public Standalone { };
        class AutoReadLock { };
};

Actual Results:  arnold@bunny:~/develop $ g++3 test.C
test.C:14: Internal compiler error in pop_binding, at cp/decl.c:1193


Expected Results:  An error at link time (because of the lack of main()), but no
compile time crash

Additional info:

Renaming the typedefs fixes the problem