Date: Thu, 17 Feb 94 10:57:34 JST
From: Stephen Turnbull <turnbull AT shako DOT sk DOT tsukuba DOT ac DOT jp>
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Successful port of DLD?

Mike Castle suggests:

>> The port worked reasonably well; only one example (reload-test) did
>> not work.  In debugging the code for this example, I kept getting
>> unresolved references to ctor_list and dtor_list.  At the time I
>> was C++ illiterate, but I now suspect that these are
>> contructor/destructor lists.  I believe these are linked in from
>> crt0.o.  In this example, the entire current program is unlinked,
>> then a new, different program is linked in.  This different program
>> is not completely linked (that is, it hasn't been linked with
>> crt0.o) and so these last couple things are missing.  Hurm.. I just
>> now thought of it... these *might* be able to be resolved if libc.a
>> is dynamically linked in.... *shrug*

The ctor_list and dtor_list are in fact the lists of constructors
and destructors for global objects (in most implementations of C++
that I know the implementation of).  So that's right.  On the other
hand I doubt that they'd be in libc.a, because they are a C++
feature.  (But what do I know?)  Anyway, that's the place to start
looking.
    --Steve