Re: Question about GC in C code.

[Richard Stallman]

    The thing is I don't think I can guarantee that it will be rarely.
    Since Gtk is new and some issues not really solved (tooltips in
    menus, Gtk toolbar), I expect more Lisp_Objects may be needed in
    Gtk callback data.  I would prefer to be able to make local changes
    in a Gtk only file rather that propagate these changes into files
    that really have nothing to do with GUI toolkits.

You can add in GC a single call to a function in one of your files
and then add more code to that function as necessary.