*  lvalue lifetime bug: There isn't an easy fix for it and it leads to delayed
   and unpredictable crashes. It's simplest form is something like a[0]=(a=0).
   There the reference to a[0] is pushed on the stack, a gets freed and then
   the area formerly occupied by a gets assigned something. This leads to
   especially nasty effects if you do something more on the right hand side,
   i.e. a function call which deallocates a and then loads an object into the
   free space - has rather devastating effects, I assure you. Fixing that means
   major changes in the gamedriver.

*  save_object() within objects containing circular arrays. Example:
   mixed *a; create() { a = allocate(1); a[0]=a; save_object(SOME_FILE); }
   Easy fix: disallow saving of objects with arrays more than a given depth.
   Difficult fix (employed by Amylaar): save the circular structure in a special
   format and make it recoverable by restore_object().

*  telnet_neg() in comm.c seems not to handle some clients correctly.
   In particular, carriage returns and line feeds aren't deal with as
   expected.  This may be a problem with the clients.  Not sure.