The 'ibmcxx.cmp 220.127.116.11' appears to miscompile at least 2 different
XEmacs source files (fileio.c and at least one other) when using
'-O3 -qstrict'. 18.104.22.168 appears to be fine, as does compiling with -g.
The fileio.c botch is the cause of the crash I saw loading thai-xtix.el.
The other one causes a ugly crash while starting up.
Only recommendation I can make is to use 22.214.171.124.
I'll post a patch for PROBLEMS soon as I figure out what I think it should say ;)