Various of Ben's core code changes seem to have fixed the problem with
dumping range tables; I imagine it should be possible to uncomment the
assertion. Will build with something close to Vin's configuration and try.

I worked around this with my commit of
http://mid.gmane.org/18179.51680.103949.497008@parhasard.net . 

The interaction of the range table code with the dumping
infrastructure remains buggy, though. And it's a complex bug.

In this morning's 21.5 build, I'm getting the following error:

Updating autoloads for directory
/usr/local/src/xemacs-21.5-2007-10-02/modules/sample...
Updating autoloads for directory
/usr/local/src/xemacs-21.5-2007-10-02/modules/zlib...
Wrote /usr/local/src/xemacs-21.5-2007-10-02/modules/auto-autoloads.el
Wrote /usr/local/src/xemacs-21.5-2007-10-02/modules/auto-autoloads.el
Compiling /usr/local/src/xemacs-21.5-2007-10-02/modules/auto-autoloads.el...

Fatal error: assertion failed, file
/usr/local/src/xemacs-21.5-2007-10-02-mule/src/rangetab.c, line 563,
dy->cur >= 0 && dy->cur <= dy->largest && dy->largest <= dy->max
make[1]: *** [update-elc-2] Aborted (core dumped)
make[1]: Leaving directory `/usr/local/build/xemacs-21.5-2007-10-02-mule/src'
make: *** [src] Error 2

My Installation file is attached.

Thanks for looking into this.

  - Vin