Additional info. Built xemacs from
<ftp.sunet.se/pub/Linux/distributions/mandrakelinux/official/10.0/SRPMS/xemacs-21.4.14-2mdk.src.rpm>.
The only difference with default build settings was cflags that were
set to facilitate debugging. Observed the same setting
`search_regs.end[1]' past bound of data of string being searched in as
described in message posted to <xemacs-beta(a)xemacs.org> on Fri, 03 Dec
2004 16:32:10 +0300 (<028241b06ada11-gin(a)mo.msk.ru>).