[21.5b18, SuSE] assertion failed, file regex.c, line 6359, abort()

Hi, Entering a group in Gnus containing the attached spam message causes XEmacs 21.5b18 to crash. This version is from the SuSE 9.3 rpm. Also the 21.5b22 rpm for SuSE 9.3¹ causes a similar crash. The installation info is attached. ¹ mentioned in http://article.gmane.org/gmane.emacs.xemacs.beta/20366 I'm gzipping the spam message, just in case the raw text would cause crashes even as an attachment. I'm also attaching a typescript showing the Lisp and C backtraces. Note that the Lisp backtrace contains binary garbage originating in the malformed headers of the spam, so I have similarly gzipped it. My locale settings are LANG=en_US.UTF-8 LC_PAPER=fi_FI -- Jouni K Seppänen