[Gnus mailing-list readers: xemacs-21.5.2 (Artichoke) crashes when using the latest cvs Oort 0.04 gnus ont native win32.] Well it is not clear to me if the msvc optimizer is faulty: I got crashes with the debug version too. The elisp code that triggers the bug is there in nnmail.el : line 1641: (when (setq new (mail-source-fetch source (gnus-byte-compile `(lambda (file orig-file) (nnmail-split-incoming file ',(intern (format "%s-save-mail" method)) ',spool-func (if (equal file orig-file) nil (nnmail-get-split-group orig-file ',source)) ',(intern (format "%s-active-number" method))))))) Removing gnus-byte-compile avoids the crash. `gnus-byte-compile' is defined in gnus-util.el as: (defun gnus-byte-compile (form) "Byte-compile FORM if `gnus-use-byte-compile' is non-nil." (if gnus-use-byte-compile (progn (require 'bytecomp) (defalias 'gnus-byte-compile 'byte-compile) (byte-compile form)) form)) -- Fabrice Popineau