[Bug: 21.5-b28] Crash while isearch for `image'

[Stephen J. Turnbull]

It's me FKtPp ;) writes:

 > As the topic described, I open the file
 > /usr/share/doc/asciidoc/asciidoc.txt.gz

If it's not too large (<50kb) (and you can legally and ethically do
so) you should provide this file, too.  Even a single byte of
difference can change the crash.  Also, I suspect that you did a lot
more than just open it and do a reverse isearch for "ima" (that's what
your gdb trace says you're doing) from line 1.

 > and i searched for `image', and bomm~~~ 

 > gdb infomation see attachments.

[[ Please make sure you give the appropriate mime-type, if you give a
generic type like application/octet-stream some MUAs will refuse to
guess.  Alternatively, you don't need to bother gzipping anything
under 10K. ]]

This is a known bug; something in the motion cache is getting
confused, I think.  Unfortunately, as usual, I can't reproduce.  Can
you reproduce starting with "xemacs -vanilla", and give an exact
keystroke by keystroke recipe?