The file is attached.
Put the point at the beginning of the second line on the bracket
and M-: (read (current-buffer))

Fabrice

2015-03-24 18:23 GMT+01:00 Eli Zaretskii <eliz@gnu.org>:

> > From: Fabrice Popineau <fabrice.popineau@gmail.com>
> > Date: Mon, 23 Mar 2015 21:55:31 +0100
> > Cc: Emacs developers <emacs-devel@gnu.org>
> >
> > I think I have found the real culprit behind this problem. The undo-tree
> > package
> > saves its history in a very direct form which looks like this:
> >
> > "5c22c12309909a63b7377b79cf2526b92d756854"
> > [cl-struct-undo-tree [nil ([nil (#8=[nil nil ((19641 . 19642) (#(" " 0 1
> > (syntax-type string fontified nil)) . -19641) (undo-tree-id0 . -1)
> (19541 .
> >
> > I spare the rest, because the crash is happening while reading the form
> > starting at [cl-struct-undo-tree ...
> > Actually, the point is near the end of my lines on #^^[1
> >
> > Emacs shouldn't crash while reading data it has been able to write
> (well, at
> > least I would expect it).
> > Could it be that the syntax-table structure has been changed recently in
> a way
> > that makes it impossible
> > to read one that has been printed with a previous version of emacs?
>
> I can't reproduce the crash, I get
>
>   (args-out-of-range 0 3)
>
> Can you post the full buffer, or at least a part that can be used as a
> reproducer?
>