bug#21160: 24.5; message-goto-body crashes with moderately large headers

[Eli Zaretskii]

> From: Marcin Borkowski <mbork@mbork.pl>
> Date: Wed, 04 May 2016 09:32:27 +0200
> Cc: 21160@debbugs.gnu.org
> 
> On 2015-07-30, at 17:06, David Bremner <david@tethera.net> wrote:
> 
> > 1) start emacs -Q
> > 2) visit the attached file
> > 3) run M-: (search-forward-regexp "[^:]+:\\([^\n]\\|\n[ \t]\\)+\n\n" nil t)
> 
> Confirmed on GNU Emacs 25.1.50.9 (commit fafdfcb).

For bug reports about Emacs 25.0.9x or older, it's preferable to try
reproducing them in the emacs-25 branch, rather than on master,
because the urgent bugs now are on that branch.

> The error message is "Stack overflow in regexp matcher".

That's not a crash.

Thanks.