bug#17365: 24.3; Visiting tags table in combination with fill column indicator causes Emacs to hang

[Glenn Morris]

Jon Dufresne wrote:

> It is possible that this is a bug in fci-mode, however, it seems to me
> that a buggy third party script should not be capable of freezing the
> entire Emacs process, so I am filing it here.

As a general comment, an external package can break Emacs in an infinite
number of ways, including making it freeze. That's just how it is.
(I haven't checked your specific issue.)