bug#7952: 24.0.50; crash in find_interval

[Romain Francoise]

Eli Zaretskii <eliz@gnu.org> writes:

> Btw, does this problem happen only while grep-find runs, or also
> after it exits?

It also happens when the subprocess is dead. In fact, I just tried
saving the *grep* buffer to a file, opening it in a fresh Emacs and
it crashed when I did M-> M-v, the first time.