bug#23397: 25.0.92; assertion failure auto-reverting a file being overwritten

[Eli Zaretskii]

> From: Ken Raeburn <raeburn@permabit.com>
> Cc: 23397@debbugs.gnu.org
> Date: Mon, 02 May 2016 16:43:12 -0400
> 
> > If so, perhaps we should call 'fstat' again each time we want to use
> > st.st_size, and retry from the beginning if we find a mismatch?
> 
> If the file is large, and being frequently updated in small increments,
> that could delay us considerably, as we restart the process multiple
> times.

That is still better than aborting, right?