bug#7854: 24.0.50; Buffer *temp* modified; kill anyway?

[Reiner Steib <reinersteib+gmane@imap.cc>]

Reiner Steib writes:

> The bug happens before I can select the directory, so the specific
> directory doesn't matter.
> 
> I neither can reproduce it on GNU/Linux, but on Windows, it is 100%
> reproducible.  Any ideas how I can obtain more useful information from
> the debug buffer?  Which *.el file should I load?
> 
> One more data point: The problem also happens e.g. when starting
> Gnus.  My guess is that it happen when Emacs reads a file (.cvsrc,
> ...) into a temp buffer.

After moving ~/.cvsrc away, the bug doesn't happen. 
With a 0 byte ~/.cvsrc, the bug doesn't happen. 

With this simple .cvsrc, the bug triggers again:

$ cat --show-all ~/.cvsrc
#

(i.e. only one character '#', no CR, no newline).

When I answer "no" at the prompt "Buffer  *temp* modified; kill anyway?",
visit the buffer " *temp*", (point-max) is 2, and the mode line shows
iso-latin-1-dos as the coding system.

M-x describe-coding-system shows RET:

| Coding system for saving this buffer:
|   Not set locally, use the default.
| Default coding system (for new files):
|   1 -- iso-latin-1-dos (alias: iso-8859-1-dos latin-1-dos)

Bye, Reiner.