bug#19607: issue with Emacs 24.4.1 but not with 24.3.1 : changed on disk; really edit the buffer

[Bertrand Brelier]

Hello Paul,

I tested the new code :

plain CIFS :
Emacs should work around this POSIX-conformance bug.

on EncFS over CIFS :
Emacs does not work around this POSIX-conformance bug.

Thanks for your help,

Cheers,

Bertrand

                                                                                                                               

On Tue, Jan 27, 2015 at 5:29 PM, Paul Eggert <eggert@cs.ucla.edu> wrote:

I see from Jakob's email that the bug can be reproduced on CIFS without EncFS.  However, there's still something wrong here, as Emacs has code to work around the CIFS bug; see the comment about CIFS in emacs/src/fileio.c starting at line 4897, here:

http://git.savannah.gnu.org/cgit/emacs.git/tree/src/fileio.c?id=a56eab8259568ea1389e972623e46359e73c0233#n4897

Unfortunately, this workaround for the CIFS bug does not appear to suffice for EncFS over CIFS.

Bertrand, can you please try the attached program, both on plain CIFS and on EncFS over CIFS?  It attempts to mimic Emacs's actions more precisely than the previous test program, which may help us to narrow down the problem.  Thanks.