From: Ken Brown <kbrown@cornell.edu>
To: 25854@debbugs.gnu.org
Subject: bug#25854: 26.0.50; tramp-test19-directory-files-and-attributes fails on 32-bit Cygwin
Date: Thu, 23 Feb 2017 18:19:50 -0500 [thread overview]
Message-ID: <c0086021-f9c3-2aaf-8c29-798bc32fac66@cornell.edu> (raw)
Starting with commit 3a6df2d,
tramp-test19-directory-files-and-attributes fails on 32-bit Cygwin. The
reason is that inode numbers tend to be very large, on the order of
10^17, at least on my systems. As a result, the "convert inode" code in
tramp-convert-file-attributes always falls back to tramp-get-inode.
Since this increments by 1 on every call, the file-attribute comparisons
in tramp-test19-directory-files-and-attributes always fail.
The significance of commit 3a6df2d is that it makes
tramp-get-remote-stat return a non-nil value, so that tramp uses 'stat'
for file attributes; this returns the true (large) inode number. Prior
to that commit, tramp-get-remote-stat would always return nil, so that
the tramp-perl-file-attributes script would be used for file
attributes. This script uses whatever inode number is returned by
Perl's version of 'stat', which is presumably some sort of 32-bit
truncation of the true inode number.
Although I'm seeing this on 32-bit Cygwin, it seems to me that it could
in principle happen on any 32-bit platform.
Ken
In GNU Emacs 26.0.50 (build 11, i686-pc-cygwin, GTK+ Version 3.18.9)
of 2017-02-23 built on desktop-new
Repository revision: 16efea3a883ebf633946ee9b9d0681eb55437878
Windowing system distributor 'The Cygwin/X Project', version 11.0.11901000
next reply other threads:[~2017-02-23 23:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-23 23:19 Ken Brown [this message]
2017-02-24 7:55 ` bug#25854: 26.0.50; tramp-test19-directory-files-and-attributes fails on 32-bit Cygwin Eli Zaretskii
2017-02-24 7:59 ` Eli Zaretskii
2017-02-24 14:04 ` Michael Albinus
2017-02-24 14:49 ` Ken Brown
2017-02-24 15:45 ` Ken Brown
2017-02-24 16:02 ` Michael Albinus
2017-02-25 14:05 ` Michael Albinus
2017-02-25 15:19 ` Ken Brown
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