bug#64821: closed (30.0.50; write-region errs when overwriting an already open file)

[GNU bug Tracking System]

Your message dated Tue, 25 Jul 2023 15:19:13 +0300
with message-id <831qgwqj3y.fsf@gnu.org>
and subject line Re: bug#64821: 30.0.50; write-region errs when overwriting an 
already open file
has caused the debbugs.gnu.org bug report #64821,
regarding 30.0.50; write-region errs when overwriting an already open file
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs@gnu.org.)


-- 
64821: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=64821
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems
> --- Begin Message ---
>
>
>
> Subject: 
>
> 30.0.50; write-region errs when overwriting an already open file
>
>
>
>
> Date: 
>
> Mon, 24 Jul 2023 07:12:00 +0000
>
>
>
>
> Consider the following reproducer:
>
> 1. emacs -Q
> 2. Evaluate the following in scratch buffer
>
> (with-temp-buffer
>   (insert "test")
>   (write-region nil nil "/tmp/1.txt"))
>
> 3. Open /tmp/1.txt
> 4. Evaluate the above sexp multiple times
> 5. Observe
>
> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>   expand-file-name(nil)
>   userlock--check-content-unchanged("/tmp/1.txt")
>   userlock--ask-user-about-supersession-threat("/tmp/1.txt")
>   write-region(nil nil "/tmp/1.txt")
>   (progn (insert "test") (write-region nil nil "/tmp/1.txt"))
>   (unwind-protect (progn (insert "test") (write-region nil nil "/tmp/1.txt")) 
> (and (buffer-name temp-buffer) (kill-buffer temp-buffer)))
>   (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (insert 
> "test") (write-region nil nil "/tmp/1.txt")) (and (buffer-name temp-buffer) 
> (kill-buffer temp-buffer))))
>   (let ((temp-buffer (generate-new-buffer " *temp*" t))) (save-current-buffer 
> (set-buffer temp-buffer) (unwind-protect (progn (insert "test") (write-region 
> nil nil "/tmp/1.txt")) (and (buffer-name temp-buffer) (kill-buffer 
> temp-buffer)))))
>   (progn (let ((temp-buffer (generate-new-buffer " *temp*" t))) 
> (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (insert 
> "test") (write-region nil nil "/tmp/1.txt")) (and (buffer-name temp-buffer) 
> (kill-buffer temp-buffer))))))
>   elisp--eval-last-sexp(nil)
>   eval-last-sexp(nil)
>   funcall-interactively(eval-last-sexp nil)
>   command-execute(eval-last-sexp)
>
> Expected: No error is thrown.
>
> In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
>  3.24.38, cairo version 1.17.8) of 2023-07-21 built on localhost
> Repository revision: 7f77120683d6f150e61e11b41d75ba16ee5210a4
> Repository branch: master
> Windowing system distributor 'The X.Org Foundation', version 11.0.12101008
> System Description: Gentoo Linux
>
>
> -- 
> Ihor Radchenko // yantar92,
> Org mode contributor,
> Learn more about Org mode at <https://orgmode.org/>.
> Support Org development at <https://liberapay.com/org-mode>,
> or support my work at <https://liberapay.com/yantar92>
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#64821: 30.0.50; write-region errs when overwriting an already open file
>
>
>
>
> Date: 
>
> Tue, 25 Jul 2023 15:19:13 +0300
>
>
>
>
> > From: Ihor Radchenko <yantar92@posteo.net>
> > Cc: 64821@debbugs.gnu.org
> > Date: Tue, 25 Jul 2023 08:16:23 +0000
> > 
> > Eli Zaretskii <eliz@gnu.org> writes:
> > 
> > >> Expected: No error is thrown.
> > >
> > > Thanks, should be fixed now on the master branch.
> > 
> > I confirm the fix. Thanks!
>
> Thanks for testing; closing the bug.
>
>
> --- End Message ---