GNU bug report logs - #35277
26.1.90; Non-assigned variable used in condition

Previous Next

Full log

View this message in rfc822 format

From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Óscar Fuentes <ofv <at> wanadoo.es>
Subject: bug#35277: closed (26.1.90; Non-assigned variable used in condition)
Date: Tue, 16 Apr 2019 03:59:02 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#35277: 26.1.90; Non-assigned variable used in condition

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 35277 <at> debbugs.gnu.org.

-- 
35277: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=35277
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Óscar Fuentes <ofv <at> wanadoo.es>
Cc: 35277-done <at> debbugs.gnu.org
Subject: 26.1.90; Non-assigned variable used in condition
Date: Mon, 15 Apr 2019 20:58:04 -0700

[Message part 3 (text/plain, inline)]

Thanks for reporting that. I installed the attached patch into Emacs master.

[0001-Fix-uninit-var-in-widget.c.patch (text/x-patch, attachment)]

[Message part 5 (message/rfc822, inline)]

From: Óscar Fuentes <ofv <at> wanadoo.es>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.1.90; Non-assigned variable used in condition
Date: Sun, 14 Apr 2019 19:21:46 +0200

../../emacs/src/widget.c: In function ‘EmacsFrameQueryGeometry’:
../../emacs/src/widget.c:457:29: warning: ‘ok_height’ may be used uninitialized in this function [-Wmaybe-uninitialized]
       if ((mask & CWHeight) && (ok_height != request->height))
           ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../emacs/src/widget.c:455:18: warning: ‘ok_width’ may be used uninitialized in this function [-Wmaybe-uninitialized]
    result->width = ok_width;
    ~~~~~~~~~~~~~~^~~~~~~~~~

I checked that the warnings are legit. With

(setq frame-resize-pixelwise t)

ok_width is used in the `if'. Not ok_height, at least on my experiments,
but removing the warning would be nice.

Note that the warning for `ok_width' points to the assignment, but it is
used right before on the `if'.


In GNU Emacs 26.1.90 (build 2, x86_64-pc-linux-gnu, X toolkit)
 of 2019-03-16 built on sky
Repository revision: df7ed10e4f15d3ea8b4426f7721bafe60bf8deeb
Windowing system distributor 'The X.Org Foundation', version 11.0.12003000
System Description:	Debian GNU/Linux buster/sid

Recent messages:
Saving file /home/oscar/elisp/emacs.el...
Wrote /home/oscar/elisp/emacs.el
Auto-saving...done
Saving file /home/oscar/dev/emacs/emacs/src/widget.c...
Wrote /home/oscar/dev/emacs/emacs/src/widget.c
Saving file /home/oscar/dev/emacs/emacs/src/widget.c...
Wrote /home/oscar/dev/emacs/emacs/src/widget.c
[C-t] show common commands, [?] describe events, [C-h i] show manual
Saving file /home/oscar/elisp/emacs.el...
Wrote /home/oscar/elisp/emacs.el
Quit
Configured using:
 'configure --without-toolkit-scroll-bars --with-x-toolkit=lucid
 --with-modules'

Configured features:
XAW3D XPM JPEG TIFF GIF PNG RSVG SOUND GSETTINGS GLIB NOTIFY LIBSELINUX
GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB LUCID X11 XDBE XIM MODULES
THREADS

Important settings:
  value of $LANG: C
  locale-coding-system: nil

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.