GNU bug report logs - #33990
27.0.50; image-transform-fit-to-height/-width violates assert

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#33990: closed (27.0.50; image-transform-fit-to-height/-width
 violates assert)
Date: Fri, 25 Jan 2019 08:35:01 +0000

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

Your message dated Fri, 25 Jan 2019 10:33:59 +0200
with message-id <834l9x6sqw.fsf <at> gnu.org>
and subject line Re: bug#33990: 27.0.50; image-transform-fit-to-height/-width violates assert
has caused the debbugs.gnu.org bug report #33990,
regarding 27.0.50; image-transform-fit-to-height/-width violates assert
to be marked as done.

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


-- 
33990: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=33990
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Contact help-debbugs <at> gnu.org with problems

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

From: Benjamin Riefenstahl <b.riefenstahl <at> turtle-trading.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50; image-transform-fit-to-height/-width violates assert
Date: Sat, 05 Jan 2019 18:26:06 +0100

When I resize images, using image-transform-fit-to-height or
image-transform-fit-to-width, the scaling is performed but than
image-transform-check-size is called and signals an error.  This uses
ImageMagick 6.9.7.4 as installed by Debian GNUS/Linux 9.6 (stretch).

Also, because the scale factor is kept globally after that operation (is
that intentional BTW?), loading other images afterwards also runs into
that error, thus image-mode fails to execute and instead in new image
buffers the raw bytes are shown.

I can reproduce this on emacs-26 as well as master with "emacs -Q" with
PBM and with JPEG images.


In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
 of 2019-01-03 built on arrian
Repository revision: f7ccac9f9d82019d4d5ba3182200422fbc9c7e67
Repository branch: harfbuzz
Windowing system distributor 'The X.Org Foundation', version 11.0.11902000
System Description: Debian GNU/Linux 9 (stretch)

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS GLIB
NOTIFY INOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ LIBOTF
XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM THREADS LCMS2 GMP

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Emacs-Lisp

Minor modes in effect:
  global-magit-file-mode: t
  magit-file-mode: t
  global-git-commit-mode: t
  async-bytecomp-package-mode: t
  shell-dirtrack-mode: t
  desktop-save-mode: t
  display-time-mode: t
  diff-auto-refine-mode: t
  delete-selection-mode: t
  cua-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Features:
(shadow sort mail-extr emacsbug sendmail pcmpl-unix dirtrack dired-aux
whitespace compile ert pp ewoc man noutline outline tramp-archive
tramp-gvfs zeroconf dbus xml tramp trampver tramp-compat tramp-loaddefs
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backtrace tabify misearch multi-isearch rect cl-print thingatpt
eieio-opt speedbar sb-image ezimage dframe find-func help-fns
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magit-tag magit-merge magit-branch magit-reset magit-collab ghub-graphql
treepy graphql ghub url-http url-gw nsm url-auth url url-proxy
url-privacy url-expand url-methods url-history url-cookie url-domsuf
url-util mailcap magit-files magit-refs magit-status magit magit-repos
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mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mailabbrev
mail-utils gmm-utils mailheader pcvs-util add-log with-editor
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rng-nxml rng-valid rng-loc rng-uri rng-parse nxml-parse rng-match rng-dt
rng-util rng-pttrn nxml-ns nxml-mode nxml-outln nxml-rap sgml-mode dom
nxml-util nxml-enc xmltok make-mode jka-compr image-mode tcl elec-pair
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uniquify ediff-hook vc-hooks lisp-float-type mwheel term/x-win x-win
term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
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backquote threads dbusbind inotify lcms2 dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)

[Message part 3 (message/rfc822, inline)]

From: Eli Zaretskii <eliz <at> gnu.org>
To: Benjamin Riefenstahl <b.riefenstahl <at> turtle-trading.net>
Cc: 33990-done <at> debbugs.gnu.org
Subject: Re: bug#33990: 27.0.50;
 image-transform-fit-to-height/-width violates assert
Date: Fri, 25 Jan 2019 10:33:59 +0200

> From: Benjamin Riefenstahl <b.riefenstahl <at> turtle-trading.net>
> Cc: 33990 <at> debbugs.gnu.org
> Date: Sat, 19 Jan 2019 18:21:06 +0100
> 
> How about fixing the bug and documentation on emacs-26 (patches 1 and 2)
> and making the behaviour change (patch 3) on master?

Done, thanks.

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