[Pkg-gmagick-im-team] Bug#731157: imagemagick: "convert -crop" doesn't just crop, but makes the output darker than the input

[Vincent Lefevre]

Package: imagemagick
Version: 8:6.7.7.10-6
Severity: important

(Severity set to important because this is some kind of unexpected
corruption.)

"convert -crop" doesn't just crop, but makes the output darker than
the input.

I have attached 4 files:
  * screenshot.png and crop-bug.sh to reproduce the bug.
  * crop-display.png and crop-convert.png is what I obtain
    (I've taken the screenshots with gnome-screenshot as "import"
    also occasionally seems to be buggy, making the images darker
    than shown on the screen).

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.11-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages imagemagick depends on:
ii  hicolor-icon-theme  0.12-1
ii  libbz2-1.0          1.0.6-5
ii  libc6               2.17-97
ii  libfontconfig1      2.11.0-1+local1
ii  libfreetype6        2.5.1-1
ii  libglib2.0-0        2.36.4-1
ii  libgomp1            4.8.2-7
ii  libice6             2:1.0.8-2
ii  libjpeg8            8d-1
ii  liblcms2-2          2.2+git20110628-2.3
ii  liblqr-1-0          0.4.1-2
ii  libltdl7            2.4.2-1.3+local1
ii  liblzma5            5.1.1alpha+20120614-2
ii  libmagickcore5      8:6.7.7.10-6
ii  libmagickwand5      8:6.7.7.10-6
ii  libsm6              2:1.2.1-2
ii  libtiff4            3.9.7-2
ii  libx11-6            2:1.6.2-1
ii  libxext6            2:1.3.2-1
ii  libxt6              1:1.1.4-1
ii  zlib1g              1:1.2.8.dfsg-1

Versions of packages imagemagick recommends:
ii  ghostscript           9.05~dfsg-8
ii  libmagickcore5-extra  8:6.7.7.10-6
ii  netpbm                2:10.0-15+b1
ii  ufraw-batch           0.19.2-2

Versions of packages imagemagick suggests:
pn  autotrace                            <none>
ii  cups-bsd [lpr]                       1.6.4-2
ii  curl                                 7.33.0-1
pn  enscript                             <none>
ii  ffmpeg                               6:0.8.9-1
ii  gimp                                 2.8.6-1
ii  gnuplot                              4.6.4-1
pn  grads                                <none>
ii  groff-base                           1.22.2-3
pn  hp2xx                                <none>
pn  html2ps                              <none>
ii  imagemagick-doc                      8:6.7.7.10-6
pn  libwmf-bin                           <none>
ii  mplayer                              2:1.0~rc4.dfsg1+svn34540-1+b2
pn  povray                               <none>
pn  radiance                             <none>
ii  sane-utils                           1.0.23-3
ii  texlive-binaries [texlive-base-bin]  2013.20130729.30972-2
ii  transfig                             1:3.2.5.e-1
ii  xdg-utils                            1.1.0~rc1+git20111210-7

-- no debconf information
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