Bug#953810: /usr/bin/xmag: [xmag] Doesn't show the pixel RGB value any more.

[boffi <giacomo.boffi@gmail.com>]

Package: x11-apps
Version: 7.7+8
Severity: important
File: /usr/bin/xmag

Dear Maintainer,

sometimes I use xmag to query the RGB value of a pixel on the screen
but now if I click in its window instead of a display of the RGB value
I see, in the terminal window from which I launched it, the error message

X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  91 (X_QueryColors)
  Value in failed request:  0xfff0fff0
  Serial number of failed request:  508
  Current serial number in output stream:  508

(the serial number varies over different attempts).

In this example, the sampled color is a very light green and probably the last
three bytes "f0 ff f0" of the out of range parameter are indeed the RGB values
under investigation.

Thank you, gb

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.4.0-4-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages x11-apps depends on:
ii  libc6        2.29-10
ii  libpng16-16  1.6.37-2
ii  libsm6       2:1.2.3-1
ii  libx11-6     2:1.6.9-2
ii  libxaw7      2:1.0.13-1+b2
ii  libxcursor1  1:1.2.0-2
ii  libxext6     2:1.3.3-1+b2
ii  libxft2      2.3.2-2
ii  libxkbfile1  1:1.0.9-2+b12
ii  libxmu6      2:1.1.2-2+b3
ii  libxmuu1     2:1.1.2-2+b3
ii  libxrender1  1:0.9.10-1
ii  libxt6       1:1.1.5-1+b3
ii  man-db       2.9.1-1

Versions of packages x11-apps recommends:
ii  xbitmaps  1.1.1-2

Versions of packages x11-apps suggests:
ii  mesa-utils  8.4.0-1+b1

-- no debconf information