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[Sebastien Bacher <seb128@xxxxxxxxxx>]

Thank you for taking the time to report this bug and helping to make
Ubuntu better. The issue you are reporting is an upstream one and it
would be nice if somebody having it could send the bug to the developers
of the software by following the instructions at
https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please
tell us the number of the upstream bug (or the link), so we can add a
bugwatch that will inform us about its status. Thanks in advance.

** Package changed: gtk+3.0 (Ubuntu) => ubuntu

** Changed in: ubuntu
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/916196

Title:
  gdk_cairo_region_create_from_surface() broken on big endian

Status in Ubuntu:
  New

Bug description:
  When using gdk_cairo_region_create_from_surface() on a big endian
  system, the points in the resulting region get reversed in horizontal
  groups of 8.  I've attached an example program that clearly shows the
  problem, and I'll attach screenshots from running it on  amd64 (little
  endian, works) and ppc (big endian, does not work).

  The output from the program when running on ppc is

  R 0: 0
  R 1: 0
  R 2: 0
  R 3: 0
  R 4: 0
  R 5: 0
  R 6: 0
  R 7: 8
  R 8: 8
  R 9: 8

  but the expected output is

  R 0: 1
  R 1: 2
  R 2: 3
  R 3: 4
  R 4: 5
  R 5: 6
  R 6: 7
  R 7: 8
  R 8: 9
  R 9: 10

  Since the text output is wrong, my conclusion is that the bug is in
  gdk_cairo_region_create_from_surface(), and not in
  gtk_widget_shape_combine_region().

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