[ubuntu-mono] [Bug 291189] Re: f-spot crashes on startup when color management enabled

[Chris Coulson]

** Description changed:

  Binary package hint: f-spot
  
  1) Interpid, upgraded from Hardy on the release date, amd64
  2) f-spot 0.5.0.3-0ubuntu2
  3) f-spot starts with color managed display
  4) When I enable color management from f-spot's preferences menu, f-spot won't start anymore. Starting it from a console gives
  $ f-spot
  [Info  17:33:27.950] Initializing DBus
  [Info  17:33:28.056] Initializing Mono.Addins
  [Info  17:33:28.418] Starting new FSpot server
  error checking orientation
  [Info  17:33:30.103] Starting BeagleService
  [Info  17:33:30.103] Hack for gnome-settings-daemon engaged
  
  (f-spot:7434): GdkPixbuf-WARNING **: GdkPixbufLoader finalized without calling gdk_pixbuf_loader_close() - this is not allowed. You must explicitly end the data stream to the loader before dropping the last reference.
  error checking orientation
  [Info  17:33:39.553] Exiting
  rose at harper:~$ f-spot
  [Info  17:33:41.237] Initializing DBus
  [Info  17:33:41.323] Initializing Mono.Addins
  [Info  17:33:41.455] Starting new FSpot server
  error checking orientation
  [Info  17:33:42.425] Starting BeagleService
  [Info  17:33:42.425] Hack for gnome-settings-daemon engaged
  Exception in Gtk# callback delegate
    Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
  System.NullReferenceException: Object reference not set to an instance of an object
    at TagSelectionWidget.IconDataFunc (Gtk.TreeViewColumn column, Gtk.CellRenderer renderer, TreeModel model, TreeIter iter) [0x00000] 
    at GtkSharp.TreeCellDataFuncWrapper.NativeCallback (IntPtr tree_column, IntPtr cell, IntPtr tree_model, IntPtr iter, IntPtr data) [0x00000] 
     at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
     at GtkSharp.TreeCellDataFuncWrapper.NativeCallback(IntPtr tree_column, IntPtr cell, IntPtr tree_model, IntPtr iter, IntPtr data)
     at GtkSharp.TreeCellDataFuncWrapper.NativeCallback(IntPtr , IntPtr , IntPtr , IntPtr , IntPtr )
     at Gtk.Application.gtk_main()
     at Gtk.Application.gtk_main()
     at Gtk.Application.Run()
     at Gnome.Program.Run()
     at FSpot.Driver.Main(System.String[] args)
  
  
  I can disable color management via gconf-editor and it starts flawlessly again.
  
  ==========
  
  The impact of this bug is that if a user enables Color Management out of
  curiosity, F-Spot will not work next start next time they try to use it.
  Although the user can fix it by changing a gconf key, this will not be
  obvious to most users.
  
  The bug has been addressed by backporting the patch from SVN. The crash
  is caused because a null check is performed on the wrong object, and the
  patch attached addresses this.
  
  TEST CASE:
  1) With F-Spot version 0.5.0.3-0ubuntu2, go to Edit -> Preferences and enable 'Color Management'.
  2) Close F-Spot
  3) Attempt to re-open F-Spot and notice that is crashes immediately.
  4) Recover F-Spot by doing "gconftool-2 --type bool -s /apps/f-spot/ui/color_management_enabled 0"
- 5) Install the version of F-Spot with the patch
+ 5) Install the version of F-Spot with the full patch (0.5.0.3-0ubuntu4)
  6) Enable 'Color Management' as before.
  7) Close F-Spot
  8) Open F-Spot again and notice that it no longer crashes
+ ====
+ 9) In addition to this, show tags in the left-hand pane and make sure it doesn't crash.
+ 10) With tags shown in the left-hand pane, go to View - Tag Icons and select every icon size in turn (HIdden, Small, Medium, Large), making sure that no crash occurs and tag icon size is updated correctly.
+ 11) With tag icons displayed (not hidden), make sure that you have at least one tag that has no icon defined, verifying that no crash occurs

** Tags removed: verification-failed

-- 
f-spot crashes on startup when color management enabled
https://bugs.launchpad.net/bugs/291189
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