Ubuntu
debconf package

  1. Bug #1627564
  2. Comment #12

Comment 12 for bug 1627564

Revision history for this message
Iain Lane (laney) wrote : Re: Debconf crash due to assertion failure in ensure_surface_for_gicon [gtkiconhelper.c:493] (when png loader is missing/during upgrades)

> OTOH I think there is an easy fix for GTK+ to always include an "image-missing" icon at compile time

I'm sorry, it's not that easy. A PNG icon is indeed included, and it gets found properly (also from the actual icon theme; that is a dependency of GTK). The problem is the ability to load PNGs *at all* is not available sometimes during the middle of dist-upgrades.

I think extending that test program in Debconf (referred to in the IRC log above) to do a bit more work - trying to load an icon - might make the fallback trigger in this case too.

e.g:

  my $window = Gtk3::Window->new('toplevel');
  my $icontheme = Gtk3::IconTheme::get_default;
  my $icon = $icontheme->load_icon('image-missing', 32, []);

If you manually remove '/usr/lib/*/gdk-pixbuf-2.0/2.10.0/loaders.cache' (suggest doing this in a VM) then you can reproduce this by extracting the program out of Debconf.