GNOME Bugzilla – Bug 651067
Icon cache should use actual magic
Last modified: 2014-10-20 03:52:56 UTC
Instead of just the version of the file. Some versions of the icon-theme.cache generated end up having the same magic as TrueType fonts: https://bugs.freedesktop.org/show_bug.cgi?id=21123 Adding "GTK-ICON-CACHE " as the magic header would help avoid this sort of problems.
I don't think we can do this compatibly