IconCache: Keep a ref on the GtkIconData

The icon data in GttkIconInfo->data is currently owned by the
IconThemeDir->icon_data hashtable. However, on e.g. a theme change
blow_themes() destroys the dirs and thus the data, meaning any
outstanding GtkIconInfo points to stale data.

We solve this by adding a refcount to GtkIconData and reffing it
from GtkIconInfo.

https://bugzilla.gnome.org/show_bug.cgi?id=702598

1 files changed, 1 insertions, 0 deletions

diff --git a/gtk/gtkiconcache.h b/gtk/gtkiconcache.h
index 07e909d1a3..767e2b62cc 100644
--- a/gtk/gtkiconcache.h
+++ b/gtk/gtkiconcache.h
@@ -25,6 +25,7 @@ typedef struct _GtkIconData GtkIconData;
 
 struct _GtkIconData
 {
+  gint ref;
   gboolean has_embedded_rect;
   gint x0, y0, x1, y1;