diff -up webkit-qtwebkit/Source/JavaScriptCore/wtf/gobject/GTypedefs.h.glib231 webkit-qtwebkit/Source/JavaScriptCore/wtf/gobject/GTypedefs.h
--- webkit-qtwebkit/Source/JavaScriptCore/wtf/gobject/GTypedefs.h.glib231	2011-09-13 15:23:44.000000000 -0500
+++ webkit-qtwebkit/Source/JavaScriptCore/wtf/gobject/GTypedefs.h	2011-11-18 13:42:40.348070699 -0600
@@ -52,7 +52,7 @@ typedef struct _GFile GFile;
 typedef struct _GHashTable GHashTable;
 typedef struct _GInputStream GInputStream;
 typedef struct _GList GList;
-typedef struct _GMutex GMutex;
+typedef union _GMutex GMutex;
 typedef struct _GPatternSpec GPatternSpec;
 typedef struct _GPollableOutputStream GPollableOutputStream;
 typedef struct _GSocketClient GSocketClient;