diff -ruN qt-everywhere-opensource-src-5.1.1-orig/qtscript/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Threading.h qt-everywhere-opensource-src-5.1.1/qtscript/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Threading.h
--- qt-everywhere-opensource-src-5.1.1-orig/qtscript/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Threading.h	2013-08-25 20:04:35.000000000 +0200
+++ qt-everywhere-opensource-src-5.1.1/qtscript/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Threading.h	2013-09-25 18:09:22.154639482 +0200
@@ -81,7 +81,7 @@
 #include <pthread.h>
 #elif PLATFORM(GTK)
 #include <wtf/gtk/GOwnPtr.h>
-typedef struct _GMutex GMutex;
+typedef union _GMutex GMutex;
 typedef struct _GCond GCond;
 #endif