GTK2 declares it's types in an enum from gtypes which results in integers.
But all types are extracted from va_list as GType (gulong)), this is 
forbidden on Hammer, as the va_args-handling on Hammer is ISO-C conform
which means
you cannot insert an int and extract a long type.
(This is valid on any other 64-bit platform!)
On 32-bit platforms it doesn't matter, as sizeof(long)==sizeof(int).

We now just casted the GTK_TYPE_* to GType,
so it works. (see patch below)

The same problem exists in libbonobo and libbonobo_ui,
there the va_list end is marked with 0, which also is an integer.
We just exchanged the '0' with '(glong)0' in all functions.

Gedit had a function which expected an 'int*' but was given a '&gsize'
(gsize == long). which leads also to unpredictable results. 



--- ./gtk/gtktypeutils.h.ORG    2002-09-05 16:51:38.000000000 +0200
+++ ./gtk/gtktypeutils.h        2002-09-05 16:52:43.000000000 +0200
@@ -61,6 +61,26 @@
   GTK_TYPE_POINTER     = G_TYPE_POINTER
 } GtkFundamentalType;

+ #define   GTK_TYPE_INVALID      (GType) GTK_TYPE_INVALID
+ #define   GTK_TYPE_NONE         (GType) GTK_TYPE_NONE
+ #define   GTK_TYPE_ENUM         (GType) GTK_TYPE_ENUM
+ #define   GTK_TYPE_FLAGS        (GType) GTK_TYPE_FLAGS
+
+   /* GtkArg types */
+ #define   GTK_TYPE_CHAR         (GType) GTK_TYPE_CHAR
+ #define   GTK_TYPE_UCHAR        (GType) GTK_TYPE_UCHAR
+ #define   GTK_TYPE_BOOL         (GType) GTK_TYPE_BOOL
+ #define   GTK_TYPE_INT          (GType) GTK_TYPE_INT
+ #define   GTK_TYPE_UINT         (GType) GTK_TYPE_UINT
+ #define   GTK_TYPE_LONG         (GType) GTK_TYPE_LONG
+ #define   GTK_TYPE_ULONG        (GType) GTK_TYPE_ULONG
+ #define   GTK_TYPE_FLOAT        (GType) GTK_TYPE_FLOAT
+ #define   GTK_TYPE_DOUBLE       (GType) GTK_TYPE_DOUBLE
+ #define   GTK_TYPE_STRING       (GType) GTK_TYPE_STRING
+ #define   GTK_TYPE_BOXED        (GType) GTK_TYPE_BOXED
+ #define   GTK_TYPE_POINTER      (GType) GTK_TYPE_POINTER
+
+
 /* --- type macros --- */
 #define GTK_CLASS_NAME(class)          (g_type_name (G_TYPE_FROM_CLASS
(class)))
 #define GTK_CLASS_TYPE(class)          (G_TYPE_FROM_CLASS (class))