#undef ctf_string
#define ctf_string(_item, _src)
+#undef ctf_custom_field
+#define ctf_custom_field(_type, _item, _code)
+
+#undef ctf_custom_type
+#define ctf_custom_type(...)
+
+#undef ctf_custom_code
+#define ctf_custom_code(...)
+
+#undef ctf_align
+#define ctf_align(_type)
+
/* "nowrite" */
#undef ctf_integer_nowrite
#define ctf_integer_nowrite(_type, _item, _src)