#undef __field_ext
#define __field_ext(_type, _item, _filter_type) __field(_type, _item)
#undef __array
#define __array(_type, _item, _length) \
#undef __field_ext
#define __field_ext(_type, _item, _filter_type) __field(_type, _item)
#undef __array
#define __array(_type, _item, _length) \