DECLARE_LRECORD (extent, struct extent);
#define XEXTENT(x) XRECORD (x, extent, struct extent)
#define XSETEXTENT(x, p) XSETRECORD (x, p, extent)
#define EXTENTP(x) RECORDP (x, extent)
DECLARE_LRECORD (extent, struct extent);
#define XEXTENT(x) XRECORD (x, extent, struct extent)
#define XSETEXTENT(x, p) XSETRECORD (x, p, extent)
#define EXTENTP(x) RECORDP (x, extent)