__uintptr_t
typedef __uintptr_t uintptr_t;
((__size_t)(__uintptr_t)((const volatile void *)&((type *)0)->field))
#define __DECONST(type, var) ((type)(__uintptr_t)(const void *)(var))
#define __DEVOLATILE(type, var) ((type)(__uintptr_t)(volatile void *)(var))
#define __DEQUALIFY(type, var) ((type)(__uintptr_t)(const volatile void *)(var))
typedef __uintptr_t uintptr_t;
((__size_t)(__uintptr_t)((const volatile void *)&((type *)0)->field))