__printflike
static void __printflike(1, 2)
#define __printflike(fmtarg, firstvararg) \
static __dead2 __printflike(3, 4) void
static void __printflike(2, 3)
#define __printflike(fmtarg, firstvararg) \
#define __printflike(_a,_b) \
static void __printflike(1, 2)
static void __printflike(1, 2)
# define __printflike(fmtarg, firstvararg)