#include <fcntl.h>

#define T(t) (t*)0;

#define F(t,n) {t *y = &x.;;}

#define C(n) switch(n){case n:;}

static void f()

{

C(F_DUPFD)

C(F_DUPFD_CLOEXEC)

C(F_GETFD)

C(F_SETFD)

C(F_GETFL)

C(F_SETFL)

C(F_GETLK)

C(F_SETLK)

C(F_SETLKW)

C(F_GETOWN)

C(F_SETOWN)

C(FD_CLOEXEC)

C(F_RDLCK)

C(F_UNLCK)

C(F_WRLCK)

C(SEEK_SET)

C(SEEK_CUR)

C(SEEK_END)

C(O_CREAT)

C(O_EXCL)

C(O_NOCTTY)

C(O_TRUNC)

C(O_TTY_INIT)

C(O_APPEND)

C(O_DSYNC)

C(O_NONBLOCK)

C(O_RSYNC)

C(O_SYNC)

C(O_ACCMODE)

C(O_EXEC)

C(O_RDONLY)

C(O_RDWR)

C(O_SEARCH)

C(O_WRONLY)

C(S_IRWXU)

C(S_IRUSR)

C(S_IWUSR)

C(S_IXUSR)

C(S_IRWXG)

C(S_IRGRP)

C(S_IWGRP)

C(S_IXGRP)

C(S_IRWXO)

C(S_IROTH)

C(S_IWOTH)

C(S_IXOTH)

C(S_ISUID)

C(S_ISGID)

#ifdef _XOPEN_SOURCE

C(S_ISVTX)

#endif

C(AT_FDCWD)

C(AT_EACCESS)

C(AT_SYMLINK_NOFOLLOW)

C(AT_SYMLINK_FOLLOW)

C(O_CLOEXEC)

C(O_DIRECTORY)

C(O_NOFOLLOW)

C(AT_REMOVEDIR)

C(POSIX_FADV_DONTNEED)

C(POSIX_FADV_NOREUSE)

C(POSIX_FADV_NORMAL)

C(POSIX_FADV_RANDOM)

C(POSIX_FADV_SEQUENTIAL)

C(POSIX_FADV_WILLNEED)

{

struct flock x;

F(short, l_type)

F(short, l_whence)

F(off_t, l_start)

F(off_t, l_len)

F(pid_t, l_pid)

}

T(mode_t)

T(off_t)

T(pid_t)

int(*p_fcntl)(int,int,...) = fcntl;

int(*p_posix_fadvise)(int,off_t,off_t,int) = posix_fadvise;

int(*p_posix_fallocate)(int,off_t,off_t) = posix_fallocate;

}

#ifndef _XOPEN_SOURCE

#include <sys/stat.h>

#endif

static void g()

{

int(*p_creat)(const char*,mode_t) = creat;

int(*p_open)(const char*,int,...) = open;

int(*p_openat)(int,const char*,int,...) = openat;

}