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#include <nonstd/io.h>
struct __FILE {
fpos_t pos;
char *buf;
enum { SUPPLIED, ALLOCED, UNSET } buftype;
int buffering;
int bsize;
int isopen;
int flags;
int lastop;
/* verified necessary */
int fd;
int oflag;
int orientation;
int eof;
int err;
int nlocks;
int thread;
#ifdef _POSIX_SOURCE
pid_t pipe_pid;
#else
long int pipe_pid;
#endif
struct {
char *buf;
size_t size;
int allocated;
} mem;
struct __FILE *prev;
struct __FILE *next;
};
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