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#include <stdlib.h>
#include <errno.h>
int __ptsname_r(int, char *, size_t);
char *ptsname(int fd)
{
static char buf[9 + sizeof(int)*3 + 1];
int err = __ptsname_r(fd, buf, sizeof buf);
if (err) {
errno = err;
return 0;
}
return buf;
}
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