- struct _iobuf _wwbuf;
- static char buf[1024];
-
- /*
- * A danger is that when buf overflows, _flsbuf() will be
- * called automatically. It doesn't check for _IOSTR.
- * We set the file descriptor to -1 so no actual io will be done.
- */
- _wwbuf._flag = _IOWRT+_IOSTRG;
- _wwbuf._base = _wwbuf._ptr = buf;
- _wwbuf._cnt = sizeof buf;
- _wwbuf._file = -1; /* safe */
- _doprnt(fmt, &args, &_wwbuf);
- return wwwrite(w, buf, _wwbuf._ptr - buf);
-}