89   FILE fake;  in __sbprintf()  local
93   _FILEEXT_SETUP(&fake, &fakeext);  in __sbprintf()
95   fake._flags = fp->_flags & ~__SNBF;  in __sbprintf()
96   fake._file = fp->_file;  in __sbprintf()
97   fake._cookie = fp->_cookie;  in __sbprintf()
98   fake._write = fp->_write;  in __sbprintf()
101   fake._bf._base = fake._p = buf;  in __sbprintf()
102   fake._bf._size = fake._w = sizeof(buf);  in __sbprintf()
103   fake._lbfsize = 0; /* not actually used, but Just In Case */  in __sbprintf()
106   int ret = FUNCTION_NAME(&fake, fmt, ap);  in __sbprintf()
107   if (ret >= 0 && __sflush(&fake)) ret = EOF;  in __sbprintf()
108   if (fake._flags & __SERR) fp->_flags |= __SERR;  in __sbprintf()