public Mruby()
{
_clearerr = clearerr;
_feof = feof;
_getc = getc;
_fwrite = fwrite;
_fflush = fflush;
_abort = abort;
set_func(_clearerr, _feof, _getc, _fwrite, _fflush, _abort);
}
extern static void set_func(clearerr_t pclearerr, feof_t pfeof, getc_t pgetc, fwrite_t pfwrite, fflush_t pfflush, abort_t pabort);