1  typedef __SIZE_TYPE__ size_t;
       2  
       3  int
       4  my_snprintf(char *pos, size_t left, const char *fmt, ...)
       5  {
       6    __builtin_va_list ap;
       7    __builtin_va_start(ap, fmt);
       8    const int len = __builtin_vsnprintf(pos, left, fmt, ap);
       9    __builtin_va_end(ap);
      10    return len;
      11  }