io_binwrite      1437 io.c               return io_binwrite(str, RSTRING_PTR(str), RSTRING_LEN(str),
io_binwrite      1448 io.c               return (ssize_t)io_binwrite(0, buf, (long)size, fptr, 0);
io_binwrite      10651 io.c                       if (io_binwrite(str, RSTRING_PTR(str), RSTRING_LEN(str), dst_fptr, 0) < 0)