diff options
Diffstat (limited to 'py/stream.c')
| -rw-r--r-- | py/stream.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/py/stream.c b/py/stream.c index fcdd6be725..0fb57118c6 100644 --- a/py/stream.c +++ b/py/stream.c @@ -414,12 +414,14 @@ STATIC mp_obj_t stream_ioctl(size_t n_args, const mp_obj_t *args) { const mp_stream_p_t *stream_p = mp_get_stream_raise(args[0], MP_STREAM_OP_IOCTL); mp_buffer_info_t bufinfo; - uintptr_t val; - if (MP_OBJ_IS_INT(args[2])) { - val = mp_obj_get_int(args[2]); - } else { - mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_READ); - val = (uintptr_t)bufinfo.buf; + uintptr_t val = 0; + if (n_args > 2) { + if (MP_OBJ_IS_INT(args[2])) { + val = mp_obj_get_int(args[2]); + } else { + mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_WRITE); + val = (uintptr_t)bufinfo.buf; + } } int error; |