[FFmpeg-devel] [PATCH 05/18] avformat/whip: fix format string for printing size_t

[Andreas Rheinhardt]

Timo Rothenpieler:
> On 03.07.2025 19:16, Andreas Rheinhardt wrote:
>> Timo Rothenpieler:
>>> ---
>>>   libavformat/whip.c | 6 +++---
>>>   1 file changed, 3 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/libavformat/whip.c b/libavformat/whip.c
>>> index 7cd3f48ba9..71c667cd31 100644
>>> --- a/libavformat/whip.c
>>> +++ b/libavformat/whip.c
>>> @@ -926,7 +926,7 @@ static int parse_answer(AVFormatContext *s)
>>>       if (whip->state < WHIP_STATE_NEGOTIATED)
>>>           whip->state = WHIP_STATE_NEGOTIATED;
>>>       whip->whip_answer_time = av_gettime();
>>> -    av_log(whip, AV_LOG_VERBOSE, "SDP state=%d, offer=%luB,
>>> answer=%luB, ufrag=%s, pwd=%luB, transport=%s://%s:%d, elapsed=%dms\n",
>>> +    av_log(whip, AV_LOG_VERBOSE, "SDP state=%d, offer=%zuB,
>>> answer=%zuB, ufrag=%s, pwd=%zuB, transport=%s://%s:%d, elapsed=%dms\n",
>>>           whip->state, strlen(whip->sdp_offer), strlen(whip-
>>> >sdp_answer), whip->ice_ufrag_remote, strlen(whip->ice_pwd_remote),
>>>           whip->ice_protocol, whip->ice_host, whip->ice_port,
>>> ELAPSED(whip->whip_starttime, av_gettime()));
>>>   @@ -977,7 +977,7 @@ static int ice_create_request(AVFormatContext
>>> *s, uint8_t *buf, int buf_size, in
>>>       /* The username is the concatenation of the two ICE ufrag */
>>>       ret = snprintf(username, sizeof(username), "%s:%s", whip-
>>> >ice_ufrag_remote, whip->ice_ufrag_local);
>>>       if (ret <= 0 || ret >= sizeof(username)) {
>>> -        av_log(whip, AV_LOG_ERROR, "Failed to build username %s:%s,
>>> max=%lu, ret=%d\n",
>>> +        av_log(whip, AV_LOG_ERROR, "Failed to build username %s:%s,
>>> max=%zu, ret=%d\n",
>>>               whip->ice_ufrag_remote, whip->ice_ufrag_local,
>>> sizeof(username), ret);
>>>           ret = AVERROR(EIO);
>>>           goto end;
>>> @@ -1420,7 +1420,7 @@ static int setup_srtp(AVFormatContext *s)
>>>       if (whip->state < WHIP_STATE_SRTP_FINISHED)
>>>           whip->state = WHIP_STATE_SRTP_FINISHED;
>>>       whip->whip_srtp_time = av_gettime();
>>> -    av_log(whip, AV_LOG_VERBOSE, "SRTP setup done, state=%d,
>>> suite=%s, key=%luB, elapsed=%dms\n",
>>> +    av_log(whip, AV_LOG_VERBOSE, "SRTP setup done, state=%d,
>>> suite=%s, key=%zuB, elapsed=%dms\n",
>>>           whip->state, suite, sizeof(send_key), ELAPSED(whip-
>>> >whip_starttime, av_gettime()));
>>>     end:
>>
>> Why not SIZE_SPECIFIER?
> 
> According to C99, %zu is the format specifier for size_t, so should work
> everywhere?
IIRC some version of MSVCRT doesn't support it nevertheless. I don't
know whether we still support it, though.

- Andreas