[freetds] SQLGetData() returns len 4095 for empty TEXT on AIX 6.1 without ClientCharset defined

Sebastien FLAESCH sf at 4js.com
Fri Apr 5 02:57:47 EDT 2013


Great!

I will test the last version...

Keep in mind my remark about invalid iconv names. During my tests, I saw
that an invalid ClientCharset value was just ignored. By mistake I used
a system locale (LANG/LC_ALL) name instead of an iconv charset name...

If iconv cannot initialize properly, freetds lib should stop with an error.

Seb

On 04/04/2013 10:21 PM, Frediano Ziglio wrote:
> Fix in git repository. Also fixed problem with AIX and SQLPutData with 0
> bytes.
>
> Frediano
>
>
> 2013/4/4 Frediano Ziglio<freddy77 at gmail.com>
>
>> Found!
>>
>> Actually the problem is in iconv AIX implementation, iconv is a function
>> like
>>
>> size_t iconv(iconv_t cd,
>>                      char **inbuf, size_t *inbytesleft,
>>                      char **outbuf, size_t *outbytesleft);
>>
>> if *inbuf is NULL and *inbytesleft is 0 AIX threat input as an infinite
>> buffer with zeroes so it convert an empty string (cause for libTDS view is
>> an empty string) to a set of zeroes (actually up to the output buffer which
>> is 4095 if you take into account space for terminator).
>>
>> The simpler fix is to test and assume empty string if *inbytesleft == 0 in
>> tds_iconv.
>>
>> Frediano
>>
>>
>>
>> 2013/4/2 Sebastien FLAESCH<sf at 4js.com>
>>
>>> Ok thanks.
>>> We'll setup one of our AIX machines to give you access.
>>> Seb
>>>
>>> On 03/30/2013 04:24 PM, Frediano Ziglio wrote:
>>>> Can I have access to one of the AIX machines ??
>>>>
>>>> I'm currently on holidays, I'll be back on Thursday.
>>>>
>>>> Frediano
>>>
>>>
>>> _______________________________________________
>>> FreeTDS mailing list
>>> FreeTDS at lists.ibiblio.org
>>> http://lists.ibiblio.org/mailman/listinfo/freetds
>>>
>>
>>
> _______________________________________________
> FreeTDS mailing list
> FreeTDS at lists.ibiblio.org
> http://lists.ibiblio.org/mailman/listinfo/freetds
>



More information about the FreeTDS mailing list