Re: [Libexif-devel] Exif tag missing when loading a jpeg file on mips

[Pavan K. <pav...@gm...>]

Hi,
Looks like we might need some fixes in the utility functions.
http://stackoverflow.com/questions/12032122/integer-overflow-not-consistent
Let me know if you disagree.
Regards,
Pavan

On Mon, Aug 6, 2012 at 4:11 PM, Pavan Kulkarni <pav...@gm...> wrote:

> Hi Jan, All
> Pardon me for the naive question.
> I see that most functions in exif-utils.c (such as exif_get_short() ) are
> of type uintxx_t but they actually return value of type intxx_t (the
> mentioned function internally calls exif_get_sshort)
> Will this not cause undefined behavior?
> For the problem I described, I suspect this to be an issue.
> Any inputs will be much appreciated.
>
> Regards
> Pavan
>
> On Fri, Aug 3, 2012 at 12:28 PM, Jan Patera <pa...@pi...> wrote:
>
>> Pavan,
>>
>> looks like you have a 64bit build? If so, could you please provide me your
>> JPG file?
>> libexif has not been tested well on 64 bit platforms yet.
>>
>>  --- Jan
>>
>> > On further debugging, found that I'm getting an invalid tag from the raw
>> > IFD data.
>> > I think it is expected to get this tag EXIF_TAG_EXIF_IFD_POINTER
>> (0x8769)
>> > .. But I'm actually getting (0xFFFFFFFFFFFF8769) which messes up the
>> whole
>> > tag extraction and gives an unknown tag which is negative -30871
>> > Does anyone have any clue about this problem...
>> > Strangely, it works fine on my linux machine.
>> >
>> > Regards,
>> > Pavan
>> >
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