[sldev] [VWR] OpenJPEG backtraces (Robin Cornelius)
Robin Cornelius
robin.cornelius at gmail.com
Sat Sep 22 07:51:34 PDT 2007
Dzonatas wrote:
> Argent Stonecutter wrote:
>> Finally, the original code is amusing because the "unsigned" type was
>> introduced to C because people were having to cast ints to pointers to
>> get unsigned arithmetic. Since this is arithmetic on pointers to begin
>> with... :)
>> _______________________________________________
>>
>
> Some compilers don't allow that to happen, so you cast them to unsigned.
>
> 16 byte boundaries are needed for SSE. The instructions just before it
> add the pad, which is just once and a little bit for the entire image.
> The alignment in that part is not mandatory but helps avoid non 16 byte
> aligned pointers later on.
>
>
Oh guys as a follow up i think this is this bug
http://jira.secondlife.com/browse/VWR-1864
I was certainly seeing the crash in dwt_decode_tile() before i had a
openjpeg with full debug (cause there are some inline functions there
that the full trace shows).
Regards
Robin
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