SIGBUS on ( double * )

[Marco Bernasocchi]

Hi Bogdan, thanks for the quick response. So I was dreaming about the 
fact that it used to work? and that it might be a compiler flag?

so is my only option memcpy? here [0] they talk about -malign-double, 
could it be of any help?

ciao and thanks a lot
Marco

[0] 
http://software.intel.com/en-us/blogs/2011/08/18/understanding-x86-vs-arm-memory-alignment-on-android

On 10/23/2013 07:32 PM, BogDan Vatra wrote:
> Hi,
>
> It happens because you are trying to access unaligned memory which on arm
> is not allowed.
>
> Cheers,
> BogDan.
> Pe 23.10.2013 20:12, "Marco Bernasocchi" <marco at bernawebdesign.ch> a scris:
>
>> Hi all, I often get SIGBUS when my code (qgis.org) hits stuff like this:
>>
>> GEOSCoordSeq_getX( cs, j, ( double * )&mGeometry[position] );
>>
>> if I change the call to use memcpy like
>>
>> double a;
>> memcpy( a, &mGeometry[position])
>> GEOSCoordSeq_getX( cs, j, &a )
>>
>> then all works correctly, the issue is that I've a lot of those calls and
>> If I'm not wrong in the past it used to work). could this be because of a
>> compiler setting? I'm using necessitas Qt sdk with ndk r8b1 compiling both
>> with -mthumb and without has the same issue.
>>
>> thanks a lot
>> Marco
>> --
>> Marco Bernasocchi
>> http://opengis.ch
>>
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-- 
Marco Bernasocchi
http://opengis.ch