[Mono-dev] NRE when using pointers on armhf

[Zoltan Varga]

Hi,

  You can check whenever the pointer is aligned by converting it into an
int.

             Zoltan

On Thu, Mar 26, 2015 at 4:53 PM, Slide <slide.o.mix at gmail.com> wrote:

> That's a good point! Can you tell me where in the mono code that the
> unaligned accesses are handled? I'd just like to confirm.
>
> Thanks!
>
> slide
>
> On Thu, Mar 26, 2015 at 1:13 PM Zoltan Varga <vargaz at gmail.com> wrote:
>
>> Hi,
>>
>>  arm might require aligned reads, i.e. 'p' should be 4 byte aligned in
>> this case.
>>
>>           Zoltan
>>
>> On Thu, Mar 26, 2015 at 3:28 PM, Slide <slide.o.mix at gmail.com> wrote:
>>
>>> I am trying to compile and use the ZeroC Ice remoting library for armhf
>>> to run on my RaPi 2. The compilation goes fine, but when running the test
>>> suite I am getting a NullReferenceException on the pointer assignment in
>>> the following code:
>>>
>>> fixed(byte* p = &_bytes[_position])
>>> {
>>>     *((float*)p) = _valBytes.floatVal; // exception here
>>> }
>>>
>>> This same code works on x86_64, so I am assuming there is something that
>>> is missing in the armhf implementation.
>>>
>>> Is there something I can do to debug what might be missing and provide a
>>> patch? I've never done work on the mono runtime itself.
>>>
>>> Thanks,
>>>
>>> slide
>>>
>>>
>>> _______________________________________________
>>> Mono-devel-list mailing list
>>> Mono-devel-list at lists.ximian.com
>>> http://lists.ximian.com/mailman/listinfo/mono-devel-list
>>>
>>>
>>
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