| Re: [eigen] alignment bug - or where is our non sse inversion gone? |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] alignment bug - or where is our non sse inversion gone?
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Tue, 24 Aug 2010 12:13:47 +0200
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Thanks for finding this bug.
Actually no need to define EIGEN_DONT_ALIGN_STATICALLY to hit it, simply use:
Matrix<float,4,4,DontAlign>
The fix is to do the same than for ei_quat_product, i.e., add an
Aligned/Unaligned template parameter to ei_compute_inverse_size4.
will do it.
gael
On Tue, Aug 24, 2010 at 12:06 PM, Hauke Heibel
<hauke.heibel@xxxxxxxxxxxxxx> wrote:
> On Tue, Aug 24, 2010 at 9:24 AM, Hauke Heibel
> <hauke.heibel@xxxxxxxxxxxxxx> wrote:
>> I just stumbled over a problem when using EIGEN_DONT_ALIGN_STATICALLY
>> is defined.
>
> Uups, did I mention that what is happening is an unaligned memory
> access and followed by a segfault??
>
> - Hauke
>
>
>