[Insight-developers] ITK and gcc 4.4.0

[Luis Ibanez]

Hi Arnaud,

Thanks for pointing this out.

The warning

*

/.../Insight/Utilities/gdcm/src/gdcmDocument.cxx:2182: warning:
dereferencing type-punned pointer will break strict-aliasing rules

*
 for the expression:

   char deb[256];
   uint16_t  s16;

   s16 = *((uint16_t *)(deb));


Indicates a real problem.


I believe, the correct way of performing this conversion
is by using a union {}.


We may have to rework some expressions to fix these
warnings.


Just out of curiosity:
Did you updated gcc as a package ?
or did you build it in your system ?



   Thanks


      Luis


---------------------------------------
On Wed, Jun 10, 2009 at 9:31 AM, Arnaud Gelas
<arnaud_gelas at hms.harvard.edu>wrote:

> Hi guys,
>
> Yesterday I updated sanchome's OS. From last night this machine has now gcc
> 4.4.0 installed (despite it was reported gcc 4.3.2 on the dashboard).
> Apparently it has generated a lot of warnings...
>
> http://www.cdash.org/CDash/viewBuildError.php?type=1&buildid=352211
> http://www.cdash.org/CDash/viewBuildError.php?type=1&buildid=352274
>
> Regards,
> Arnaud
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