[mapserver-users] MapServer 4 vs 5 seg fault

[Liz Godwin]

ok.  different problem then.  I see nothing wrong with the expression
offhand.  Perhaps the data type support has changed between versions?

On Tue, Apr 21, 2009 at 11:36 AM, Michael E Masscotte <masscotm at erau.edu>wrote:

> I haven't tried RHEL5 yet, but it happens with RHEL 4 and Solaris 10.
>
> Liz Godwin wrote:
>
>  I've noticed a similar problem with EXPRESSION statements, but
>> inconsistantly.  Are you running MS on Red Hat 5 by any chance?
>>
>> On Tue, Apr 21, 2009 at 11:05 AM, Michael E Masscotte <masscotm at erau.edu<mailto:
>> masscotm at erau.edu>> wrote:
>>
>>    I've done some more investigation and found the seg fault happens
>>    with a call to msDrawRasterLayerGDAL() according to gdb. I also
>>    found what is tripping the core dump in the map file. I have an
>>    class with 'EXPRESSION ([pixel] > 0)' so mapserver does not draw
>>    black pixels. When I remove this, it works fine although it has
>>    the black pixels I don't want. So, it appears I'm doing something
>>    wrong with the EXPRESSION statement. Any one have any ideas how to
>>    fix this or workaround it? Again, what I find strange is that this
>>    works fine in MapServer 4.x but not 5.x.
>>
>>    Thanks for your help,
>>    -Mike
>>
>>
>>
>>    Michael E Masscotte wrote:
>>
>>        I have a php script that generates a png from geotiff tiles.
>>        The tiles are indexed using gdaltindex. The php script works
>>        fine for MapServer 4.10.x but seg faults for version 5.x.x.
>>        Does anyone know of any differences between version 4 and 5
>>        that would cause this? Could it be from an older version of
>>        gdal that the tiles are being generated with? This happens in
>>        both RedHat Linux 4 as well as on our Solaris machines. I can
>>        provide more details if someone can point me in the right
>>        direction on where to look first for a problem.
>>
>>        Thanks is advance for any insight any one might provide!
>>        -Mike
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