[mapserver-dev] Debugging MapServer and corrupt variables

[Richard Watson]

I run x64 MapServer on Windows with no problems.  I used a build from
http://www.gisinternals.com/.

I had the idea to build it myself in debug but abandoned that effort
because I did not have confidence that some of the dependent libraries
would function properly using a released version of the CRT when chunks of
Map Server were built in debug.

If someone has had success in doing this then I'd like know that.

On Tue, Mar 22, 2016 at 5:03 PM, Seth G <geographika at gmail.com> wrote:

> Hi devs,
>
> I've been trying to configure debugging a x64 version of MapServer on
> Windows in Visual Studio, but variables are shown as corrupt or missing.
> Full details are posted at
> <http://stackoverflow.com/questions/36120712/cannot-see-variables-when-debugging-a-x64-bit-dll-in-visual-studio>
> http://stackoverflow.com/questions/36120712/cannot-see-variables-when-debugging-a-x64-bit-dll-in-visual-studio
> I initially thought this was a config issue on my side, but there is a
> suggestion it could be memory corruption within MapServer.
> When compiling I get 100s of warnings similar to the following:
>
> ..\mapcrypto.c(391) : warning C4244: '=' : conversion from 'ms_uint32' to
> 'char', possible loss of data
> maptime.c
> ..\maptime.c(176) : warning C4244: '=' : conversion from '__time64_t' to
> 'long', possible loss of data
> mapproject.c
> ..\mapproject.c(1336) : warning C4267: '+=' : conversion from 'size_t' to
> 'int', possible loss of data
>
> I presume these will simply truncate data rather than be a possible cause
> for the debugging issues I encounter?
>
> A couple of other warnings that may be more relevant:
>
> /Users/tbonfort/dev/mapserver/mapparser.c(370) : warning C4273: 'malloc' :
> inconsistent dll linkage
>         c:\Program Files (x86)\Microsoft Visual Studio
> 9.0\VC\include\stdlib.h(601) : see previous definition of 'malloc'
> /Users/tbonfort/dev/mapserver/mapparser.c(377) : warning C4273: 'free' :
> inconsistent dll linkage
>         c:\Program Files (x86)\Microsoft Visual Studio
> 9.0\VC\include\stdlib.h(600) : see previous definition of 'free'
>
> Thanks for any insights you may be able to provide. I can create tickets
> for the warnings if that is useful?
>
> Regards,
>
> Seth
>
> --
> web: http://geographika.co.uk
> twitter: @geographika
>
>
>
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