[pgrouting-users] core dump in server while calling driving_distance function for generating a polygon

[Stephen Woodbridge]

Dave,

This sounds like you might have multiple librouting.so look here:
/usr/lib/postgresql/8.4/lib/librouting.so
change the version to match yours.

Also try:

locate librouting.so

ldd /usr/lib/postgresql/8.4/lib/librouting.so

and make sure you do not have multiple copies of dependent libraries 
loaded. Like in /usr/lib and /usr/local/lib

See if you can determine if msg_rsv is getting a null pointer passed to 
it. But anything is possible if the loading is messed up.

-Steve

On 2/9/2012 12:57 AM, Dave Potts wrote:
>
> While calling the driving_dstance function from routing_dd_wrappers.sql,
> line  78
>
> My postgres server back DIES
>
> I tried rebuilding from source and attaching and instance of gdb to the
> server process as pg_backend_pid();
>
> By doing something like gdb /usr/lib/postgresql/9.1/bin/postgres pid
> Gdb claims that server process dies in msg_rsv
>
> I think I am using the wrong image because none of the DD code is being used.
>
> By turning on debug statments,  I managed to strace the problem to the
> c/c++ interface between alpha_shape
>
> I get lots of prints until the routine
>
>   ret = alpha_shape(vertices, total_tuples, res, res_count,&err_msg);
>
> is called.
>
> I tried puting in calls like
>
> write(2,"Hello\n",6); and  elog(ERROR, "Hello world" ,"eeee"); as the
> first line in alpha_shape, nothing evers gets printed
>
> So I suspect it might be a linking issue!
>
> Is this a known problem?
>
> What process image should I be attaching gbc to?
>
>
> regards
>
>
>
> Dave
>
>