[postgis-devel] different EWKB representations on different machines?

[strk at refractions.net]

On Thu, Nov 10, 2005 at 08:07:07PM +0100, Alex Mayrhofer wrote:
> strk at refractions.net wrote:
> 
> >1.0.0RC1 is known to contain memory alignment problems.
> >If you can reproduce bugs with 1.0.4 please come back on the issue.
> 
> upgraded to 1.0.4, still the same. PostgreSQL was compiled with 
> --enable-cassert, but does not report any problems at all:
> 
> query:
> 
> testdb=# select pointn(line, 2) from test;
> 
> ("line" is a 4D geometry with about 800 points)
> 
> gdb output:
> 
> Program received signal SIGBUS, Bus error.
> 0x7107a660 in ?? ()
> (gdb) bt
> #0  0x7107a660 in ?? ()
> #1  0x7107a610 in ?? ()
> Previous frame identical to this frame (corrupt stack?)
> 
> (postgres, as said before, does not report anything)
> 
> looks to me like something while traversing the geometry goes horribly 
> wrong here. how can i help tracking this down? start printf debugging?

Yes, printf debugging is the way to go.
It's lwnotice() in this case, same signature as printf().
--strk;