id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
27472	GEOSGeometry('POINT EMPTY').ogr crashes	Sergey Fedoseev	Sergey Fedoseev	"{{{
#!div style=""font-size: 80%""
{{{#!python
In [1]: from django.contrib.gis.geos import GEOSGeometry

In [2]: GEOSGeometry('POINT EMPTY').ogr
No handlers could be found for logger ""django.contrib.gis""
---------------------------------------------------------------------------
GEOSException                             Traceback (most recent call last)
<ipython-input-2-2913b5e786ad> in <module>()
----> 1 GEOSGeometry('POINT EMPTY').ogr

/home/sergey/dev/django/django/contrib/gis/geos/geometry.pyc in ogr(self)
    484             except gdal.SRSException:
    485                 pass
--> 486         return gdal.OGRGeometry(self.wkb)
    487
    488     @property

/home/sergey/dev/django/django/contrib/gis/geos/geometry.pyc in wkb(self)
    450         `ewkb` property instead.
    451         """"""
--> 452         return wkb_w(3 if self.hasz else 2).write(self)
    453
    454     @property

/home/sergey/dev/django/django/contrib/gis/geos/prototypes/io.pyc in write(self, geom)
    227     def write(self, geom):
    228         ""Returns the WKB representation of the given geometry.""
--> 229         return six.memoryview(wkb_writer_write(self.ptr, geom.ptr, byref(c_size_t())))
    230
    231     def write_hex(self, geom):

/home/sergey/dev/django/django/contrib/gis/geos/libgeos.pyc in __call__(self, *args, **kwargs)
    155         if self.func is None:
    156             self.func = self.get_func(*self.args, **self.kwargs)
--> 157         return self.func(*args, **kwargs)
    158
    159     def get_func(self, *args, **kwargs):

/home/sergey/dev/django/django/contrib/gis/geos/prototypes/threadsafe.pyc in __call__(self, *args)
     54             # Call the threaded GEOS routine with pointer of the context handle
     55             # as the first argument.
---> 56             return self.cfunc(self.thread_context.handle.ptr, *args)
     57         else:
     58             return self.cfunc(*args)

/home/sergey/dev/django/django/contrib/gis/geos/prototypes/errcheck.pyc in check_sized_string(result, func, cargs)
     60     """"""
     61     if not result:
---> 62         raise GEOSException('Invalid string pointer returned by GEOS C function ""%s""' % func.__name__)
     63     # A c_size_t object is passed in by reference for the second
     64     # argument on these routines, and its needed to determine the

GEOSException: Invalid string pointer returned by GEOS C function ""GEOSWKBWriter_write_r""
}}}
}}}

The cause of this problem is that empty points couldn't be represented in WKB.
There are similar crashes in the other places. I'm not sure if individual tickets should be created or all fixes should be done within the bounds of this ticket.
"	Bug	closed	GIS	1.8	Normal	fixed			Ready for checkin	1	0	0	0	0	0