[postgis-devel] [PostGIS] #627: PostGIS/PostgreSQL process terminates on invalid geometry

[PostGIS]

#627: PostGIS/PostgreSQL process terminates on invalid geometry
-------------------------+--------------------------------------------------
 Reporter:  hopfgartner  |       Owner:  pramsey      
     Type:  defect       |      Status:  new          
 Priority:  medium       |   Milestone:  PostGIS 1.5.3
Component:  postgis      |     Version:  1.5.X        
 Keywords:               |  
-------------------------+--------------------------------------------------

Comment(by hopfgartner):

 I've tried to dig into this issue and added some debug info to
 postgis-1.5.1/postgis/lwgeom_geos.c, see attached file.
 When I run the query above, I get the following output:

 melzo=# SELECT
 buffer('0101000020E8640000000000000000F8FF000000000000F8FF', 50.0);
 NOTICE:  [lwgparse.c:parse_it:1669] parse_it:
 0101000020E8640000000000000000F8FF000000000000F8FF with parser flags 7
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgparse.c:alloc_lwgeom:343] alloc_lwgeom -1
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgparse.c:alloc_wkb:1658] alloc_wkb
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgparse.c:parse_wkb:1539] parse_wkb
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgparse.c:alloc_stack_tuple:432] alloc_stack_tuple: type = 1,
 size = 1
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgparse.c:alloc_stack_tuple:443] alloc_stack_tuple complete:
 0x1c2212a0
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgparse.c:check_dims:926] check_dims the_geom.ndims = 2, num =
 2
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgparse.c:pop:913] pop: type= 1, tuple= 0x1c2212a0
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgparse.c:make_serialized_lwgeom:1274] make_serialized_lwgeom
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom.c:serialized_lwgeom_from_ewkt:704]
 serialized_lwgeom_from_ewkt with
 0101000020E8640000000000000000F8FF000000000000F8FF
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom_api.c:lwgeom_getType:853] lwgeom_getType 65
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom.c:lwgeom_deserialize:26] lwgeom_deserialize got 1 - Point
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwpoint.c:lwpoint_deserialize:255] lwpoint_deserialize called
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom_api.c:lwgeom_getType:853] lwgeom_getType 65
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwpoint.c:lwpoint_deserialize:286] lwpoint_deserialize: input
 has SRID
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom_api.c:pointArray_construct:788] pointArray_construct
 called.
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom_api.c:pointArray_construct:798] pointArray_construct
 returning 0x1c1ddc38
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom.c:lwgeom_serialize_size:67] lwgeom_serialize_size(Point)
 called
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwpoint.c:lwpoint_serialize_size:147] lwpoint_serialize_size
 called
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwpoint.c:lwpoint_serialize_size:154] lwpoint_serialize_size
 returning 21
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom_pg.c:pglwgeom_serialize:159] lwgeom_serialize_size
 returned 21
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom.c:lwgeom_serialize_buf:101] lwgeom_serialize_buf called
 with a Point
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom_api.c:pointArray_ptsize:811] pointArray_ptsize:
 TYPE_NDIMS(pa->dims)=2
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwpoint.c:lwpoint_serialize_buf:58]
 lwpoint_serialize_buf(0x1c21b650, 0x1c21b624) called
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom_api.c:pointArray_ptsize:811] pointArray_ptsize:
 TYPE_NDIMS(pa->dims)=2
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom_pg.c:pglwgeom_serialize:165] pglwgeom_serialize:
 serialized size: 21, computed size: 21
 LINE 1: SELECT buffer('0101000020E8640000000000000000F8FF00000000000...
                       ^
 NOTICE:  [lwgeom_api.c:lwgeom_getType:853] lwgeom_getType 65
 NOTICE:  [lwgeom.c:lwgeom_deserialize:26] lwgeom_deserialize got 1 - Point
 NOTICE:  [lwpoint.c:lwpoint_deserialize:255] lwpoint_deserialize called
 NOTICE:  [lwgeom_api.c:lwgeom_getType:853] lwgeom_getType 65
 NOTICE:  [lwpoint.c:lwpoint_deserialize:286] lwpoint_deserialize: input
 has SRID
 NOTICE:  [lwgeom_api.c:pointArray_construct:788] pointArray_construct
 called.
 NOTICE:  [lwgeom_api.c:pointArray_construct:798] pointArray_construct
 returning 0x1c225348
 NOTICE:  [lwgeom_geos.c:LWGEOM2GEOS:2936] LWGEOM2GEOS got a Unknown
 NOTICE:  [lwsegmentize.c:has_arc:55] has_arc called.
 NOTICE:  [lwgeom_api.c:lwgeom_getType:853] lwgeom_getType 65
 NOTICE:  [lwgeom_api.c:getPoint3dz_p:582] getPoint3dz_p called on array of
 2-dimensions / 1 pts
 NOTICE:  [lwgeom_api.c:pointArray_ptsize:811] pointArray_ptsize:
 TYPE_NDIMS(pa->dims)=2
 NOTICE:  [lwgeom_geos.c:ptarray_to_GEOSCoordSeq:2912] Point: nan,nan,0
 NOTICE:  [lwgeom_geos.c:LWGEOM2GEOS:3026] LWGEOM2GEOS: GEOSGeom: POINT
 (nan nan)
 NOTICE:  [lwgeom_geos.c:buffer:988] before GEOSBufferWithStyle(POINT (nan
 nan), 50.000000, 8, 1, 1, 5.000000)
 server closed the connection unexpectedly
         This probably means the server terminated abnormally
         before or while processing the request.
 The connection to the server was lost. Attempting reset: Failed.
 !>


 The problem seems to be in GEOS or how GEOSBufferWithStyle is invoked from
 within PostGIS.

 Peter

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/627#comment:1>
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