[postgis-tickets] [PostGIS] #2956: ST_AsTWKB(NULL) crashes the backend

[PostGIS]

#2956: ST_AsTWKB(NULL) crashes the backend
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 Reporter:  strk     |       Owner:  nicklas      
     Type:  defect   |      Status:  new          
 Priority:  blocker  |   Milestone:  PostGIS 2.2.0
Component:  postgis  |     Version:  trunk        
 Keywords:           |  
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Comment(by nicklas):

 Actually I just removed strict a few days ago because I used null as
 default value for id:

 {{{
 CREATE OR REPLACE FUNCTION ST_AsTWKB(geometry,int4,int8 default
 null,boolean default false, boolean default false)
 }}}

 Maybe that is a bad solution. The reason is that it is not supposed to be
 any default value. If id is not declared the twkb-geometry is created
 without any space for id. Since id can be 0 that is not possible to use as
 default. Any other ideas to do it the cleanest way?
 Or is it the best way to go to catch the null value in the C-function like
 in strks patch?

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2956#comment:5>
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