[postgis-tickets] [PostGIS] #4165: ST_AsText hangs backend

[PostGIS]

#4165: ST_AsText hangs backend
-----------------------+---------------------------
  Reporter:  komzpa    |      Owner:  pramsey
      Type:  defect    |     Status:  new
  Priority:  critical  |  Milestone:  PostGIS 2.5.0
 Component:  postgis   |    Version:  trunk
Resolution:            |   Keywords:
-----------------------+---------------------------

Comment (by pramsey):

 It looks like the assertion (why?) in lwprint_double() is causing a fault
 (at least for me in OSX). I'm not sure why we want to stop in the case
 that the requested size is larger than the buffer... snprintf has nicely
 avoided over-writing the ends of the buffer. I guess because we do want to
 support arbitrarily large precisions in double output? In that case
 Algunenano's suggestion to increase input buffer size to match requested
 precision size makes sense (at the expense of allocation, so things will
 get slower (unless we do the trick of only allocating on the heap when the
 request is > MAXBUFFERSIZE)

-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/4165#comment:4>
PostGIS <http://trac.osgeo.org/postgis/>
The PostGIS Trac is used for bug, enhancement & task tracking, a user and developer wiki, and a view into the subversion code repository of PostGIS project.