st_union() in some queries produces segfaults and/or ERROR: array size exceeds the maximum allowed (134217727)
|Reported by:||mgleahy||Owned by:||pramsey|
As indicated in the subject, in some circumstances the st_union() function would result in either a segfault or a trapped error that would be reported as
ERROR: array size exceeds the maximum allowed (134217727)
Investigation that concluded on the users mailing list (http://postgis.refractions.net/pipermail/postgis-users/2010-March/026245.html) indicates that this is due to "some memory management changes which required changes to array_agg() and which had some risk of causing problems for other sites with similar coding"
The patch attached appears to fix this.