[postgis-users] ST_AsSVG crashes with large/complex geometries
Mike Leahy
mgleahy at alumni.uwaterloo.ca
Thu Feb 19 05:32:04 PST 2009
Hello list,
I'm wondering if anyone has run into issues with st_assvg locking up
postgresql. I have an application that generates svg from unioned sets
of geometries. So far it has been working pretty well, except I just
tested it with very large sets of geometries, and it invariably locks up
the backend database without any errors etc. I could send a sample
geometry if that would help, but I think this can probably be done with
any dataset. I've verified that the problem is not with st_union, as it
outputs a geometry just fine...it's only when it gets to st_assvg does
it freeze things...there is no CPU activity. I do see this in the pg_log:
*** glibc detected *** postgres: postgres testdb [local] SELECT:
realloc(): invalid next size: 0x000000000220f410 ***
Am I just expecting too much of the st_assvg function, or is this
something that might be fixable?
Thanks for any advice,
Mike
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