[raster] crash if gdal_data env variable not in place on windows 64

[robe]

I was doing a spatial query with ST_Clip and I neglected to put in the GDAL_DATA environment variable before hand.

The query crashed the service and logs show this:

ERROR 4: Unable to open EPSG support file gcs.csv.

Try setting the GDAL_DATA environment variable to point to the

directory containing EPSG csv files.

2012-04-07 08:03:57 EST LOG:  server process (PID 3144) was terminated by exception 0xC0000005

After registering the variable things work fine — so might be one of those null character issues similar to what we had with null proj4text strings.

This is on a windows 2008 R2 64-bit running 64-bit PostgreSQL/PostGIS

[dustymugs]

Freaky. The error message is emitted by GDAL. I'll have to do some digging to see if we can check that GDAL is able to find its data and then throw an error if not able to do so.

[dustymugs]

I don't think this is something we can readily resolve other than mentioning that GDAL_DATA may need to be set in the docs.

[dustymugs]

Can you try r9967 for 2.0? It may prevent the crash. I don't know why the crash is occurring as I just dug through the GDAL code that accesses gsc.csv and don't see any crashers.

[robe]

I suspect its probably a similar thing to the issue we had a while back with windows crashing with empty string proj4texts. I'll give a try when I get up.

[robe]

I can't get it to crash anymore on my 2.0.1 r9979 and the postgis_full_version() reads

POSTGIS="2.0.1 r9979" GEOS="3.4.0dev-CAPI-1.8.0 r0" PROJ="Rel. 4.8.0, 6 March 2012" GDAL="GDAL 1.9.1, released 2012/05/15 GDAL_DATA not found" LIBXML="2.7.8" LIBJSON="UNKNOWN" RASTER

So I think you fixed in 2.0.1