[DebianGIS-dev] Bug#545270: SDreaddata () fails on an amd64 system

[Ivan Shmakov]

Package: libhdf4g
Version: 4.1r4-22
Severity: grave

	[Hopefully not a false positive.]

	Apparently, SDreaddata () is broken on amd64.  Consider, e. g.:

$ ncdump-hdf -h \
      e4ftl01u.ecs.nasa.gov/MODIS_Composites/MOTA/MCD43B3.005/2006.08.29/MCD43B3.A2006241.h23v03.005.2008108002817.hdf | head 
netcdf MCD43B3.A2006241.h23v03.005.2008108002817 {
dimensions:
	YDim_MOD_Grid_BRDF = 1200 ;
	XDim_MOD_Grid_BRDF = 1200 ;

variables:
	short Albedo_BSA_Band1(YDim_MOD_Grid_BRDF, XDim_MOD_Grid_BRDF) ;
		Albedo_BSA_Band1:long_name = "Albedo_BSA_Band1" ;
		Albedo_BSA_Band1:units = "albedo, no units" ;
		Albedo_BSA_Band1:valid_range = 0s, 32766s ;
$ hdp dumpsds -d \
      -n Albedo_BSA_Band1 \
      e4ftl01u.ecs.nasa.gov/MODIS_Composites/MOTA/MCD43B3.005/2006.08.29/MCD43B3.A2006241.h23v03.005.2008108002817.hdf 

HDP ERROR>>> in sdsdumpfull: SDreaddata failed for sds_id(262144).

HDP ERROR>>> in printSD_ASCII: sdsdumpfull failed for 0'th SDS.
HDP ERROR>>> in dsd: printSD_ASCII failed for file e4ftl01u.ecs.nasa.gov/MODIS_Composites/MOTA/MCD43B3.005/2006.08.29/MCD43B3.A2006241.h23v03.005.2008108002817.hdf
$ 

	It looks like that the ncvarget () interface still works:

$ hdfdump -T \
      e4ftl01u.ecs.nasa.gov/MODIS_Composites/MOTA/MCD43B3.005/2006.08.29/MCD43B3.A2006241.h23v03.005.2008108002817.hdf \
      Albedo_BSA_Band1 | head 
0.062
0.06
0.057
0.059
0.056
0.052
0.051
0.05
0.05
0.054
$ 

	The file used in the example could be downloaded (24.9 MiB)
	using anonymous FTP, like:

$ wget ftp://e4ftl01u.ecs.nasa.gov/MODIS_Composites/MOTA/MCD43B3.005/2006.08.29/MCD43B3.A2006241.h23v03.005.2008108002817.hdf 

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