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ZLIB_UNCOMPRESS limited to 4GB? [message #89979]

Mon, 12 January 2015 12:03

markb77
Messages: 217
Registered: July 2006

Senior Member

hi,

I am trying to access data that is stored in a zlib compressed format in a set of existing files. The data size in some of the files is > 4GB.

For the smaller files, I can use ZLIB_UNCOMPRESS to access the data successfully. However, when I try ZLIB_UNCOMPRESS on the larger datasets, IDL crashes hard (the program just closes).

I've tested ZLIB_COMPRESS with large datasets, and this throws an error when the input data is > 4GB.

So, are both of these routines limited to 4GB data? If so, why?

IDL Version 8.3, Microsoft Windows (Win32 x86_64 m64). (c) 2013, Exelis Visual Information Solutions, Inc.

My machine has 32GB of RAM... and I have also tested this on IDL 8.4

Any ideas on how to decompress this data in IDL?

thanks
Mark

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[Message index]

		ZLIB_UNCOMPRESS limited to 4GB? By: markb77 on Mon, 12 January 2015 12:03
		Re: ZLIB_UNCOMPRESS limited to 4GB? By: markb77 on Wed, 25 March 2015 07:20
		Re: ZLIB_UNCOMPRESS limited to 4GB? By: Heinz Stege on Wed, 25 March 2015 09:52
		Re: ZLIB_UNCOMPRESS limited to 4GB? By: markb77 on Thu, 26 March 2015 05:07

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