DcmFileFormat saveFile crash

[mesajflaviu]

I am struggling to save dcm file from DcmDataset to file to disk.
How I try that:

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DcmFileFormat FileFormat;
FileFormat.saveFile(strFilePath, pDS->getOriginalXfer());

where pDS is the dataset. The dataset is retrieved from a PACS server an has 1.8 GB files as dcm multiframe. But at some point, I get the following error:

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Access violation writing location 0x00000000

and the debugger lead me here:

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//dcelem.cc, line 115
        memcpy(fValue, elem.fValue, size_t(getLengthField() + pad));

I am using 3.6.0 version of DCMTK. What could be the problem ? And how to solve it ?

Thank you in advance !

[Michael Onken]

Hi,

can you see what is pointing to NULL, the variable fValue?

Are you on a 32 bit system? Did you change the transfer syntax of the file in memory (e.g. decompressed it)? Has there been any error or warning output on the logger, anything special on DEBUG log level? Do dcmdump and dcmconv work on the file?

Best,
Michael

[mesajflaviu]

can you see what is pointing to NULL, the variable fValue?

Yes, the fValues has NULL value.

Are you on a 32 bit system?

No, I am running on 64 bit system.

Did you change the transfer syntax of the file in memory

Not at all.

Has there been any error or warning output on the logger, anything special on DEBUG log level?

No, I didn't noticed.

Do dcmdump and dcmconv work on the file

How can I try that ? Because the files are on PACS server, and the error occur when I am trying to retrieve dcm files on local disk ...

Kindly thank you !

[Michael Onken]

Hi,

can you try receiving with storescp? In case you can try option --bit-preserving. If you can receive successfully, then try dcmdump <file> and dcmconv <file> <output_file_name>.

Best,
Michael

[mesajflaviu]

Thank you for all your support. I have found the problem: the (old) reading code had tried to convert dataset into dcmfileformat, and then this dcmfileformat read the file ... and doing that, I have that crashing. Once as I read the file with the original dataset, everything seem to be alright.

[Michael Onken]

You're welcome, enjoy DCMTK