Crash in "chooseRepresentation" method of "DcmDataset"?

[faisal_tum]

My program crashes in the following piece of code

Code: Select all

if(xfer == 12 || xfer == 11 || xfer == 24 || xfer == 19 || xfer == 20 || xfer == 21 || xfer == 22 || xfer == 23 || xfer == 25 || xfer == 26 || xfer == 30)
{
    DJ_RPLossless params;
    compressing = dataset->chooseRepresentation(xfer, &params);
    if(compressing != EC_Normal)
    {
        cout<<"Something wrong with compressing!\n";
    }
}
// Still compression methods 28, 29, 31, 32, 33 not covered. Potential bug exists.
else if(xfer == 4 || xfer == 5 || xfer == 6 || xfer == 7 || xfer == 8 || xfer == 9 || xfer == 10 || xfer == 13 || xfer == 14 || xfer == 15 || xfer == 16 || xfer == 17 || xfer == 18 || xfer == 27)
{
    DJ_RPLossy params;
    compressing = dataset->chooseRepresentation(xfer, &params);
    if(compressing != EC_Normal)
    {
        cout<<"Something wrong with compressing!\n";
    }
}

The crash doesn't always happen. It suddenly happens sometimes and is inconsistent.

An image of the stack is given to show which files might be related.


Error pops in the

dicoptx.h

file in the following piece code at line 560



FYI I'm making a GUI combining Qt and DCMTK. Almost everything is now fine except this occasional crash. Could you please give a hint what could be the problem? Thanks.

[J. Riesmeier]

Did you check whether the memory is exhausted? It seems that the call to "new T[Count]" failed and, therefore, throwed an exception that isn't caught...

[J. Riesmeier]

I just committed a patch that should make sure that in such a case (new[] fails), no exception is thrown.

[faisal_tum]

I just committed a patch that should make sure that in such a case (new[] fails), no exception is thrown.

Thanks. Is there any trick or method to optimize when using DCMTK where I can lessen Memory Exhaustion?

[J. Riesmeier]

The answer depends on your use case, i.e. what you want to do. Using chooseRepresentation() compresses/decompresses the complete dataset, which might consume more main memory than your system has.