Running ConvertToMD on a MARI nxspe file results in a segfault

[Ian Bush]

To reproduce:

1. Convert MARI file, such as MAR11001.raw to NXSPE, e.g. using MariReduction.py in Mantid/scripts/test.
2. Try to use ConvertMD, e.g. using example shown here ​http://docs.mantidproject.org/nightly/algorithms/ConvertToMD-v1.html#usage-examples
3. This results in a segfault. By doing - gdb python - then running the script shows the segfault occurs at:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff4be208c in Mantid::Kernel::Matrix<double>::lubksb(int const*, double*) () from /opt/Mantid/lib/libMantidKernel.so

[Alex Buts]

Can not reproduce this bug. May be this is system dependent bug?

Tried on windows 7

The script below works completely fine both with QDimensions='|Q|' and with QDimensions='Q3D' (and CopyToMD though its unclear what it means)

# Load Operation (disabled in test code)
ws=Load(Filename='MAR11001.nxspe',OutputWorkspace='MAR11001')
# Simulates Load of the workspace above #################
#redWS = CreateSimulationWorkspace(Instrument='MAR',BinParams=[-10,1,10],UnitX='DeltaE',OutputWorkspace='MAR11001')
AddSampleLog(ws,LogName='Ei',LogText='12.',LogType='Number');
# Do fine rebinning, which accounts for poligon intersections
# copy to new MD workspace
ws=ConvertToMD(InputWorkspace=ws,OutputWorkspace='MD3',QDimensions='|Q|',MinValues='-10,-10,-10,-2',MaxValues='10,10,10,10',SplitInto='50',MaxRecursionDepth=1)

[Nick Draper]

Somehow these slipped through without a resolution. Set to Fixed.

[Stuart Campbell]

This ticket has been transferred to github issue ​11734