Crash with pointer to Property in Python

[Martyn Gigg]

The attached minimal script crashes Mantid on completion, presumably when the Python session is being tidied up and there's still a pointer around to a log value (time series) from a temporary Workspace that has since been deleted.

(The print and time.sleep() statements are just to see what it's doing and when)

Resetting the pointer variable to something else before the script exits (but even after the DeleteWorkspace) seems to be a work around, as is not deleting the temporary workspace...

James. (Mantid 2.5.3)

import time
fn="//hifi/data/hifi00054050.nxs" # any file might do
time.sleep(1.0)
print "loading..."
ws=LoadMuonNexus(fn,OutputWorkspace="DarkCountsTmp")[0]
print "loaded."
time.sleep(1.0)
print "getting pointer to log"
gf=ws.getRun().getLogData("Beamlog_Good_Frames_Total")
time.sleep(1.0)
print "final log value in Good Frames was ",gf.value[-1]," at ",gf.times[-1]
time.sleep(1.0)
print "deleting..."
# "work around" by un-commenting the line below
# gf=0 # clear out the pointer in advance
DeleteWorkspace(ws)
print "deleted."
time.sleep(1.0)
print "finished."
time.sleep(1.0)

[Nick Draper]

Moved to backlog at the code freeze for R2.6

[Nick Draper]

Bulk move to assigned at the introduction of the triage step

[Stuart Campbell]

This ticket has been transferred to github issue ​8253