Crash when workspace deleted after closing 3D plot

[Martyn Gigg]

To reproduce:

• load MAR11060.raw from systemtests/Data (actual dataset doesn't really matter);
• double click on the workspace to bring up the matrix;
• click on the 3D Plot menu and select "3D Polygons";
• after the graph shows up close just the graph;
• delete the workspace;
• now repeat these instructions and Mantid will crash.

[Martyn Gigg]

Unsubscribe MantidMatrixFunction observers on object destruction.

Poco does not do this automatically and if they are left in the observers list then the next notification is dispatched and tries to be handled by a deleted object. Refs #8867

Changeset: 5c9a47646913e2249fc47df7dd435ab1ebdef13a

[Martyn Gigg]

Branch: bugfix/8867_crash_ws_delete_3dplot

Tester: At a minimum ensure that the steps above no longer crash Mantid. It will also be worth checking that all of the other 3D plot types in the menu don't have the same problem.

[Karl Palmen]

Works with the MAR11001.raw file found in AutoTestData.

[Martyn Gigg]

Unsubscribe MantidMatrixFunction observers on object destruction.

Poco does not do this automatically and if they are left in the observers list then the next notification is dispatched and tries to be handled by a deleted object. Refs #8867

Changeset: fab6d57ed5060bbabf1be89a8845e3398bd86934

[Karl Palmen]

Merge remote-tracking branch 'origin/bugfix/8867_crash_ws_delete_3dplot'

Full changeset: ​1b9fccadafbba5d1d43491994d896e120a452de0

[Stuart Campbell]

This ticket has been transferred to github issue ​9711