Kernel crash on incorrect TableauSymmetry

[kschoebel]

The following (admittedly incorrect) command crashes the kernel: T_{i j k}::TableauSymmetry( shape={2,1}, indices={0,1,2,3} ); It should result in an error on incompatible number of boxes and indices.

[kpeeters]

Once all the features I wanted for 2.x are in I will have a closer look at some of the (very) old code which is responsible for this.