[Libmesh-devel] Empty Systems?

[Derek G. <der...@in...>]

Is there anything inherently wrong with creating a System and not  
adding any variables to it?  I currently do this in my application and  
it works fine in optimized mode... but in debug it trips an assert on  
lin 654 of dof_map.C.

The trouble is that my application might or might not put anything  
into that System depending on what the user specifies in their input  
file.... and unfortunately I don't allow that system to not exist in  
many places throughout the code (it doesn't have to have anything in  
it... it just can't be NULL).

I'm wondering if that's an old assert or if having empty Systems is  
really a bad idea...

Thanks,
Derek