That is true. But we do not have too many objects that keep references to La objects. We probably need to list these and either add a similar hack or consider storing them using shared_ptrs, which they are not by today. And again it will introduce a quite large revamp of the interface to introduce that.
-- You received this bug notification because you are a member of DOLFIN Team, which is subscribed to DOLFIN. https://bugs.launchpad.net/bugs/702372 Title: BlockMatrix and deleted matrices Status in DOLFIN: New Bug description: The following code crashes, unless "del A" is commented out. I don't know the memory handling strategy in dolfin, (boost::shared_ptr is used in some places, but not consistently?) but attached is a patch which at least removes the crash by making private copies of the matrices (and vectors in BlockVectors). from dolfin import * mesh = UnitSquare(4, 4) V = FunctionSpace(mesh, "CG", 1) u,v = TrialFunction(V), TestFunction(V) a = u*v*dx AA = BlockMatrix(1,1) A = assemble(a) AA[0, 0] = A del A print AA[0,0] _______________________________________________ Mailing list: https://launchpad.net/~dolfin Post to : dolfin@lists.launchpad.net Unsubscribe : https://launchpad.net/~dolfin More help : https://help.launchpad.net/ListHelp
