Roy's going to have to chime in here on the decision, but it looks like the cached System reference is private in DiffContext, so FEMContext can't access it. I'd be in favor of moving it to protected.

On Mon, Jun 17, 2013 at 1:33 AM, David Knezevic <> wrote:
Random question: why does FEMContext::pre_fe_reinit take a System&
argument when DiffContext already stores a reference to the system?

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