> Line 807 of fe_system.cc is an instance of this.

Uh, in the code, we have
      const Subscriptor* quadrature_base_pointer = &quadrature;
         ...
          Assert (dynamic_cast<const Quadrature<dim>*>
                    (quadrature_base_pointer) != 0, 
                  ExcInternalError());
          cell_quadrature
            = static_cast<const Quadrature<dim>*>
               (quadrature_base_pointer);

So quadrature_base_pointer is a Subscriptor*. The assert checks that it 
really is a pointer to the Subscriptor base class of Quadrature, and after 
so checking we use the static case to get the Quadrature. What do you 
suggest to do here?


> This is the same 
> problem Pietro had an a previous mail.

I seem to suffer from amnesia -- can you point me to his mail in which he 
had this problem?

Best
 W.

-------------------------------------------------------------------------
Wolfgang Bangerth                email:            [email protected]
                                 www: http://www.math.tamu.edu/~bangerth/

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