ffc team mailing list archive

["Marie E. Rognes" <meg@xxxxxxxxx>]

On 11/20/2011 07:29 PM, Garth N. Wells wrote:
> I'm trying to track down a bug that leads to a silent failure. I'm as
> far as a call to the FFC function
>
>     ffc.tensor.estimate_cost
>
> which fails to return. This function is called from the function
>
>      ffc.analysis._auto_select_representation
>
> What I don't get is why it's even being called. Since the code that
> I'm running is:
>
>     from dolfin import *
>     mesh = UnitSquare(32, 32)
>     V = FunctionSpace(mesh, "Lagrange", 1)
>     print "------------- end"
>
> It's only a FunctionSpace, so why is FFC going through code that is
> for analysing forms?


Because of the use of a dummy form for generating function
spaces, see def jit_element(...) in ffc/jitcompiler.py.

This has already resurfaced recently, cf

    https://bugs.launchpad.net/dolfin/+bug/884670


--
Marie