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[Dag Lindbo <dag@xxxxxxxxxx>]

Hello Dolfin!

I'm getting a strange abort:
Error: DofMap has been re-ordered. Cannot return signature string.

This minimal example takes a user/constant Function and projects it to a
discrete funciton:

// Begin crash example ---------------------------------------------
#include <dolfin.h>
#include "Restrict.h"

using namespace dolfin;

void restrict_to_FE_space(Function& f, Function& f_discr, Mesh& mesh)
{
  RestrictBilinearForm a;
  RestrictLinearForm L(f);
  LinearPDE proj(a,L,mesh);
  proj.solve(f_discr);
}

int main(void)
{
  UnitSquare mesh(16,16);
  Function f(mesh,1.0);
  Function g;

  restrict_to_FE_space(f,g,mesh);

  File file("g.xml");
  file << g;

  return 0;
}
// end crash example --------------------------------------------------

The abort occurs when the function is to be written to disk. In the
context where I originally encountered this, I use the the function
restrict_to_FE_space to set initial values for a function which occurs
in a form. The subsequent call to the assembler cases a segmentation
violation (!)

Note that if the code from the function restrict_to_FE_space is pasted
into main, everything works as expected. This makes me think that this
could be a bug.


The Restrict form is simply u*v*dx = f*v*dx:
# begin form ----------------------------------------

element = FiniteElement("Lagrange", "triangle", 1)
v = TestFunction(element)
u = TrialFunction(element)
f = Function(element)
a = u*v*dx
L = f*v*dx

# end form ------------------------------------------


Any thoughts?
/Dag

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