Re: [Libmesh-devel] Bug when coarsening with CONSTANT MONOMIAL variables

[Roy S. <roy...@ic...>]

On Wed, 13 Sep 2006, Tim Kr=F6ger wrote:

> It seems to me that there is a bug that causes libMesh to crash when I =
use=20
> CONSTANT MONOMIAL variables and then coarsen my grid.
>
> Please see the attached test program.  The test program creates a grid =
with=20
> one cell, adds a system and a CONSTANT MONOMIAL variable, then
> refines the grid, and finally coarsens again.
>
> The crash seems to appear somewhere in System::project_vector().

You're right; there was a bug in that code path in that function.
I've committed the fix to CVS.  Nice bug report, by the way; if only
they all included a minimal demonstration program!

The fixed library no longer crashes, of course, but you may want to
double-check for accuracy.  We don't have any regression tests beyond
"Roy's app looks okay in the eyeball norm" on this function when it's
called with non-Lagrange elements.
---
Roy