[petsc-users] Changing the diagonal of a matrix via a vector

[Jed Brown]

On Wed, Apr 27, 2011 at 18:41, Xiangdong Liang <xdliang at gmail.com> wrote:

> Thanks a lot, Jed. I am using Petsc's built-in function, VecCreate and
> MatCreate. they are supposed to return PetscErrorCode. However, I still get
> "warning: return makes pointer from integer without a cast" for these
> built-in functions.


There is a "return" inside the CHKERRQ macro. You either need to make *your*
function return PetscErrorCode or use a different checking macro (e.g.
CHKERRABORT).
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