Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Development mailing list

From: Lisandro Dalcin (dalcinl_at_[hidden])
Date: 2007-07-25 10:52:07

On 7/23/07, Jeff Squyres <jsquyres_at_[hidden]> wrote:
> I think that this will require a little tomfoolery to fix properly
> because we can't simply return NULL (you can't expect to use the
> pointer that we return to store anything, but you should be able to
> expect to be able to dereference it without seg faulting).

Excellent! As reference, MPICH2 seems to return different pointers for
size=0, but perhaps this happens because it falls to use system
malloc, and in my box this always return different, non-null pointers.

Lisandro Dalcín
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
PTLC - Güemes 3450, (3000) Santa Fe, Argentina
Tel/Fax: +54-(0)342-451.1594