On 04/22/2014 04:04 AM, Lisandro Dalcin wrote:

The MPI-3 standard says (pp.354, lines 39-40):

""" If MPI_ERROR_STRING is called when no string has been set, it will return a empty string (all spaces in Fortran, "" in C). """

The following simple tests segfaults. A quick fix would be to return an empty string in MPIR_Err_get_dynerr_string() (file dynerrutil.c), e.g:

Makes sense to me, but maybe Pavan has an issue with buffering? ==rob -- Rob Latham Mathematics and Computer Science Division Argonne National Lab, IL USA