b449c750b7
Patch from Gilles Gouaillardet on #4506 to correctly handle 0-sized messages in coll/basic MPI_Alltoallv and MPI_Alltoallw. Reviewed by Jeff Squyres. Fixes trac:4506. cmr=v1.8.2:reviewer=ompi-rm1.8 This commit was SVN r31519. The following Trac tickets were found above: Ticket 4506 --> https://svn.open-mpi.org/trac/ompi/ticket/4506