add comment for magic value

[simgrid.git] / teshsuite / smpi / mpich3-test / f77 / rma / addsize.h

diff --git a/teshsuite/smpi/mpich3-test/f77/rma/addsize.h b/teshsuite/smpi/mpich3-test/f77/rma/addsize.h
index f5010a4..300e81f 100644 (file)
--- a/teshsuite/smpi/mpich3-test/f77/rma/addsize.h
+++ b/teshsuite/smpi/mpich3-test/f77/rma/addsize.h
@@ -3,4 +3,9 @@ C
 C  (C) 2003 by Argonne National Laboratory.
 C      See COPYRIGHT in top-level directory.
 C
+C     SimGrid comment :
+C     This file holds a value which should have the same size as an MPI_Aint
+C     that can hold any pointer. In f90 it's a integer (kind=MPI_ADDRESS_KIND)
+C     Original mpich testsuite uses autconf to configure the right size to use
+C     Integer is not right on some systems, we set it to integer*8 by default
       integer*8 asize