Give some headroom for adding new MPI error codes without breaking ABI

ompi/include/mpi.h.in

@@ -13,7 +13,8 @@
  * Copyright (c) 2008-2009 Sun Microsystems, Inc.  All rights reserved.
  * Copyright (c) 2009-2012 Oak Rigde National Laboratory.  All rights reserved.
  * Copyright (c) 2011      Sandia National Laboratories. All rights reserved.
- * Copyright (c) 2012-2014 Los Alamos Nat Security, LLC. All rights reserved.
+ * Copyright (c) 2012-2015 Los Alamos National Security, LLC. All rights
+ *                         reserved.
  * Copyright (c) 2011-2013 INRIA.  All rights reserved.
  * $COPYRIGHT$
  *
@@ -605,9 +606,9 @@ enum {
 #define MPI_T_ERR_INVALID             72
 
 /* Per MPI-3 p349 47, MPI_ERR_LASTCODE must be >= the last predefined
-   MPI_ERR_<foo> code.  So just set it equal to the last code --
-   MPI_T_ERR_INVALID, in this case. */
-#define MPI_ERR_LASTCODE              MPI_T_ERR_INVALID
+   MPI_ERR_<foo> code. Set the last code to allow some room for adding
+   error codes without breaking ABI. */
+#define MPI_ERR_LASTCODE              92
 
 #define MPI_ERR_SYSRESOURCE          -2
 

ompi/include/mpif-values.pl

@@ -326,7 +326,7 @@ $constants->{MPI_ERR_RMA_ATTACH} = 69;
 $constants->{MPI_ERR_RMA_FLAVOR} = 70;
 $constants->{MPI_ERR_RMA_SHARED} = 71;
 $constants->{MPI_T_ERR_INVALID} = 72;
-$constants->{MPI_ERR_LASTCODE} = $constants->{MPI_T_ERR_INVALID};
+$constants->{MPI_ERR_LASTCODE} = 92;
 
 $constants->{MPI_ERR_SYSRESOURCE} = -2;