diff --git a/ompi/mca/crcp/bkmrk/crcp_bkmrk_pml.c b/ompi/mca/crcp/bkmrk/crcp_bkmrk_pml.c
index e2d2ab3d77..5453ea19f9 100644
--- a/ompi/mca/crcp/bkmrk/crcp_bkmrk_pml.c
+++ b/ompi/mca/crcp/bkmrk/crcp_bkmrk_pml.c
@@ -4,6 +4,7 @@
  * Copyright (c) 2010      The University of Tennessee and The University
  *                         of Tennessee Research Foundation.  All rights
  *                         reserved.
+ * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -5178,7 +5179,7 @@ static int coord_request_wait( ompi_request_t * req,
         status->MPI_TAG    = req->req_status.MPI_TAG;
         status->MPI_SOURCE = req->req_status.MPI_SOURCE;
         status->_cancelled = req->req_status._cancelled;
-        status->_ucount    = req->req_status._ucount;
+        OMPI_STATUS_SET_COUNT(&status->_ucount, &req->req_status._ucount);
     }
 
     return OMPI_SUCCESS;
diff --git a/ompi/mca/mtl/mx/mtl_mx_probe.c b/ompi/mca/mtl/mx/mtl_mx_probe.c
index 5353233528..93105d5ea4 100644
--- a/ompi/mca/mtl/mx/mtl_mx_probe.c
+++ b/ompi/mca/mtl/mx/mtl_mx_probe.c
@@ -11,6 +11,7 @@
  *                         All rights reserved.
  * Copyright (c) 2006-2007 Los Alamos National Security, LLC.  All rights
  *                         reserved.
+ * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  *
  * Additional copyrights may follow
  *
@@ -61,7 +62,7 @@ ompi_mtl_mx_iprobe(struct mca_mtl_base_module_t* mtl,
         if(MPI_STATUS_IGNORE != status) { 
             MX_GET_SRC(mx_status.match_info, status->MPI_SOURCE);
             MX_GET_TAG(mx_status.match_info, status->MPI_TAG); 
-            status->_ucount = mx_status.msg_length;
+            OMPI_STATUS_SET_COUNT(&status->_ucount, &mx_status.msg_length);
         }
         *flag = 1;
     } else {
diff --git a/ompi/mca/pml/bfo/pml_bfo_iprobe.c b/ompi/mca/pml/bfo/pml_bfo_iprobe.c
index 70a931927e..58738952a1 100644
--- a/ompi/mca/pml/bfo/pml_bfo_iprobe.c
+++ b/ompi/mca/pml/bfo/pml_bfo_iprobe.c
@@ -39,7 +39,7 @@ int mca_pml_bfo_iprobe(int src,
 
     if( recvreq.req_recv.req_base.req_ompi.req_complete == true ) {
         if( NULL != status ) {
-            *status = recvreq.req_recv.req_base.req_ompi.req_status;
+            OMPI_STATUS_SET(status, &recvreq.req_recv.req_base.req_ompi.req_status);
         }
         *matched = 1;
     } else {
@@ -68,7 +68,7 @@ int mca_pml_bfo_probe(int src,
     ompi_request_wait_completion(&recvreq.req_recv.req_base.req_ompi);
 
     if (NULL != status) {
-        *status = recvreq.req_recv.req_base.req_ompi.req_status;
+        OMPI_STATUS_SET(status, &recvreq.req_recv.req_base.req_ompi.req_status);
     }
     MCA_PML_BASE_RECV_REQUEST_FINI( &recvreq.req_recv );
     return OMPI_SUCCESS;
diff --git a/ompi/mca/pml/bfo/pml_bfo_irecv.c b/ompi/mca/pml/bfo/pml_bfo_irecv.c
index 62bdf78794..cd461078c3 100644
--- a/ompi/mca/pml/bfo/pml_bfo_irecv.c
+++ b/ompi/mca/pml/bfo/pml_bfo_irecv.c
@@ -105,7 +105,7 @@ int mca_pml_bfo_recv(void *addr,
     ompi_request_wait_completion(&recvreq->req_recv.req_base.req_ompi);
 
     if (NULL != status) {  /* return status */
-        *status = recvreq->req_recv.req_base.req_ompi.req_status;
+        OMPI_STATUS_SET(status, &recvreq->req_recv.req_base.req_ompi.req_status);
     }
     rc = recvreq->req_recv.req_base.req_ompi.req_status.MPI_ERROR;
     ompi_request_free( (ompi_request_t**)&recvreq );
diff --git a/ompi/mca/pml/cm/pml_cm_recv.c b/ompi/mca/pml/cm/pml_cm_recv.c
index 9f5813f430..9907755d60 100644
--- a/ompi/mca/pml/cm/pml_cm_recv.c
+++ b/ompi/mca/pml/cm/pml_cm_recv.c
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004-2006 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -114,7 +115,7 @@ mca_pml_cm_recv(void *addr,
     ompi_request_wait_completion(&recvreq->req_base.req_ompi);
 
     if (NULL != status) {  /* return status */
-        *status = recvreq->req_base.req_ompi.req_status;
+        OMPI_STATUS_SET(status, &recvreq->req_base.req_ompi.req_status);
     }
     ret = recvreq->req_base.req_ompi.req_status.MPI_ERROR;
     ompi_request_free( (ompi_request_t**)&recvreq );
diff --git a/ompi/mca/pml/csum/pml_csum_iprobe.c b/ompi/mca/pml/csum/pml_csum_iprobe.c
index 0ad995a103..f8d004200f 100644
--- a/ompi/mca/pml/csum/pml_csum_iprobe.c
+++ b/ompi/mca/pml/csum/pml_csum_iprobe.c
@@ -9,7 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
- * Copyright (c) 2009      Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2009-2010 Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -39,7 +39,7 @@ int mca_pml_csum_iprobe(int src,
 
     if( recvreq.req_recv.req_base.req_ompi.req_complete == true ) {
         if( NULL != status ) {
-            *status = recvreq.req_recv.req_base.req_ompi.req_status;
+            OMPI_STATUS_SET(status, &recvreq.req_recv.req_base.req_ompi.req_status);
         }
         *matched = 1;
     } else {
@@ -68,7 +68,7 @@ int mca_pml_csum_probe(int src,
     ompi_request_wait_completion(&recvreq.req_recv.req_base.req_ompi);
 
     if (NULL != status) {
-        *status = recvreq.req_recv.req_base.req_ompi.req_status;
+        OMPI_STATUS_SET(status, &recvreq.req_recv.req_base.req_ompi.req_status);
     }
     MCA_PML_BASE_RECV_REQUEST_FINI( &recvreq.req_recv );
     return OMPI_SUCCESS;
diff --git a/ompi/mca/pml/csum/pml_csum_irecv.c b/ompi/mca/pml/csum/pml_csum_irecv.c
index 417da9053f..89b5e0a61f 100644
--- a/ompi/mca/pml/csum/pml_csum_irecv.c
+++ b/ompi/mca/pml/csum/pml_csum_irecv.c
@@ -11,6 +11,7 @@
  *                         All rights reserved.
  * Copyright (c) 2007      Los Alamos National Security, LLC.  All rights
  *                         reserved. 
+ * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -104,7 +105,7 @@ int mca_pml_csum_recv(void *addr,
     ompi_request_wait_completion(&recvreq->req_recv.req_base.req_ompi);
 
     if (NULL != status) {  /* return status */
-        *status = recvreq->req_recv.req_base.req_ompi.req_status;
+        OMPI_STATUS_SET(status, &recvreq->req_recv.req_base.req_ompi.req_status);
     }
     rc = recvreq->req_recv.req_base.req_ompi.req_status.MPI_ERROR;
     ompi_request_free( (ompi_request_t**)&recvreq );
diff --git a/ompi/mca/pml/dr/pml_dr_iprobe.c b/ompi/mca/pml/dr/pml_dr_iprobe.c
index 019b592962..26017a1342 100644
--- a/ompi/mca/pml/dr/pml_dr_iprobe.c
+++ b/ompi/mca/pml/dr/pml_dr_iprobe.c
@@ -9,7 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2006 The Regents of the University of California.
  *                         All rights reserved.
- * Copyright (c) 2009      Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2009-2010 Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -39,7 +39,7 @@ int mca_pml_dr_iprobe(int src,
 
     if( recvreq.req_recv.req_base.req_ompi.req_complete == true ) {
         if( NULL != status ) {
-            *status = recvreq.req_recv.req_base.req_ompi.req_status;
+            OMPI_STATUS_SET(status, &recvreq.req_recv.req_base.req_ompi.req_status);
         }
         *matched = 1;
     } else {
@@ -68,7 +68,7 @@ int mca_pml_dr_probe(int src,
     ompi_request_wait_completion(&recvreq.req_recv.req_base.req_ompi);
 
     if (NULL != status) {
-        *status = recvreq.req_recv.req_base.req_ompi.req_status;
+        OMPI_STATUS_SET(status, &recvreq.req_recv.req_base.req_ompi.req_status);
     }
     MCA_PML_BASE_RECV_REQUEST_FINI( &recvreq.req_recv );
     return OMPI_SUCCESS;
diff --git a/ompi/mca/pml/dr/pml_dr_irecv.c b/ompi/mca/pml/dr/pml_dr_irecv.c
index 8dd8c57f4c..78f734aa3c 100644
--- a/ompi/mca/pml/dr/pml_dr_irecv.c
+++ b/ompi/mca/pml/dr/pml_dr_irecv.c
@@ -9,6 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2006 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -90,7 +91,7 @@ int mca_pml_dr_recv(void *addr,
     ompi_request_wait_completion(&recvreq->req_recv.req_base.req_ompi);
 
     if (NULL != status) {  /* return status */
-        *status = recvreq->req_recv.req_base.req_ompi.req_status;
+        OMPI_STATUS_SET(status, &recvreq->req_recv.req_base.req_ompi.req_status);
     }
     rc = recvreq->req_recv.req_base.req_ompi.req_status.MPI_ERROR;
     ompi_request_free( (ompi_request_t**)&recvreq );
diff --git a/ompi/mca/pml/ob1/pml_ob1_iprobe.c b/ompi/mca/pml/ob1/pml_ob1_iprobe.c
index b2f1d69613..3bf0e27632 100644
--- a/ompi/mca/pml/ob1/pml_ob1_iprobe.c
+++ b/ompi/mca/pml/ob1/pml_ob1_iprobe.c
@@ -9,7 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
- * Copyright (c) 2009      Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2009-2010 Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -39,7 +39,7 @@ int mca_pml_ob1_iprobe(int src,
 
     if( recvreq.req_recv.req_base.req_ompi.req_complete == true ) {
         if( NULL != status ) {
-            *status = recvreq.req_recv.req_base.req_ompi.req_status;
+            OMPI_STATUS_SET(status, &recvreq.req_recv.req_base.req_ompi.req_status);
         }
         *matched = 1;
     } else {
@@ -68,7 +68,7 @@ int mca_pml_ob1_probe(int src,
     ompi_request_wait_completion(&recvreq.req_recv.req_base.req_ompi);
 
     if (NULL != status) {
-        *status = recvreq.req_recv.req_base.req_ompi.req_status;
+        OMPI_STATUS_SET(status, &recvreq.req_recv.req_base.req_ompi.req_status);
     }
     MCA_PML_BASE_RECV_REQUEST_FINI( &recvreq.req_recv );
     return OMPI_SUCCESS;
diff --git a/ompi/mca/pml/ob1/pml_ob1_irecv.c b/ompi/mca/pml/ob1/pml_ob1_irecv.c
index 4dc164b875..0da307f755 100644
--- a/ompi/mca/pml/ob1/pml_ob1_irecv.c
+++ b/ompi/mca/pml/ob1/pml_ob1_irecv.c
@@ -11,6 +11,7 @@
  *                         All rights reserved.
  * Copyright (c) 2007      Los Alamos National Security, LLC.  All rights
  *                         reserved. 
+ * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -104,7 +105,7 @@ int mca_pml_ob1_recv(void *addr,
     ompi_request_wait_completion(&recvreq->req_recv.req_base.req_ompi);
 
     if (NULL != status) {  /* return status */
-        *status = recvreq->req_recv.req_base.req_ompi.req_status;
+        OMPI_STATUS_SET(status, &recvreq->req_recv.req_base.req_ompi.req_status);
     }
     rc = recvreq->req_recv.req_base.req_ompi.req_status.MPI_ERROR;
     ompi_request_free( (ompi_request_t**)&recvreq );
diff --git a/ompi/mpi/c/sendrecv_replace.c b/ompi/mpi/c/sendrecv_replace.c
index f0500676fc..a828892dba 100644
--- a/ompi/mpi/c/sendrecv_replace.c
+++ b/ompi/mpi/c/sendrecv_replace.c
@@ -9,6 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -126,7 +127,7 @@ int MPI_Sendrecv_replace(void * buf, int count, MPI_Datatype datatype,
 
         /* return status to user */
         if(status != MPI_STATUS_IGNORE) {
-            *status = recv_status;
+            OMPI_STATUS_SET(status, &recv_status);
         }
 
         /* release resources */
diff --git a/ompi/request/req_test.c b/ompi/request/req_test.c
index 8601b16b74..408cd1102c 100644
--- a/ompi/request/req_test.c
+++ b/ompi/request/req_test.c
@@ -10,6 +10,7 @@
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
  * Copyright (c) 2006-2008 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -39,7 +40,7 @@ int ompi_request_default_test( ompi_request_t ** rptr,
     if( request->req_state == OMPI_REQUEST_INACTIVE ) {
         *completed = true;
         if (MPI_STATUS_IGNORE != status) {
-            *status = ompi_status_empty;
+            OMPI_STATUS_SET(status, &ompi_status_empty);
         }
         return OMPI_SUCCESS;
     }
@@ -54,14 +55,14 @@ int ompi_request_default_test( ompi_request_t ** rptr,
             ompi_grequest_invoke_query(request, &request->req_status);
             if (MPI_STATUS_IGNORE != status) {
                 int old_error = status->MPI_ERROR;
-                *status = request->req_status;
+                OMPI_STATUS_SET(status, &request->req_status);
                 status->MPI_ERROR = old_error;
             }
         } else if (MPI_STATUS_IGNORE != status) {
             /* Do *NOT* set a new value for status->MPI_ERROR here!
                See MPI-1.1 doc, sec 3.2.5, p.22 */
             int old_error = status->MPI_ERROR;
-            *status = request->req_status;
+            OMPI_STATUS_SET(status, &request->req_status);
             status->MPI_ERROR = old_error;
         }
         if( request->req_persistent ) {
@@ -129,14 +130,14 @@ int ompi_request_default_test_any(
                     /* Do *NOT* set a new value for status->MPI_ERROR
                        here!  See MPI-1.1 doc, sec 3.2.5, p.22 */
                     int old_error = status->MPI_ERROR;
-                    *status = request->req_status;
+                    OMPI_STATUS_SET(status, &request->req_status);
                     status->MPI_ERROR = old_error;
                 }
             } else if (MPI_STATUS_IGNORE != status) {
                 /* Do *NOT* set a new value for status->MPI_ERROR
                    here!  See MPI-1.1 doc, sec 3.2.5, p.22 */
                 int old_error = status->MPI_ERROR;
-                *status = request->req_status;
+                OMPI_STATUS_SET(status, &request->req_status);
                 status->MPI_ERROR = old_error;
             }
 
@@ -165,7 +166,7 @@ int ompi_request_default_test_any(
     } else {
         *completed = true;
         if (MPI_STATUS_IGNORE != status) {
-            *status = ompi_status_empty;
+            OMPI_STATUS_SET(status, &ompi_status_empty);
         }
     }
     return OMPI_SUCCESS;
@@ -217,13 +218,13 @@ int ompi_request_default_test_all(
              * Works also in the case of persistent request w/ MPI_PROC_NULL.
              */
             if( request->req_state == OMPI_REQUEST_INACTIVE ) {
-                statuses[i] = request->req_status;
+                OMPI_STATUS_SET(&statuses[i], &request->req_status);
                 continue;
             }
             if (OMPI_REQUEST_GEN == request->req_type) {
                 ompi_grequest_invoke_query(request, &request->req_status);
             }
-            statuses[i] = request->req_status;
+            OMPI_STATUS_SET(&statuses[i], &request->req_status);
             if( request->req_persistent ) {
                 request->req_state = OMPI_REQUEST_INACTIVE;
                 continue;
@@ -324,7 +325,7 @@ int ompi_request_default_test_some(
             if (OMPI_REQUEST_GEN == request->req_type) {
                 ompi_grequest_invoke_query(request, &request->req_status);
             }
-            statuses[i] = request->req_status;
+            OMPI_STATUS_SET(&statuses[i], &request->req_status);
         }
 
         if (MPI_SUCCESS != request->req_status.MPI_ERROR) {
diff --git a/ompi/request/req_wait.c b/ompi/request/req_wait.c
index e48b74ef02..44134a80d8 100644
--- a/ompi/request/req_wait.c
+++ b/ompi/request/req_wait.c
@@ -10,6 +10,7 @@
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
  * Copyright (c) 2006-2008 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -51,7 +52,7 @@ int ompi_request_default_wait(
            3.2.5, p.22 */
         status->MPI_TAG    = req->req_status.MPI_TAG;
         status->MPI_SOURCE = req->req_status.MPI_SOURCE;
-        status->_ucount    = req->req_status._ucount;
+        OMPI_STATUS_SET_COUNT(&status->_ucount, &req->req_status._ucount);
         status->_cancelled = req->req_status._cancelled;
     }
     if( req->req_persistent ) {
@@ -164,7 +165,7 @@ finished:
     if(num_requests_null_inactive == count) {
         *index = MPI_UNDEFINED;
         if (MPI_STATUS_IGNORE != status) {
-            *status = ompi_status_empty;
+            OMPI_STATUS_SET(status, &ompi_status_empty);
         }
     } else {
         assert( true == request->req_complete );
@@ -177,7 +178,7 @@ finished:
             /* Do *NOT* set status->MPI_ERROR here!  See MPI-1.1 doc,
                sec 3.2.5, p.22 */
             int old_error = status->MPI_ERROR;
-            *status = request->req_status;
+            OMPI_STATUS_SET(status, &request->req_status);
             status->MPI_ERROR = old_error;
         }
         rc = request->req_status.MPI_ERROR;
@@ -298,7 +299,7 @@ int ompi_request_default_wait_all( size_t count,
                 ompi_grequest_invoke_query(request, &request->req_status);
             }
 
-            statuses[i] = request->req_status;
+            OMPI_STATUS_SET(&statuses[i], &request->req_status);
 
             if( request->req_persistent ) {
                 request->req_state = OMPI_REQUEST_INACTIVE;
@@ -478,7 +479,7 @@ finished:
                 ompi_grequest_invoke_query(request, &request->req_status);
             }
             if (MPI_STATUSES_IGNORE != statuses) {
-                statuses[i] = request->req_status;
+                OMPI_STATUS_SET(&statuses[i], &request->req_status);
             }
 
             if (MPI_SUCCESS != request->req_status.MPI_ERROR) {
diff --git a/ompi/request/request.h b/ompi/request/request.h
index cea3e38058..50fa97e69f 100644
--- a/ompi/request/request.h
+++ b/ompi/request/request.h
@@ -11,7 +11,7 @@
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
  * Copyright (c) 2006      Cisco Systems, Inc.  All rights reserved.
- * Copyright (c) 2009      Sun Microsystems, Inc.  All rights reserved.
+ * Copyright (c) 2009-2010 Oracle and/or its affiliates.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -406,6 +406,34 @@ static inline int ompi_request_complete(ompi_request_t* request, bool with_signa
     return OMPI_SUCCESS;
 }
 
+/* In a 64-bit library with strict alignment requirements (like 64-bit
+ * SPARC), the _ucount field of a C status is a long and requires 8
+ * byte alignment.  Unfortunately a Fortran status is an array of 6
+ * integers which only requires 4 byte alignment.  When storing the
+ * length into a status we don't know whether it is a C or Fortran
+ * status.  Therefore, we just copy the entire status as an integer
+ * array to avoid any issues.  We supply one macro for doing the entire
+ * status and another for just the _ucount field.  As this is only an
+ * issue for 64-bit SPARC, we conditionalize the macros accordingly.
+ */
+#if defined(__sparc) && SIZEOF_SIZE_T == 8
+#define OMPI_STATUS_SET(outstat, instat)                                      \
+    do {                                                                      \
+        int _i;                                                               \
+        for(_i=0; _i<(int)(sizeof(ompi_status_public_t)/sizeof(int)); _i++) { \
+            ((int *)(outstat))[_i] = ((int *)(instat))[_i];                   \
+        }                                                                     \
+    } while(0)
+#define OMPI_STATUS_SET_COUNT(outcount, incount)        \
+    do {                                                 \
+        ((int *)(outcount))[0] = ((int *)(incount))[0];  \
+        ((int *)(outcount))[1] = ((int *)(incount))[1];  \
+    } while(0)
+#else
+#define OMPI_STATUS_SET(outstat, instat) (*(outstat) = *(instat))
+#define OMPI_STATUS_SET_COUNT(outcount, incount) (*(outcount) = *(incount))
+#endif
+
 END_C_DECLS
 
 #endif