osc/pt2pt: silence valgrind warnings

explicitly add and initialize padding to keep valgrind happy

Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>

ompi/mca/osc/pt2pt/osc_pt2pt_frag.h

@@ -3,6 +3,8 @@
  * Copyright (c) 2012      Sandia National Laboratories.  All rights reserved.
  * Copyright (c) 2014-2017 Los Alamos National Security, LLC. All rights
  *                         reserved.
+ * Copyright (c) 2018      Research Organization for Information Science
+ *                         and Technology (RIST). All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -91,11 +93,18 @@ static inline ompi_osc_pt2pt_frag_t *ompi_osc_pt2pt_frag_alloc_non_buffered (omp
 
     curr->header->base.type = OMPI_OSC_PT2PT_HDR_TYPE_FRAG;
     curr->header->base.flags = OMPI_OSC_PT2PT_HDR_FLAG_VALID;
+#if OPAL_ENABLE_DEBUG
+    curr->header->padding[0] = 0;
+    curr->header->padding[1] = 0;
+#endif
     if (module->passive_target_access_epoch) {
         curr->header->base.flags |= OMPI_OSC_PT2PT_HDR_FLAG_PASSIVE_TARGET;
     }
     curr->header->source = ompi_comm_rank(module->comm);
     curr->header->num_ops = 1;
+#if OPAL_ENABLE_DEBUG
+    curr->header->pad = 0;
+#endif
 
     return curr;
 }

ompi/mca/osc/pt2pt/osc_pt2pt_header.h

@@ -13,7 +13,7 @@
  * Copyright (c) 2010      Cisco Systems, Inc.  All rights reserved.
  * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved.
  * Copyright (c) 2012-2013 Sandia National Laboratories.  All rights reserved.
- * Copyright (c) 2015      Research Organization for Information Science
+ * Copyright (c) 2015-2018 Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
  * $COPYRIGHT$
  *
@@ -133,6 +133,9 @@ typedef struct ompi_osc_pt2pt_header_lock_t ompi_osc_pt2pt_header_lock_t;
 
 struct ompi_osc_pt2pt_header_lock_ack_t {
     ompi_osc_pt2pt_header_base_t base;
+#if OPAL_ENABLE_HETEROGENEOUS_SUPPORT
+    uint8_t padding[2];
+#endif
     uint32_t source;
     uint64_t lock_ptr;
 };
@@ -179,6 +182,9 @@ typedef struct ompi_osc_pt2pt_header_flush_ack_t ompi_osc_pt2pt_header_flush_ack
 
 struct ompi_osc_pt2pt_frag_header_t {
     ompi_osc_pt2pt_header_base_t base;
+#if OPAL_ENABLE_HETEROGENEOUS_SUPPORT || OPAL_ENABLE_DEBUG
+    uint8_t padding[2];
+#endif
     uint32_t source; /* rank in window of source process */
     opal_atomic_int32_t num_ops; /* number of operations in this buffer */
     uint32_t pad; /* ensure the fragment header is a multiple of 8 bytes */