diff --git a/src/mpi/romio/adio/ad_daos/ad_daos_open.c b/src/mpi/romio/adio/ad_daos/ad_daos_open.c
index f493713a87e..1833e400aa0 100644
--- a/src/mpi/romio/adio/ad_daos/ad_daos_open.c
+++ b/src/mpi/romio/adio/ad_daos/ad_daos_open.c
@@ -105,7 +105,7 @@ static int share_cont_info(struct ADIO_DAOS_cont *cont, int rank, MPI_Comm comm)
     uint64_t total_size;
     daos_size_t buf_size;
 #if CHECK_DAOS_API_VERSION(1, 4)
-    daos_size_t pool_len, cont_len;
+    daos_size_t pool_len = 0, cont_len = 0;
 #else
     daos_size_t pool_len = 37, cont_len = 37;
 #endif
diff --git a/src/mpi/romio/adio/ad_gpfs/ad_gpfs_wrcoll.c b/src/mpi/romio/adio/ad_gpfs/ad_gpfs_wrcoll.c
index d65dea409d4..7bfa1996d07 100644
--- a/src/mpi/romio/adio/ad_gpfs/ad_gpfs_wrcoll.c
+++ b/src/mpi/romio/adio/ad_gpfs/ad_gpfs_wrcoll.c
@@ -111,7 +111,7 @@ void ADIOI_GPFS_WriteStridedColl(ADIO_File fd, const void *buf, MPI_Aint count,
     ADIO_Offset *offset_list = NULL, *st_offsets = NULL, *fd_start = NULL,
         *fd_end = NULL, *end_offsets = NULL;
     ADIO_Offset *gpfs_offsets0 = NULL, *gpfs_offsets = NULL;
-    ADIO_Offset *count_sizes;
+    ADIO_Offset *count_sizes = NULL;
     int ii;
 
     MPI_Aint *buf_idx = NULL;
diff --git a/src/mpi/romio/adio/ad_lustre/ad_lustre_wrcoll.c b/src/mpi/romio/adio/ad_lustre/ad_lustre_wrcoll.c
index c808f3e73ab..98a07a67340 100644
--- a/src/mpi/romio/adio/ad_lustre/ad_lustre_wrcoll.c
+++ b/src/mpi/romio/adio/ad_lustre/ad_lustre_wrcoll.c
@@ -1304,7 +1304,7 @@ static void ADIOI_LUSTRE_IterateOneSided(ADIO_File fd, const void *buf, int *str
                                                &(offset_list[startingOffsetListIndex]),
                                                &(len_list[startingOffsetListIndex]),
                                                segmentContigAccessCount,
-                                               buf + totalDataWrittenLastRound, datatype,
+                                               (char *) buf + totalDataWrittenLastRound, datatype,
                                                error_code, segmentFirstFileOffset,
                                                segmentLastFileOffset, currentValidDataIndex,
                                                segment_stripe_start, segment_stripe_end,
diff --git a/src/mpi/romio/adio/common/ad_fstype.c b/src/mpi/romio/adio/common/ad_fstype.c
index 7b6217c4dbe..fda9450cabb 100644
--- a/src/mpi/romio/adio/common/ad_fstype.c
+++ b/src/mpi/romio/adio/common/ad_fstype.c
@@ -42,6 +42,9 @@
 #endif
 
 #ifdef ROMIO_DAOS
+#include <daos_prop.h>  // daos_cont_layout_t and daos_pro_t
+#include <daos_obj_class.h>     // daos_oclass_id_t
+#include <daos_cont.h>  // DAOS_CONT_HINT_MAX_LEN
 #include <daos_uns.h>
 #endif
 
diff --git a/src/mpl/src/gpu/mpl_gpu_ze.c b/src/mpl/src/gpu/mpl_gpu_ze.c
index a92824645f6..e3b717744e6 100644
--- a/src/mpl/src/gpu/mpl_gpu_ze.c
+++ b/src/mpl/src/gpu/mpl_gpu_ze.c
@@ -1607,7 +1607,7 @@ static int update_lru_mapped_order(void *ipc_buf, int dev_id)
         }
 
         /* Add to the map for constant access during reorder */
-        MPL_ze_ipc_lru_map_t *map_entry =
+        map_entry =
             (MPL_ze_ipc_lru_map_t *) MPL_calloc(1, sizeof(MPL_ze_ipc_lru_map_t), MPL_MEM_OTHER);
         if (map_entry == NULL) {
             mpl_err = MPL_ERR_GPU_NOMEM;