diff --git a/src/client/messenger.h b/src/client/messenger.h
index 8c43552e..e296b7e1 100644
--- a/src/client/messenger.h
+++ b/src/client/messenger.h
@@ -167,7 +167,8 @@ protected:
     bool use_rdma = true;
     std::vector<std::string> osd_networks;
     std::string rdma_device;
-    uint64_t rdma_port_num = 1, rdma_gid_index = -1, rdma_mtu = 0;
+    uint64_t rdma_port_num = 1, rdma_mtu = 0;
+    int rdma_gid_index = -1;
     msgr_rdma_context_t *rdma_context = NULL;
     uint64_t rdma_max_sge = 0, rdma_max_send = 0, rdma_max_recv = 0;
     uint64_t rdma_max_msg = 0;
diff --git a/src/client/msgr_rdma.cpp b/src/client/msgr_rdma.cpp
index 5195e16b..6feeeef8 100644
--- a/src/client/msgr_rdma.cpp
+++ b/src/client/msgr_rdma.cpp
@@ -201,7 +201,7 @@ cleanup:
 }
 #endif
 
-msgr_rdma_context_t *msgr_rdma_context_t::create(std::vector<std::string> osd_networks, const char *ib_devname, uint8_t ib_port, uint8_t gid_index, uint32_t mtu, bool odp, int log_level)
+msgr_rdma_context_t *msgr_rdma_context_t::create(std::vector<std::string> osd_networks, const char *ib_devname, uint8_t ib_port, int gid_index, uint32_t mtu, bool odp, int log_level)
 {
     int res;
     ibv_device **dev_list = NULL;
@@ -601,7 +601,7 @@ static int try_send_rdma_copy(osd_client_t *cl, uint8_t *dst, int dst_len)
         iovec & iov = cl->send_list[rc->send_pos];
         uint32_t len = (uint32_t)(iov.iov_len-rc->send_buf_pos < dst_len
             ? iov.iov_len-rc->send_buf_pos : dst_len);
-        memcpy(dst, iov.iov_base+rc->send_buf_pos, len);
+        memcpy(dst, (uint8_t*)iov.iov_base+rc->send_buf_pos, len);
         dst += len;
         dst_len -= len;
         rc->send_buf_pos += len;
diff --git a/src/client/msgr_rdma.h b/src/client/msgr_rdma.h
index 4818982a..cfa3cdf7 100644
--- a/src/client/msgr_rdma.h
+++ b/src/client/msgr_rdma.h
@@ -36,7 +36,7 @@ struct msgr_rdma_context_t
     int max_cqe = 0;
     int used_max_cqe = 0;
 
-    static msgr_rdma_context_t *create(std::vector<std::string> osd_networks, const char *ib_devname, uint8_t ib_port, uint8_t gid_index, uint32_t mtu, bool odp, int log_level);
+    static msgr_rdma_context_t *create(std::vector<std::string> osd_networks, const char *ib_devname, uint8_t ib_port, int gid_index, uint32_t mtu, bool odp, int log_level);
     ~msgr_rdma_context_t();
 };
 
diff --git a/src/cmd/cli_dd.cpp b/src/cmd/cli_dd.cpp
index 6583eac3..ca7aa0f6 100644
--- a/src/cmd/cli_dd.cpp
+++ b/src/cmd/cli_dd.cpp
@@ -324,7 +324,7 @@ resume_2:
                 cluster_op_t *sync_op = new cluster_op_t;
                 sync_op->opcode = OSD_OP_SYNC;
                 parent->waiting++;
-                sync_op->callback = [this, parent](cluster_op_t *sync_op)
+                sync_op->callback = [parent](cluster_op_t *sync_op)
                 {
                     parent->waiting--;
                     delete sync_op;
@@ -539,7 +539,7 @@ struct cli_dd_t
                     in_eof = true;
             }
             ring_data_t *data = ((ring_data_t*)sqe->user_data);
-            data->iov = (iovec){ cur_read->buf + cur_read->len, cur_read->max - cur_read->len };
+            data->iov = (iovec){ (uint8_t*)cur_read->buf + cur_read->len, cur_read->max - cur_read->len };
             my_uring_prep_readv(sqe, iinfo.ifd, &data->iov, 1, iinfo.in_seekable ? iseek + cur_read->offset + cur_read->len : -1);
             in_waiting++;
             data->callback = [this, cur_read](ring_data_t *data)
@@ -672,7 +672,7 @@ struct cli_dd_t
                 return false;
             }
             ring_data_t *data = ((ring_data_t*)sqe->user_data);
-            data->iov = (iovec){ .iov_base = cur_read->buf+cur_read->len, .iov_len = cur_read->max-cur_read->len };
+            data->iov = (iovec){ .iov_base = (uint8_t*)cur_read->buf+cur_read->len, .iov_len = cur_read->max-cur_read->len };
             my_uring_prep_writev(sqe, oinfo.ofd, &data->iov, 1, oinfo.out_seekable ? cur_read->offset+cur_read->len+oseek : -1);
             out_waiting++;
             data->callback = [this, cur_read](ring_data_t *data)
diff --git a/src/kv/kv_cli.cpp b/src/kv/kv_cli.cpp
index ab4d3c91..fcfca5f3 100644
--- a/src/kv/kv_cli.cpp
+++ b/src/kv/kv_cli.cpp
@@ -546,7 +546,7 @@ void kv_cli_t::handle_cmd(const std::vector<std::string> & cmd, std::function<vo
             auto & key = cmd[1];
             if (opname == "get")
             {
-                db->get(key, [this, cb](int res, const std::string & value)
+                db->get(key, [cb](int res, const std::string & value)
                 {
                     if (res < 0)
                         fprintf(stderr, "Error: %s (code %d)\n", strerror(-res), res);
diff --git a/src/kv/kv_db.cpp b/src/kv/kv_db.cpp
index 57af47ad..8583ec10 100644
--- a/src/kv/kv_db.cpp
+++ b/src/kv/kv_db.cpp
@@ -1448,7 +1448,7 @@ void kv_op_t::update()
 
 void kv_op_t::update_find()
 {
-    get_block(db, cur_block, cur_level, recheck_policy, [=, checked_block = cur_block](int res, int refresh)
+    get_block(db, cur_block, cur_level, recheck_policy, [=](int res, int refresh)
     {
         res = handle_block(res, refresh, true);
         if (res == -EAGAIN)
diff --git a/src/nfs/nfs_kv.cpp b/src/nfs/nfs_kv.cpp
index 791ec2b1..44e4b155 100644
--- a/src/nfs/nfs_kv.cpp
+++ b/src/nfs/nfs_kv.cpp
@@ -119,7 +119,7 @@ std::string kv_direntry_filename(const std::string & key)
 std::string kv_inode_prefix_key(uint64_t ino, const char *prefix)
 {
     int max = 32+strlen(prefix);
-    char key[max] = { 0 };
+    char key[max];
     snprintf(key, max, "%s%x", prefix, INODE_POOL(ino));
     int n = strnlen(key, max-1);
     snprintf(key+n+1, max-n-1, "%jx", INODE_NO_POOL(ino));
diff --git a/src/nfs/nfs_kv_create.cpp b/src/nfs/nfs_kv_create.cpp
index c1a87a37..c4602d62 100644
--- a/src/nfs/nfs_kv_create.cpp
+++ b/src/nfs/nfs_kv_create.cpp
@@ -147,7 +147,7 @@ resume_2:
     {
         st->res = res;
         kv_continue_create(st, 3);
-    }, [st](int res, const std::string & value)
+    }, [](int res, const std::string & value)
     {
         return res == -ENOENT;
     });
diff --git a/src/nfs/nfs_kv_defrag.cpp b/src/nfs/nfs_kv_defrag.cpp
index d049dd6f..5912acd8 100644
--- a/src/nfs/nfs_kv_defrag.cpp
+++ b/src/nfs/nfs_kv_defrag.cpp
@@ -81,12 +81,12 @@ void kv_fs_defrag_t::read()
             empty = true;
             for (; bitmap_pos < bitmap_size; bitmap_pos += 8)
             {
-                if (*((uint64_t*)(op->bitmap_buf + bitmap_pos)))
+                if (*((uint64_t*)((uint8_t*)op->bitmap_buf + bitmap_pos)))
                     empty = false;
             }
             for (; bitmap_pos < bitmap_size; bitmap_pos++)
             {
-                if (*((uint8_t*)(op->bitmap_buf + bitmap_pos)))
+                if (*((uint8_t*)((uint8_t*)op->bitmap_buf + bitmap_pos)))
                     empty = false;
             }
             buf_pos = 0;
diff --git a/src/nfs/nfs_kv_link.cpp b/src/nfs/nfs_kv_link.cpp
index a44eb68e..93690951 100644
--- a/src/nfs/nfs_kv_link.cpp
+++ b/src/nfs/nfs_kv_link.cpp
@@ -81,7 +81,7 @@ resume_1:
         {
             st->res = res;
             nfs_kv_continue_link(st, 2);
-        }, [st](int res, const std::string & old_value)
+        }, [](int res, const std::string & old_value)
         {
             return res == -ENOENT;
         });
diff --git a/src/nfs/nfs_kv_read.cpp b/src/nfs/nfs_kv_read.cpp
index cf936ff9..16ee4d4e 100644
--- a/src/nfs/nfs_kv_read.cpp
+++ b/src/nfs/nfs_kv_read.cpp
@@ -107,7 +107,7 @@ resume_1:
                         st->op->offset+st->op->len - (read_offset+read_size));
                 }
             }
-            st->op->callback = [st, state](cluster_op_t *op)
+            st->op->callback = [st](cluster_op_t *op)
             {
                 st->res = op->retval == op->len ? 0 : op->retval;
                 delete op;
diff --git a/src/nfs/nfs_kv_remove.cpp b/src/nfs/nfs_kv_remove.cpp
index 17a2eee7..4344e16c 100644
--- a/src/nfs/nfs_kv_remove.cpp
+++ b/src/nfs/nfs_kv_remove.cpp
@@ -169,7 +169,7 @@ resume_4:
             {
                 st->res2 = res;
                 nfs_kv_continue_delete(st, 5);
-            }, [st](int res, const std::string & value)
+            }, [](int res, const std::string & value)
             {
                 return res == -ENOENT;
             });
diff --git a/src/nfs/nfs_proxy_rdma.cpp b/src/nfs/nfs_proxy_rdma.cpp
index 6b111e7b..2e07f1f0 100644
--- a/src/nfs/nfs_proxy_rdma.cpp
+++ b/src/nfs/nfs_proxy_rdma.cpp
@@ -520,7 +520,7 @@ void nfs_rdma_conn_t::rdma_encode_header(XDR *xdrs, rpc_op_t *rop, bool nomsg)
     else
     {
         // Copy chunks... it's a real shit
-        outrmsg.rdma_body.rdma_msg = {
+        outrmsg.rdma_body.rdma_msg = (rpc_rdma_header){
             .rdma_writes = rop->in_rdma_msg.rdma_body.rdma_msg.rdma_writes,
             .rdma_reply = rop->in_rdma_msg.rdma_body.rdma_msg.rdma_reply,
         };
@@ -667,7 +667,7 @@ chunk_error:
             assert(hdr_iov_count > 0);
             for (unsigned i = 0; i < hdr_iov_count; i++)
             {
-                memcpy(rop->buffer + pos, hdr_iov_list[i].iov_base, hdr_iov_list[i].iov_len);
+                memcpy((uint8_t*)rop->buffer + pos, hdr_iov_list[i].iov_base, hdr_iov_list[i].iov_len);
                 pos += hdr_iov_list[i].iov_len;
             }
             assert(pos == hdr_size);
@@ -675,7 +675,7 @@ chunk_error:
         }
         for (unsigned i = 0; i < iov_count; i++)
         {
-            memcpy(rop->buffer + pos, iov_list[i].iov_base, iov_list[i].iov_len);
+            memcpy((uint8_t*)rop->buffer + pos, iov_list[i].iov_base, iov_list[i].iov_len);
             pos += iov_list[i].iov_len;
         }
         // Include header size in msg_size now and then
@@ -690,11 +690,11 @@ chunk_error:
                 uint32_t len = (reply_chunk->target.target_val[i].length < msg_size-pos
                     ? reply_chunk->target.target_val[i].length : msg_size-pos);
                 sges[wr_pos] = {
-                    .addr = (uintptr_t)(rop->buffer + pos),
+                    .addr = (uintptr_t)((uint8_t*)rop->buffer + pos),
                     .length = len,
                     .lkey = buf_lkey,
                 };
-                wrs[wr_pos] = {
+                wrs[wr_pos] = (ibv_send_wr){
                     .wr_id = 4, // 4 is chunk write
                     .opcode = IBV_WR_RDMA_WRITE,
                     .wr = {
@@ -718,7 +718,7 @@ chunk_error:
                 .length = (uint32_t)chunk_iov->iov_len,
                 .lkey = rdma_malloc_get_lkey(conn_dev->alloc, chunk_iov->iov_base),
             };
-            wrs[wr_pos] = {
+            wrs[wr_pos] = (ibv_send_wr){
                 .wr_id = 4, // 4 is chunk write
                 .opcode = IBV_WR_RDMA_WRITE,
                 .wr = {
@@ -736,7 +736,7 @@ chunk_error:
             .length = (uint32_t)(reply_chunk ? hdr_size : msg_size),
             .lkey = buf_lkey,
         };
-        wrs[wr_pos] = {
+        wrs[wr_pos] = (ibv_send_wr){
             .wr_id = 2, // 2 is send
             .opcode = remote_invalidate && !reply_chunk && wr_chunk ? IBV_WR_SEND_WITH_INV : IBV_WR_SEND,
             .send_flags = IBV_SEND_SIGNALED,
@@ -1021,7 +1021,7 @@ int nfs_rdma_conn_t::post_chunk_reads(rpc_op_t *rop, bool push)
             .length = cur->entry.target.length,
             .lkey = buf_lkey,
         };
-        chunk_wr[i] = {
+        chunk_wr[i] = (ibv_send_wr){
             .wr_id = 3, // 3 is chunk read
             .next = (i == read_chunk_count-1 ? NULL : &chunk_wr[i+1]),
             .sg_list = &chunk_sge[i],