Eliminate many "var set but not used" warnings with newer gcc.

This fixes ~200 such warnings, but leaves three categories untouched.

(1) Rpcgen code.

(2) Macros which set variables in the outer (calling function) scope.

(3) Variables which are set via function calls which may have side effects.

Change-Id: I6554555f78ed26134251504b038da7e94adacbcd
BUG: 2550
Reviewed-on: http://review.gluster.com/371
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>

2 files changed, 2 insertions, 27 deletions

diff --git a/rpc/rpc-lib/src/rpc-clnt.c b/rpc/rpc-lib/src/rpc-clnt.c
index acc4b0e571b..b09f47ed3e8 100644
--- a/rpc/rpc-lib/src/rpc-clnt.c
+++ b/rpc/rpc-lib/src/rpc-clnt.c
@@ -310,7 +310,6 @@ saved_frames_unwind (struct saved_frames *saved_frames)
 {
 	struct saved_frame   *trav = NULL;
 	struct saved_frame   *tmp = NULL;
-        struct mem_pool      *saved_frames_pool = NULL;
         struct tm            *frame_sent_tm = NULL;
         char                 timestr[256] = {0,};
 
@@ -341,8 +340,6 @@ saved_frames_unwind (struct saved_frames *saved_frames)
                 trav->rpcreq->rpc_status = -1;
                 trav->rpcreq->cbkfn (trav->rpcreq, &iov, 1, trav->frame);
 
-                saved_frames_pool
-                        = trav->rpcreq->conn->rpc_clnt->saved_frames_pool;
                 rpc_clnt_reply_deinit (trav->rpcreq,
                                        trav->rpcreq->conn->rpc_clnt->reqpool);
 
diff --git a/rpc/rpc-transport/rdma/src/rdma.c b/rpc/rpc-transport/rdma/src/rdma.c
index e881484600d..b88b884d590 100644
--- a/rpc/rpc-transport/rdma/src/rdma.c
+++ b/rpc/rpc-transport/rdma/src/rdma.c
@@ -491,8 +491,6 @@ __rdma_create_read_chunks (rdma_peer_t *peer, rdma_ioq_t *entry,
                            rdma_request_context_t *request_ctx)
 {
         int32_t            ret      = -1;
-        rdma_device_t     *device   = NULL;
-        rdma_private_t    *priv     = NULL;
         int                pos      = 0;
 
         GF_VALIDATE_OR_GOTO (RDMA_LOG_NAME, peer, out);
@@ -501,9 +499,6 @@ __rdma_create_read_chunks (rdma_peer_t *peer, rdma_ioq_t *entry,
         GF_VALIDATE_OR_GOTO (RDMA_LOG_NAME, *ptr, out);
         GF_VALIDATE_OR_GOTO (RDMA_LOG_NAME, request_ctx, out);
 
-        priv = peer->trans->private;
-        device = priv->device;
-
         request_ctx->iobref = iobref_ref (entry->iobref);
 
         if (type == rdma_areadch) {
@@ -1013,7 +1008,7 @@ __rdma_ioq_churn_request (rdma_peer_t *peer, rdma_ioq_t *entry,
         }
 
         if ((wtype != rdma_noch) || (rtype != rdma_noch)) {
-                request_ctx = mem_get (priv->device->request_ctx_pool);
+                request_ctx = mem_get (device->request_ctx_pool);
                 if (request_ctx == NULL) {
                         ret = -1;
                         goto out;
@@ -1021,7 +1016,7 @@ __rdma_ioq_churn_request (rdma_peer_t *peer, rdma_ioq_t *entry,
 
                 memset (request_ctx, 0, sizeof (*request_ctx));
 
-                request_ctx->pool = priv->device->request_ctx_pool;
+                request_ctx->pool = device->request_ctx_pool;
                 request_ctx->peer = peer;
 
                 entry->msg.request.rpc_req->conn_private = request_ctx;
@@ -1156,11 +1151,6 @@ __rdma_send_reply_inline (rdma_peer_t *peer, rdma_ioq_t *entry,
         rdma_header_t  *header    = NULL;
         int32_t         send_size = 0, ret = 0;
         char           *buf       = NULL;
-        rdma_private_t *priv      = NULL;
-        rdma_device_t  *device    = NULL;
-
-        priv = peer->trans->private;
-        device = priv->device;
 
         send_size = iov_length (entry->rpchdr, entry->rpchdr_count)
                 + iov_length (entry->proghdr, entry->proghdr_count)
@@ -1440,14 +1430,9 @@ __rdma_send_reply_type_nomsg (rdma_peer_t *peer, rdma_ioq_t *entry,
         char               *buf          = NULL;
         uint32_t            payload_size = 0;
         int                 count        = 0, i = 0;
-        rdma_private_t     *priv         = NULL;
-        rdma_device_t      *device       = NULL;
         int32_t             ret          = 0;
         struct iovec        vector[MAX_IOVEC];
 
-        priv = peer->trans->private;
-        device = priv->device;
-
         header = (rdma_header_t *)post->buf;
 
         __rdma_fill_reply_header (header, entry->rpchdr, reply_info,
@@ -1512,11 +1497,6 @@ __rdma_send_reply_type_msg (rdma_peer_t *peer, rdma_ioq_t *entry,
         int32_t             send_size    = 0, ret = 0;
         char               *ptr          = NULL;
         uint32_t            payload_size = 0;
-        rdma_private_t     *priv         = NULL;
-        rdma_device_t      *device       = NULL;
-
-        priv = peer->trans->private;
-        device = priv->device;
 
         send_size = iov_length (entry->rpchdr, entry->rpchdr_count)
                 + iov_length (entry->proghdr, entry->proghdr_count)
@@ -4327,7 +4307,6 @@ static int
 rdma_handshake_pollerr (rpc_transport_t *this)
 {
         rdma_private_t *priv = this->private;
-        int32_t ret = 0;
         char need_unref = 0, connected = 0;
 
         gf_log (RDMA_LOG_NAME, GF_LOG_DEBUG,
@@ -4348,7 +4327,6 @@ rdma_handshake_pollerr (rpc_transport_t *this)
                                 gf_log (RDMA_LOG_NAME, GF_LOG_ERROR,
                                         "close () - error: %s",
                                         strerror (errno));
-                                ret = -errno;
                         }
                         priv->tcp_connected = priv->connected = 0;
                         priv->sock = -1;