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>

5 files changed, 0 insertions, 29 deletions

diff --git a/libglusterfs/src/call-stub.c b/libglusterfs/src/call-stub.c
index 67543c64a..8761b40a0 100644
--- a/libglusterfs/src/call-stub.c
+++ b/libglusterfs/src/call-stub.c
@@ -3822,12 +3822,8 @@ call_stub_destroy_unwind (call_stub_t *stub)
 void
 call_stub_destroy (call_stub_t *stub)
 {
-        struct mem_pool *tmp_pool = NULL;
-
         GF_VALIDATE_OR_GOTO ("call-stub", stub, out);
 
-        tmp_pool = stub->stub_mem_pool;
-
         if (stub->wind) {
                 call_stub_destroy_wind (stub);
         } else {
@@ -3837,8 +3833,6 @@ call_stub_destroy (call_stub_t *stub)
         stub->stub_mem_pool = NULL;
         mem_put (stub);
 out:
-        tmp_pool = NULL;
-
         return;
 }
 
diff --git a/libglusterfs/src/fd.c b/libglusterfs/src/fd.c
index d6c4806a1..7779dfe25 100644
--- a/libglusterfs/src/fd.c
+++ b/libglusterfs/src/fd.c
@@ -383,7 +383,6 @@ fd_destroy (fd_t *fd)
         xlator_t    *xl = NULL;
         int          i = 0;
         xlator_t    *old_THIS = NULL;
-        struct mem_pool *tmp_pool = NULL;
 
         if (fd == NULL){
                 gf_log_callingfn ("xlator", GF_LOG_ERROR, "invalid arugument");
@@ -397,8 +396,6 @@ fd_destroy (fd_t *fd)
         if (!fd->_ctx)
                 goto out;
 
-        tmp_pool = fd->inode->table->fd_mem_pool;
-
         if (IA_ISDIR (fd->inode->ia_type)) {
                 for (i = 0; i < fd->xl_count; i++) {
                         if (fd->_ctx[i].key) {
@@ -429,7 +426,6 @@ fd_destroy (fd_t *fd)
         inode_unref (fd->inode);
         fd->inode = (inode_t *)0xaaaaaaaa;
         mem_put (fd);
-        tmp_pool = NULL;
 out:
         return;
 }
diff --git a/libglusterfs/src/graph.c b/libglusterfs/src/graph.c
index 1d7d943e6..7844a5475 100644
--- a/libglusterfs/src/graph.c
+++ b/libglusterfs/src/graph.c
@@ -283,7 +283,6 @@ gf_add_cmdline_options (glusterfs_graph_t *graph, cmd_args_t *cmd_args)
 int
 glusterfs_graph_validate_options (glusterfs_graph_t *graph)
 {
-        volume_opt_list_t  *vol_opt = NULL;
         xlator_t           *trav = NULL;
         int                 ret = -1;
         char               *errstr = NULL;
@@ -294,9 +293,6 @@ glusterfs_graph_validate_options (glusterfs_graph_t *graph)
                 if (list_empty (&trav->volume_options))
                         continue;
 
-                vol_opt = list_entry (trav->volume_options.next,
-                                      volume_opt_list_t, list);
-
                 ret = xlator_options_validate (trav, trav->options, &errstr);
                 if (ret) {
                         gf_log (trav->name, GF_LOG_ERROR,
diff --git a/libglusterfs/src/graph.y b/libglusterfs/src/graph.y
index 10aa4546b..62c57dd6c 100644
--- a/libglusterfs/src/graph.y
+++ b/libglusterfs/src/graph.y
@@ -445,8 +445,6 @@ preprocess (FILE *srcfp, FILE *dstfp)
         char    in_backtick = 0;
 	int     line = 1;
         int     column = 0;
-        int     backtick_line = 0;
-        int     backtick_column = 0;
         int     character = 0;
 
 
@@ -484,9 +482,6 @@ preprocess (FILE *srcfp, FILE *dstfp)
 			} else {
 				i = 0;
 				cmd[i] = '\0';
-
-				backtick_column = column;
-				backtick_line = line;
 			}
 
 			in_backtick = !in_backtick;
diff --git a/libglusterfs/src/inode.c b/libglusterfs/src/inode.c
index 1b4320311..7f9382367 100644
--- a/libglusterfs/src/inode.c
+++ b/libglusterfs/src/inode.c
@@ -134,14 +134,11 @@ __dentry_unhash (dentry_t *dentry)
 static void
 __dentry_unset (dentry_t *dentry)
 {
-        struct mem_pool *tmp_pool = NULL;
-
         if (!dentry) {
                 gf_log_callingfn (THIS->name, GF_LOG_WARNING, "dentry not found");
                 return;
         }
 
-        tmp_pool = dentry->inode->table->dentry_pool;
         __dentry_unhash (dentry);
 
         list_del_init (&dentry->inode_list);
@@ -155,8 +152,6 @@ __dentry_unset (dentry_t *dentry)
         }
 
         mem_put (dentry);
-        tmp_pool = NULL;
-
 }
 
 
@@ -307,7 +302,6 @@ __inode_destroy (inode_t *inode)
         int          index = 0;
         xlator_t    *xl = NULL;
         xlator_t    *old_THIS = NULL;
-        struct mem_pool *tmp_pool = NULL;
 
         if (!inode) {
                 gf_log_callingfn (THIS->name, GF_LOG_WARNING, "inode not found");
@@ -319,8 +313,6 @@ __inode_destroy (inode_t *inode)
                 goto noctx;
         }
 
-        tmp_pool = inode->table->inode_pool;
-
         for (index = 0; index < inode->table->xl->graph->xl_count; index++) {
                 if (inode->_ctx[index].xl_key) {
                         xl = (xlator_t *)(long)inode->_ctx[index].xl_key;
@@ -337,8 +329,6 @@ noctx:
         LOCK_DESTROY (&inode->lock);
         //  memset (inode, 0xb, sizeof (*inode));
         mem_put (inode);
-        tmp_pool = NULL;
-
 }