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, 0 insertions, 22 deletions

diff --git a/xlators/storage/posix/src/posix-helpers.c b/xlators/storage/posix/src/posix-helpers.c
index d14ff6b2a..5fe6edfd9 100644
--- a/xlators/storage/posix/src/posix-helpers.c
+++ b/xlators/storage/posix/src/posix-helpers.c
@@ -230,13 +230,10 @@ posix_fill_ino_from_gfid (xlator_t *this, struct iatt *buf)
 int
 posix_lstat_with_gfid (xlator_t *this, const char *path, struct iatt *stbuf_p)
 {
-        struct posix_private  *priv    = NULL;
         int                    ret     = 0;
         struct stat            lstatbuf = {0, };
         struct iatt            stbuf = {0, };
 
-        priv = this->private;
-
         ret = lstat (path, &lstatbuf);
         if (ret == -1)
                 goto out;
@@ -259,13 +256,10 @@ out:
 int
 posix_fstat_with_gfid (xlator_t *this, int fd, struct iatt *stbuf_p)
 {
-        struct posix_private  *priv    = NULL;
         int                    ret     = 0;
         struct stat            fstatbuf = {0, };
         struct iatt            stbuf = {0, };
 
-        priv = this->private;
-
         ret = fstat (fd, &fstatbuf);
         if (ret == -1)
                 goto out;
diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c
index f816128f4..49a874b6d 100644
--- a/xlators/storage/posix/src/posix.c
+++ b/xlators/storage/posix/src/posix.c
@@ -1837,7 +1837,6 @@ posix_open (call_frame_t *frame, xlator_t *this,
         int32_t               _fd          = -1;
         struct posix_fd      *pfd          = NULL;
         struct posix_private *priv         = NULL;
-        char                  was_present  = 1;
         gid_t                 gid          = 0;
         struct iatt           stbuf        = {0, };
 
@@ -1867,9 +1866,6 @@ posix_open (call_frame_t *frame, xlator_t *this,
                 flags |= O_DIRECT;
 
         op_ret = posix_lstat_with_gfid (this, real_path, &stbuf);
-        if ((op_ret == -1) && (errno == ENOENT)) {
-                was_present = 0;
-        }
 
         _fd = open (real_path, flags, 0);
         if (_fd == -1) {
@@ -1959,7 +1955,6 @@ posix_readv (call_frame_t *frame, xlator_t *this,
         struct iovec           vec        = {0,};
         struct posix_fd *      pfd        = NULL;
         struct iatt            stbuf      = {0,};
-        int                    align      = 1;
         int                    ret        = -1;
 
         VALIDATE_OR_GOTO (frame, out);
@@ -1985,10 +1980,6 @@ posix_readv (call_frame_t *frame, xlator_t *this,
                 goto out;
         }
 
-        if (pfd->flags & O_DIRECT) {
-                align = 4096;    /* align to page boundary */
-        }
-
         iobuf = iobuf_get2 (this->ctx->iobuf_pool, size);
         if (!iobuf) {
                 op_errno = ENOMEM;
@@ -2281,7 +2272,6 @@ posix_flush (call_frame_t *frame, xlator_t *this,
 {
         int32_t           op_ret   = -1;
         int32_t           op_errno = 0;
-        struct posix_fd * pfd      = NULL;
         int               ret      = -1;
         uint64_t          tmp_pfd  = 0;
 
@@ -2296,7 +2286,6 @@ posix_flush (call_frame_t *frame, xlator_t *this,
                         "pfd is NULL on fd=%p", fd);
                 goto out;
         }
-        pfd = (struct posix_fd *)(long)tmp_pfd;
 
         op_ret = 0;
 
@@ -2879,7 +2868,6 @@ posix_fsyncdir (call_frame_t *frame, xlator_t *this,
 {
         int32_t           op_ret   = -1;
         int32_t           op_errno = 0;
-        struct posix_fd * pfd      = NULL;
         int               ret      = -1;
         uint64_t          tmp_pfd  = 0;
 
@@ -2894,7 +2882,6 @@ posix_fsyncdir (call_frame_t *frame, xlator_t *this,
                         "pfd is NULL, fd=%p", fd);
                 goto out;
         }
-        pfd = (struct posix_fd *)(long)tmp_pfd;
 
         op_ret = 0;
 
@@ -3501,7 +3488,6 @@ posix_do_readdir (call_frame_t *frame, xlator_t *this,
         int                   real_path_len  = -1;
         char                 *entry_path     = NULL;
         int                   entry_path_len = -1;
-        struct posix_private *priv           = NULL;
         struct iatt           stbuf          = {0, };
         char                  base_path[PATH_MAX] = {0,};
         gf_dirent_t          *tmp_entry      = NULL;
@@ -3513,8 +3499,6 @@ posix_do_readdir (call_frame_t *frame, xlator_t *this,
 
         INIT_LIST_HEAD (&entries.list);
 
-        priv = this->private;
-
         ret = fd_ctx_get (fd, this, &tmp_pfd);
         if (ret < 0) {
                 gf_log (this->name, GF_LOG_WARNING,