[svn-r19153] Description:

    Bring changes on Coverity branch back to trunk:

r19040:
Fixed coverity #440 - NULL check after dereference.  We moved the NULL check up
into the IF block and changed it to assertion.

r19041:
Maintenance: Addressed Coverity issues 441 and 449 by initializing proper
variables

r19042:
In function H5O_chunk_protect (H5Ochunk.c):
 - Initialize H5O_chunk_proxy_t pointers chk_proxy and ret_value.
 - Free chk_proxy on error.

r19043:
Addressed coverity issues 442 - 448 by initializing pointers to NULL.

Tested on:
    Mac OS X/32 10.6.4 (amazon) w/debug & production
    (Too minor to require h5committest)

1 files changed, 136 insertions, 224 deletions

diff --git a/src/H5Shyper.c b/src/H5Shyper.c
index 937fc26..a4fe5a3 100644
--- a/src/H5Shyper.c
+++ b/src/H5Shyper.c
@@ -2711,43 +2711,43 @@ done:
 herr_t
 H5S_hyper_bounds(const H5S_t *space, hsize_t *start, hsize_t *end)
 {
-    int rank;                   /* Dataspace rank */
-    int i;                      /* index variable */
-    herr_t ret_value=SUCCEED;   /* Return value */
+    unsigned rank;              /* Dataspace rank */
+    unsigned i;                 /* index variable */
+    herr_t ret_value = SUCCEED; /* Return value */
 
-    FUNC_ENTER_NOAPI(H5S_hyper_bounds,FAIL)
+    FUNC_ENTER_NOAPI(H5S_hyper_bounds, FAIL)
 
-    assert(space);
-    assert(start);
-    assert(end);
+    HDassert(space);
+    HDassert(start);
+    HDassert(end);
 
     /* Set the start and end arrays up */
-    rank=space->extent.rank;
-    for(i=0; i<rank; i++) {
-        start[i]=HSIZET_MAX;
-        end[i]=0;
+    rank = space->extent.rank;
+    for(i = 0; i < rank; i++) {
+        start[i] = HSIZET_MAX;
+        end[i] = 0;
     } /* end for */
 
     /* Check for a "regular" hyperslab selection */
     if(space->select.sel_info.hslab->diminfo_valid) {
-        const H5S_hyper_dim_t *diminfo=space->select.sel_info.hslab->opt_diminfo; /* local alias for diminfo */
+        const H5S_hyper_dim_t *diminfo = space->select.sel_info.hslab->opt_diminfo; /* local alias for diminfo */
 
         /* Check each dimension */
-        for(i=0; i<rank; i++) {
+        for(i = 0; i < rank; i++) {
             /* Check for offset moving selection negative */
-            if((space->select.offset[i]+(hssize_t)diminfo[i].start)<0)
+            if((space->select.offset[i] + (hssize_t)diminfo[i].start) < 0)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "offset moves selection out of bounds")
 
             /* Compute the smallest location in this dimension */
-            start[i]=diminfo[i].start+space->select.offset[i];
+            start[i] = diminfo[i].start + space->select.offset[i];
 
             /* Compute the largest location in this dimension */
-            end[i]=diminfo[i].start+diminfo[i].stride*(diminfo[i].count-1)+(diminfo[i].block-1)+space->select.offset[i];
+            end[i] = diminfo[i].start + diminfo[i].stride * (diminfo[i].count - 1) + (diminfo[i].block - 1) + space->select.offset[i];
         } /* end for */
     } /* end if */
     else {
         /* Call the recursive routine to get the bounds for the span tree */
-        ret_value=H5S_hyper_bounds_helper(space->select.sel_info.hslab->span_lst,space->select.offset,(hsize_t)0,start,end);
+        ret_value = H5S_hyper_bounds_helper(space->select.sel_info.hslab->span_lst, space->select.offset, (hsize_t)0, start, end);
     } /* end if */
 
 done:
@@ -2781,7 +2781,7 @@ H5S_hyper_offset(const H5S_t *space, hsize_t *offset)
     const hssize_t *sel_offset; /* Pointer to the selection's offset */
     const hsize_t *dim_size;    /* Pointer to a dataspace's extent */
     hsize_t accum;              /* Accumulator for dimension sizes */
-    int rank;                   /* Dataspace rank */
+    unsigned rank;              /* Dataspace rank */
     int i;                      /* index variable */
     herr_t ret_value = SUCCEED; /* Return value */
 
@@ -2804,7 +2804,7 @@ H5S_hyper_offset(const H5S_t *space, hsize_t *offset)
 
         /* Loop through starting coordinates, calculating the linear offset */
         accum = 1;
-        for(i = (rank - 1); i >= 0; i--) {
+        for(i = (int)(rank - 1); i >= 0; i--) {
             hssize_t hyp_offset = (hssize_t)diminfo[i].start + sel_offset[i]; /* Hyperslab's offset in this dimension */
 
             /* Check for offset moving selection out of the dataspace */
@@ -2824,7 +2824,7 @@ H5S_hyper_offset(const H5S_t *space, hsize_t *offset)
 
         /* Calculate the accumulator for each dimension */
         accum = 1;
-        for(i = (rank - 1); i >= 0; i--) {
+        for(i = (int)(rank - 1); i >= 0; i--) {
             /* Set the accumulator for this dimension */
             dim_accum[i] = accum;
 
@@ -4505,115 +4505,6 @@ done:
 
 /*--------------------------------------------------------------------------
  NAME
-    H5S_hyper_move_helper
- PURPOSE
-    Helper routine to move offset in span trees
- USAGE
-    herr_t H5S_hyper_move_helper(spans, offset)
-        H5S_hyper_span_info_t *spans;   IN: Span tree to operate with
-        const hssize_t *offset;         IN: Offset to move to
- RETURNS
-    Non-negative on success, negative on failure
- DESCRIPTION
-    Adjust the location of the spans in a span tree by moving selection to an
-    offset.
- GLOBAL VARIABLES
- COMMENTS, BUGS, ASSUMPTIONS
- EXAMPLES
- REVISION LOG
---------------------------------------------------------------------------*/
-static herr_t
-H5S_hyper_move_helper (H5S_hyper_span_info_t *spans, const hssize_t *offset)
-{
-    H5S_hyper_span_t *span;     /* Pointer to current span in span tree */
-
-    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5S_hyper_move_helper);
-
-    /* Sanity check */
-    assert(spans);
-    assert(offset);
-
-    /* Check if we've already set this down span tree */
-    if(spans->scratch!=(H5S_hyper_span_info_t *)~((size_t)NULL)) {
-        /* Set the tree's scratch pointer */
-        spans->scratch=(H5S_hyper_span_info_t *)~((size_t)NULL);
-
-        /* Get the span lists for each span in this tree */
-        span=spans->head;
-
-        /* Iterate over the spans in tree */
-        while(span!=NULL) {
-            /* Adjust span location */
-            assert(*offset>=0);
-            span->high=*offset+(span->high-span->low);
-            span->low=*offset;
-
-            /* Recursively move spans in next dimension down */
-            if(span->down!=NULL)
-                H5S_hyper_move_helper(span->down,offset+1);
-
-            /* Advance to next span in this dimension */
-            span=span->next;
-        } /* end while */
-    } /* end if */
-
-    FUNC_LEAVE_NOAPI(SUCCEED);
-}   /* H5S_hyper_move_helper() */
-
-
-/*--------------------------------------------------------------------------
- NAME
-    H5S_hyper_move
- PURPOSE
-    Move a hyperslab selection by to an offset
- USAGE
-    herr_t H5S_hyper_move(space,offset)
-        H5S_t *space;           IN/OUT: Pointer to dataspace to move
-        const hssize_t *offset; IN: Offset to move to
- RETURNS
-    Non-negative on success, negative on failure
- DESCRIPTION
-    Moves a hyperslab selection to a new offset.
- GLOBAL VARIABLES
- COMMENTS, BUGS, ASSUMPTIONS
- EXAMPLES
- REVISION LOG
---------------------------------------------------------------------------*/
-herr_t
-H5S_hyper_move(H5S_t *space, const hssize_t *offset)
-{
-    unsigned u;                         /* Local index variable */
-    herr_t      ret_value=SUCCEED;       /* Return value */
-
-    FUNC_ENTER_NOAPI_NOINIT(H5S_hyper_move);
-
-    assert(space);
-    assert(offset);
-
-    /* Move to the offset with the "regular" coordinates, if they exist */
-    if(space->select.sel_info.hslab->diminfo_valid) {
-        for(u=0; u<space->extent.rank; u++) {
-            assert(offset[u]>=0);
-            space->select.sel_info.hslab->opt_diminfo[u].start=offset[u];
-        } /* end for */
-    } /* end if */
-
-    /* Subtract the offset from the span tree coordinates, if they exist */
-    if(space->select.sel_info.hslab->span_lst) {
-        if(H5S_hyper_move_helper(space->select.sel_info.hslab->span_lst,offset)<0)
-            HGOTO_ERROR(H5E_DATASPACE, H5E_BADSELECT, FAIL, "can't perform hyperslab offset movement");
-
-        /* Reset the scratch pointers for the next routine which needs them */
-        H5S_hyper_span_scratch(space->select.sel_info.hslab->span_lst, NULL);
-    } /* end if */
-
-done:
-    FUNC_LEAVE_NOAPI(ret_value);
-}   /* H5S_hyper_move() */
-
-
-/*--------------------------------------------------------------------------
- NAME
     H5S_hyper_normalize_offset
  PURPOSE
     "Normalize" a hyperslab selection by adjusting it's coordinates by the
@@ -5774,10 +5665,9 @@ static H5S_hyper_span_info_t *
 H5S_hyper_make_spans(unsigned rank, const hsize_t *start, const hsize_t *stride,
     const hsize_t *count, const hsize_t *block)
 {
-    H5S_hyper_span_info_t *down;            /* Pointer to spans in next dimension down */
-    H5S_hyper_span_t      *span;            /* New hyperslab span */
+    H5S_hyper_span_info_t *down = NULL;     /* Pointer to spans in next dimension down */
     H5S_hyper_span_t      *last_span;       /* Current position in hyperslab span list */
-    H5S_hyper_span_t      *head;            /* Head of new hyperslab span list */
+    H5S_hyper_span_t      *head = NULL;     /* Head of new hyperslab span list */
     hsize_t                stride_iter;     /* Iterator over the stride values */
     int                    i;               /* Counters */
     unsigned               u;               /* Counters */
@@ -5793,8 +5683,7 @@ H5S_hyper_make_spans(unsigned rank, const hsize_t *start, const hsize_t *stride,
     HDassert(block);
 
     /* Start creating spans in fastest changing dimension */
-    down = NULL;
-    for(i = (rank - 1); i >= 0; i--) {
+    for(i = (int)(rank - 1); i >= 0; i--) {
 
         /* Sanity check */
         if(0 == count[i])
@@ -5806,6 +5695,8 @@ H5S_hyper_make_spans(unsigned rank, const hsize_t *start, const hsize_t *stride,
 
         /* Generate all the span segments for this dimension */
         for(u = 0, stride_iter = 0; u < count[i]; u++, stride_iter += stride[i]) {
+            H5S_hyper_span_t      *span;            /* New hyperslab span */
+
             /* Allocate a span node */
             if(NULL == (span = H5FL_MALLOC(H5S_hyper_span_t)))
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTALLOC, NULL, "can't allocate hyperslab span")
@@ -5918,7 +5809,7 @@ H5S_hyper_rebuild_helper(const H5S_hyper_span_t *span, H5S_hyper_dim_t span_slab
     hsize_t curr_block, next_block;
     hsize_t curr_start;
     hsize_t curr_low;
-    int     outcount;
+    size_t outcount;
     unsigned u;
     H5S_hyper_dim_t      canon_down_span_slab_info[H5S_MAX_RANK];
     hbool_t ret_value = TRUE;
@@ -6318,6 +6209,11 @@ H5S_generate_hyperslab (H5S_t *space, H5S_seloper_t op,
                 } /* end if */
                 break;
 
+            case H5S_SELECT_NOOP:
+            case H5S_SELECT_SET:
+            case H5S_SELECT_APPEND:
+            case H5S_SELECT_PREPEND:
+            case H5S_SELECT_INVALID:
             default:
                 HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation");
         } /* end switch */
@@ -6444,6 +6340,10 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                 case H5S_SELECT_NOTB:  /* Binary "A not B" operation for hyperslabs */
                     HGOTO_DONE(SUCCEED);        /* Selection stays same */
 
+                case H5S_SELECT_NOOP:
+                case H5S_SELECT_APPEND:
+                case H5S_SELECT_PREPEND:
+                case H5S_SELECT_INVALID:
                 default:
                     HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation");
             } /* end switch */
@@ -6503,6 +6403,10 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                 case H5S_SELECT_NOTB:  /* Binary "A not B" operation for hyperslabs */
                     HGOTO_DONE(SUCCEED);        /* Selection stays "none" */
 
+                case H5S_SELECT_NOOP:
+                case H5S_SELECT_APPEND:
+                case H5S_SELECT_PREPEND:
+                case H5S_SELECT_INVALID:
                 default:
                     HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation");
             } /* end switch */
@@ -6551,6 +6455,10 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                         HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't convert selection");
                     HGOTO_DONE(SUCCEED);
 
+                case H5S_SELECT_NOOP:
+                case H5S_SELECT_APPEND:
+                case H5S_SELECT_PREPEND:
+                case H5S_SELECT_INVALID:
                 default:
                     HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation");
             } /* end switch */
@@ -6565,6 +6473,8 @@ H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op,
                 break;
             /* Else fall through to error */
 
+        case H5S_SEL_ERROR:
+        case H5S_SEL_N:
         default:
             HGOTO_ERROR(H5E_ARGS, H5E_UNSUPPORTED, FAIL, "invalid selection operation");
     } /* end switch */
@@ -7653,52 +7563,53 @@ H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
     size_t io_used;     /* Number of elements processed */
     size_t curr_seq=0; /* Number of sequence/offsets stored in the arrays */
     size_t elem_size;   /* Size of each element iterating over */
-    int ndims;         /* Number of dimensions of dataset */
-    int fast_dim;      /* Rank of the fastest changing dimension for the dataspace */
+    unsigned ndims;    /* Number of dimensions of dataset */
+    unsigned fast_dim; /* Rank of the fastest changing dimension for the dataspace */
     int curr_dim;      /* Current dimension being operated on */
+    unsigned u;        /* Index variable */
     int i;             /* Index variable */
 
-    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5S_hyper_get_seq_list_gen);
+    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5S_hyper_get_seq_list_gen)
 
     /* Check args */
-    assert(space);
-    assert(iter);
-    assert(maxseq>0);
-    assert(maxelem>0);
-    assert(nseq);
-    assert(nelem);
-    assert(off);
-    assert(len);
+    HDassert(space);
+    HDassert(iter);
+    HDassert(maxseq > 0);
+    HDassert(maxelem > 0);
+    HDassert(nseq);
+    HDassert(nelem);
+    HDassert(off);
+    HDassert(len);
 
     /* Set the rank of the fastest changing dimension */
-    ndims=space->extent.rank;
-    fast_dim=(ndims-1);
+    ndims = space->extent.rank;
+    fast_dim = (ndims - 1);
 
     /* Get the pointers to the current span info and span nodes */
-    curr_span=iter->u.hyp.span[fast_dim];
-    abs_arr=iter->u.hyp.off;
-    off_arr=space->select.offset;
-    ispan=iter->u.hyp.span;
-    elem_size=iter->elmt_size;
+    curr_span = iter->u.hyp.span[fast_dim];
+    abs_arr = iter->u.hyp.off;
+    off_arr = space->select.offset;
+    ispan = iter->u.hyp.span;
+    elem_size = iter->elmt_size;
 
     /* Set the amount of elements to perform I/O on, etc. */
-    H5_CHECK_OVERFLOW(iter->elmt_left,hsize_t,size_t);
-    io_left=MIN(maxelem,(size_t)iter->elmt_left);
-    io_bytes_left=io_left*elem_size;
+    H5_CHECK_OVERFLOW(iter->elmt_left, hsize_t, size_t);
+    io_left = MIN(maxelem, (size_t)iter->elmt_left);
+    io_bytes_left = io_left * elem_size;
 
     /* Compute the cumulative size of dataspace dimensions */
-    for(i=fast_dim, acc=elem_size; i>=0; i--) {
-        slab[i]=acc;
-        acc*=space->extent.size[i];
+    for(i = (int)fast_dim, acc = elem_size; i >= 0; i--) {
+        slab[i] = acc;
+        acc *= space->extent.size[i];
     } /* end for */
 
     /* Set the offset of the first element iterated on */
-    for(i=0, loc_off=0; i<ndims; i++)
+    for(u = 0, loc_off = 0; u < ndims; u++)
         /* Compute the sequential element offset */
-        loc_off+=(abs_arr[i]+off_arr[i])*slab[i];
+        loc_off += (abs_arr[u] + off_arr[u]) * slab[u];
 
     /* Range check against number of elements left in selection */
-    assert(io_bytes_left<=(iter->elmt_left*elem_size));
+    HDassert(io_bytes_left <= (iter->elmt_left * elem_size));
 
     /* Take care of any partial spans leftover from previous I/Os */
     if(abs_arr[fast_dim]!=curr_span->low) {
@@ -7765,7 +7676,7 @@ H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
         if(NULL == curr_span) {
 /* Same as code in main loop */
             /* Start at the next fastest dim */
-            curr_dim = fast_dim - 1;
+            curr_dim = (int)(fast_dim - 1);
 
             /* Work back up through the dimensions */
             while(curr_dim >= 0) {
@@ -7804,7 +7715,7 @@ H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
             /* Check if we have more spans in the tree */
             if(curr_dim >= 0) {
                 /* Walk back down the iterator positions, reseting them */
-                while(curr_dim < fast_dim) {
+                while((unsigned)curr_dim < fast_dim) {
                     HDassert(curr_span);
                     HDassert(curr_span->down);
                     HDassert(curr_span->down->head);
@@ -7826,8 +7737,8 @@ H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
                 HDassert(curr_span == iter->u.hyp.span[fast_dim]);
 
                 /* Reset the buffer offset */
-                for(i = 0, loc_off = 0; i < ndims; i++)
-                    loc_off += (abs_arr[i] + off_arr[i]) * slab[i];
+                for(u = 0, loc_off = 0; u < ndims; u++)
+                    loc_off += (abs_arr[u] + off_arr[u]) * slab[u];
             } /* end else */
             else
                 /* We had better be done with I/O or bad things are going to happen... */
@@ -7946,10 +7857,10 @@ H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
         /* Adjust iterator pointers */
 
         /* Start at the next fastest dim */
-        curr_dim=fast_dim-1;
+        curr_dim = (int)(fast_dim - 1);
 
         /* Work back up through the dimensions */
-        while(curr_dim>=0) {
+        while(curr_dim >= 0) {
             /* Reset the current span */
 	    curr_span=iter->u.hyp.span[curr_dim];
 
@@ -7983,51 +7894,51 @@ H5S_hyper_get_seq_list_gen(const H5S_t *space,H5S_sel_iter_t *iter,
         } /* end while */
 
         /* Check if we are finished with the spans in the tree */
-        if(curr_dim<0) {
+        if(curr_dim < 0) {
             /* We had better be done with I/O or bad things are going to happen... */
-            assert(io_bytes_left==0);
+            HDassert(io_bytes_left == 0);
             break;
         } /* end if */
         else {
             /* Walk back down the iterator positions, reseting them */
-            while(curr_dim<fast_dim) {
-                assert(curr_span);
-                assert(curr_span->down);
-                assert(curr_span->down->head);
+            while((unsigned)curr_dim < fast_dim) {
+                HDassert(curr_span);
+                HDassert(curr_span->down);
+                HDassert(curr_span->down->head);
 
                 /* Increment current dimension to the next dimension down */
                 curr_dim++;
 
                 /* Set the new span for the next dimension down */
-                iter->u.hyp.span[curr_dim]=curr_span->down->head;
+                iter->u.hyp.span[curr_dim] = curr_span->down->head;
 
                 /* Advance span down the tree */
-                curr_span=curr_span->down->head;
+                curr_span = curr_span->down->head;
 
                 /* Reset the absolute offset for the dim */
-                abs_arr[curr_dim]=curr_span->low;
+                abs_arr[curr_dim] = curr_span->low;
             } /* end while */
 
             /* Verify that the curr_span points to the fastest dim */
-            assert(curr_span==iter->u.hyp.span[fast_dim]);
+            HDassert(curr_span == iter->u.hyp.span[fast_dim]);
         } /* end else */
 
         /* Reset the buffer offset */
-        for(i=0, loc_off=0; i<ndims; i++)
-            loc_off+=(abs_arr[i]+off_arr[i])*slab[i];
+        for(u = 0, loc_off = 0; u < ndims; u++)
+            loc_off += (abs_arr[u] + off_arr[u]) * slab[u];
     } /* end while */
 
     /* Decrement number of elements left in iterator */
-    io_used=(io_left-(io_bytes_left/elem_size));
-    iter->elmt_left-=io_used;
+    io_used = (io_left - (io_bytes_left / elem_size));
+    iter->elmt_left -= io_used;
 
     /* Set the number of sequences generated */
-    *nseq=curr_seq;
+    *nseq = curr_seq;
 
     /* Set the number of elements used */
-    *nelem=io_used;
+    *nelem = io_used;
 
-    FUNC_LEAVE_NOAPI(SUCCEED);
+    FUNC_LEAVE_NOAPI(SUCCEED)
 } /* end H5S_hyper_get_seq_list_gen() */
 
 
@@ -8085,11 +7996,12 @@ H5S_hyper_get_seq_list_opt(const H5S_t *space,H5S_sel_iter_t *iter,
     size_t act_blk_count;       /* Actual number of blocks to output */
     size_t total_rows;          /* Total number of entire rows to output */
     size_t curr_rows;           /* Current number of entire rows to output */
-    int fast_dim;       /* Rank of the fastest changing dimension for the dataspace */
+    unsigned fast_dim;  /* Rank of the fastest changing dimension for the dataspace */
+    unsigned ndims;     /* Number of dimensions of dataset */
     int temp_dim;       /* Temporary rank holder */
-    int ndims;          /* Number of dimensions of dataset */
     hsize_t acc;	/* Accumulator */
     hsize_t loc;        /* Coordinate offset */
+    unsigned u;         /* Local index variable */
     int i;              /* Local index variable */
     size_t curr_seq=0;  /* Current sequence being operated on */
     size_t actual_elem; /* The actual number of elements to count */
@@ -8115,34 +8027,34 @@ H5S_hyper_get_seq_list_opt(const H5S_t *space,H5S_sel_iter_t *iter,
     tdiminfo=iter->u.hyp.diminfo;
 
     /* Check if this is a "flattened" regular hyperslab selection */
-    if(iter->u.hyp.iter_rank!=0 && iter->u.hyp.iter_rank<space->extent.rank) {
+    if(iter->u.hyp.iter_rank != 0 && iter->u.hyp.iter_rank < space->extent.rank) {
         /* Set the aliases for a few important dimension ranks */
-        ndims=iter->u.hyp.iter_rank;
-        fast_dim=ndims-1;
+        ndims = iter->u.hyp.iter_rank;
+        fast_dim = ndims - 1;
 
         /* Set the local copy of the selection offset */
-        sel_off=iter->u.hyp.sel_off;
+        sel_off = iter->u.hyp.sel_off;
 
         /* Set up the pointer to the size of the memory space */
-        mem_size=iter->u.hyp.size;
+        mem_size = iter->u.hyp.size;
     } /* end if */
     else {
         /* Set the aliases for a few important dimension ranks */
-        ndims=space->extent.rank;
-        fast_dim=ndims-1;
+        ndims = space->extent.rank;
+        fast_dim = ndims - 1;
 
         /* Set the local copy of the selection offset */
-        sel_off=space->select.offset;
+        sel_off = space->select.offset;
 
         /* Set up the pointer to the size of the memory space */
-        mem_size=space->extent.size;
+        mem_size = space->extent.size;
     } /* end else */
 
     /* initialize row sizes for each dimension */
-    elem_size=iter->elmt_size;
-    for(i=(ndims-1),acc=elem_size; i>=0; i--) {
-        slab[i]=acc;
-        acc*=mem_size[i];
+    elem_size = iter->elmt_size;
+    for(i = (int)fast_dim, acc = elem_size; i >= 0; i--) {
+        slab[i] = acc;
+        acc *= mem_size[i];
     } /* end for */
 
     /* Calculate the number of elements to sequence through */
@@ -8166,8 +8078,8 @@ H5S_hyper_get_seq_list_opt(const H5S_t *space,H5S_sel_iter_t *iter,
         actual_elem=MIN(leftover,io_left);
 
         /* Compute the initial buffer offset */
-        for(i=0,loc=0; i<ndims; i++)
-            loc+=(iter->u.hyp.off[i]+sel_off[i])*slab[i];
+        for(u = 0, loc = 0; u < ndims; u++)
+            loc += (iter->u.hyp.off[u] + sel_off[u]) * slab[u];
 
         /* Add a new sequence */
         off[curr_seq]=loc;
@@ -8199,24 +8111,24 @@ H5S_hyper_get_seq_list_opt(const H5S_t *space,H5S_sel_iter_t *iter,
 
         /* Copy the location of the point to get */
         /* (Add in the selection offset) */
-        for(i=0; i<ndims; i++)
-            offset[i] = iter->u.hyp.off[i] + sel_off[i];
+        for(u = 0; u < ndims; u++)
+            offset[u] = iter->u.hyp.off[u] + sel_off[u];
 
         /* Compute the current "counts" for this location */
-        for(i=0; i<ndims; i++) {
-            if(tdiminfo[i].count==1) {
-                tmp_count[i] = 0;
-                tmp_block[i] = iter->u.hyp.off[i]-tdiminfo[i].start;
+        for(u = 0; u < ndims; u++) {
+            if(tdiminfo[u].count == 1) {
+                tmp_count[u] = 0;
+                tmp_block[u] = iter->u.hyp.off[u] - tdiminfo[u].start;
             } /* end if */
             else {
-                tmp_count[i] = (iter->u.hyp.off[i]-tdiminfo[i].start)/tdiminfo[i].stride;
-                tmp_block[i] = (iter->u.hyp.off[i]-tdiminfo[i].start)%tdiminfo[i].stride;
+                tmp_count[u] = (iter->u.hyp.off[u] - tdiminfo[u].start) / tdiminfo[u].stride;
+                tmp_block[u] = (iter->u.hyp.off[u] - tdiminfo[u].start) % tdiminfo[u].stride;
             } /* end else */
         } /* end for */
 
         /* Compute the initial buffer offset */
-        for(i=0,loc=0; i<ndims; i++)
-            loc+=offset[i]*slab[i];
+        for(u = 0, loc = 0; u < ndims; u++)
+            loc += offset[u] * slab[u];
 
         /* Set the number of elements to write each time */
         H5_ASSIGN_OVERFLOW(actual_elem,tdiminfo[fast_dim].block,hsize_t,size_t);
@@ -8239,12 +8151,12 @@ H5S_hyper_get_seq_list_opt(const H5S_t *space,H5S_sel_iter_t *iter,
         tot_blk_count=MIN(tot_blk_count,(maxseq-curr_seq));
 
         /* Compute the amount to wrap at the end of each row */
-        for(i=0; i<ndims; i++)
-            wrap[i]=(mem_size[i]-(tdiminfo[i].stride*tdiminfo[i].count))*slab[i];
+        for(u = 0; u < ndims; u++)
+            wrap[u] = (mem_size[u] - (tdiminfo[u].stride * tdiminfo[u].count)) * slab[u];
 
         /* Compute the amount to skip between blocks */
-        for(i=0; i<ndims; i++)
-            skip[i]=(tdiminfo[i].stride-tdiminfo[i].block)*slab[i];
+        for(u = 0; u < ndims; u++)
+            skip[u] = (tdiminfo[u].stride - tdiminfo[u].block) * slab[u];
 
         /* Check if there is a partial row left (with full blocks) */
         if(tmp_count[fast_dim]>0) {
@@ -8292,7 +8204,7 @@ H5S_hyper_get_seq_list_opt(const H5S_t *space,H5S_sel_iter_t *iter,
                 tmp_count[fast_dim]=0;
 
                 /* Increment the offset and count for the other dimensions */
-                temp_dim=fast_dim-1;
+                temp_dim = (int)fast_dim - 1;
                 while(temp_dim>=0) {
                     /* Move to the next row in the curent dimension */
                     offset[temp_dim]++;
@@ -8392,7 +8304,7 @@ H5S_hyper_get_seq_list_opt(const H5S_t *space,H5S_sel_iter_t *iter,
             loc += wrap[fast_dim];
 
             /* Increment the offset and count for the other dimensions */
-            temp_dim=fast_dim-1;
+            temp_dim = (int)fast_dim - 1;
             while(temp_dim>=0) {
                 /* Move to the next row in the curent dimension */
                 offset[temp_dim]++;
@@ -8491,20 +8403,20 @@ H5S_hyper_get_seq_list_opt(const H5S_t *space,H5S_sel_iter_t *iter,
 
         /* Update the iterator with the location we stopped */
         /* (Subtract out the selection offset) */
-        for(i=0; i<ndims; i++)
-            iter->u.hyp.off[i] = offset[i] - sel_off[i];
+        for(u = 0; u < ndims; u++)
+            iter->u.hyp.off[u] = offset[u] - sel_off[u];
 
         /* Decrement the number of elements left in selection */
-        iter->elmt_left-=(nelmts-io_left);
+        iter->elmt_left -= (nelmts - io_left);
     } /* end if */
 
     /* Set the number of sequences generated */
-    *nseq=curr_seq;
+    *nseq = curr_seq;
 
     /* Set the number of bytes used */
-    *nelem=start_io_left-io_left;
+    *nelem = start_io_left - io_left;
 
-    FUNC_LEAVE_NOAPI(SUCCEED);
+    FUNC_LEAVE_NOAPI(SUCCEED)
 } /* end H5S_hyper_get_seq_list_opt() */