Core changes to selection code from the hyperslab_updates branch.

1 files changed, 1309 insertions, 89 deletions

diff --git a/test/tselect.c b/test/tselect.c
index 424c144..842fe17 100644
--- a/test/tselect.c
+++ b/test/tselect.c
@@ -157,6 +157,12 @@
 #define SPACERE5_DIM3            12
 #define SPACERE5_DIM4            8
 
+/* Information for Space update diminfo test */
+#define SPACEUD1_DIM0            20
+#define SPACEUD3_DIM0            9
+#define SPACEUD3_DIM1            12
+#define SPACEUD3_DIM2            13
+
 /* #defines for shape same / different rank tests */
 #define SS_DR_MAX_RANK		5
 
@@ -11489,7 +11495,8 @@ test_space_rebuild(void)
    hid_t sid_irreg1,sid_irreg2,sid_irreg3,sid_irreg4,sid_irreg5;
 
    /* rebuild status state */
-   htri_t rebuild_stat,rebuild_check;
+   H5S_diminfo_valid_t rebuild_stat1,rebuild_stat2;
+   htri_t rebuild_check;
    herr_t ret;
 
    /* dimensions of rank 1 to rank 5 */
@@ -11558,19 +11565,23 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_reg1,H5S_SELECT_OR,start1,stride1,count1,block1);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = FALSE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_reg1);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be TRUE. */
-    if(!rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_reg1,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 and rebuild_stat2 should be
+     * H5S_DIMINFO_VALID_YES. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_YES) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }
-    else {
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(ret != FAIL) {
        /* In this case, rebuild_check should be TRUE. */
        rebuild_check = H5S__select_shape_same_test(sid_reg1,sid_reg_ori1);
        CHECK(rebuild_check,FALSE,"H5S_hyper_rebuild");
-    }
+    } /* end if */
 
     /* For irregular hyperslab */
     sid_irreg1     = H5Screate_simple(SPACERE1_RANK,dims1,NULL);
@@ -11590,14 +11601,19 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_irreg1,H5S_SELECT_OR,start1,stride1,count1,block1);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = TRUE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_irreg1);
-    assert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be FALSE. */
-    if(rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_irreg1,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 should be H5S_DIMINFO_VALID_NO and
+     * rebuild_stat2 should be H5S_DIMINFO_VALID_IMPOSSIBLE. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_IMPOSSIBLE) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }/* No need to do shape comparision */
+    } /* end if */
+    /* No need to do shape comparision */
 
 
     MESSAGE(7, ("Testing functionality to rebuild 2-D hyperslab selection\n"));
@@ -11637,19 +11653,23 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_reg2,H5S_SELECT_OR,start2,stride2,count2,block2);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = FALSE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_reg2);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be TRUE. */
-    if(!rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_reg2,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 and rebuild_stat2 should be
+     * H5S_DIMINFO_VALID_YES. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_YES) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }
-    else {
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(ret != FAIL) {
        /* In this case, rebuild_check should be TRUE. */
        rebuild_check = H5S__select_shape_same_test(sid_reg2,sid_reg_ori2);
        CHECK(rebuild_check,FALSE,"H5S_hyper_rebuild");
-    }
+    } /* end if */
 
     /* 2-D irregular case */
     sid_irreg2     = H5Screate_simple(SPACERE2_RANK,dims2,NULL);
@@ -11674,14 +11694,19 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_irreg2,H5S_SELECT_OR,start2,stride2,count2,block2);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = TRUE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_irreg2);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be FALSE. */
-    if(rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_irreg2,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 should be H5S_DIMINFO_VALID_NO and
+     * rebuild_stat2 should be H5S_DIMINFO_VALID_IMPOSSIBLE. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_NO) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }/* No need to do shape comparision */
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_IMPOSSIBLE) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    /* No need to do shape comparision */
 
     MESSAGE(7, ("Testing functionality to rebuild 3-D hyperslab selection\n"));
 
@@ -11726,20 +11751,23 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_reg3,H5S_SELECT_OR,start3,stride3,count3,block3);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = FALSE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_reg3);
-    HDassert(rebuild_stat!=FAIL);
-
-    /* In this case, rebuild_stat should be TRUE. */
-    if(!rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_reg3,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 and rebuild_stat2 should be
+     * H5S_DIMINFO_VALID_YES. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_YES) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }
-    else {
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(ret != FAIL) {
        /* In this case, rebuild_check should be TRUE. */
        rebuild_check = H5S__select_shape_same_test(sid_reg3,sid_reg_ori3);
        CHECK(rebuild_check,FALSE,"H5S_hyper_rebuild");
-    }
+    } /* end if */
 
     sid_irreg3     = H5Screate_simple(SPACERE3_RANK,dims3,NULL);
 
@@ -11769,14 +11797,19 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_irreg3,H5S_SELECT_OR,start3,stride3,count3,block3);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = TRUE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_irreg3);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be FALSE. */
-    if(rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_irreg3,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 should be H5S_DIMINFO_VALID_NO and
+     * rebuild_stat2 should be H5S_DIMINFO_VALID_IMPOSSIBLE. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_NO) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }/* No need to do shape comparision */
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_IMPOSSIBLE) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    /* No need to do shape comparision */
 
     MESSAGE(7, ("Testing functionality to rebuild 4-D hyperslab selection\n"));
 
@@ -11829,19 +11862,23 @@ test_space_rebuild(void)
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
 
-    rebuild_stat = FALSE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_reg4);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be TRUE. */
-    if(!rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_reg4,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 and rebuild_stat2 should be
+     * H5S_DIMINFO_VALID_YES. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_YES) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }
-    else {
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(ret != FAIL) {
        /* In this case, rebuild_check should be TRUE. */
        rebuild_check = H5S__select_shape_same_test(sid_reg4,sid_reg_ori4);
        CHECK(rebuild_check,FALSE,"H5S_hyper_rebuild");
-    }
+    } /* end if */
 
     /* Testing irregular selection */
     sid_irreg4     = H5Screate_simple(SPACERE4_RANK,dims4,NULL);
@@ -11882,14 +11919,19 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_irreg4,H5S_SELECT_OR,start4,stride4,count4,block4);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = TRUE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_irreg4);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be FALSE. */
-    if(rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_irreg4,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 should be H5S_DIMINFO_VALID_NO and
+     * rebuild_stat2 should be H5S_DIMINFO_VALID_IMPOSSIBLE. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_IMPOSSIBLE) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }/* No need to do shape comparision */
+    } /* end if */
+    /* No need to do shape comparision */
 
     MESSAGE(7, ("Testing functionality to rebuild 5-D hyperslab selection\n"));
 
@@ -11946,19 +11988,23 @@ test_space_rebuild(void)
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
 
-    rebuild_stat = FALSE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_reg5);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be TRUE. */
-    if(!rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_reg5,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 and rebuild_stat2 should be
+     * H5S_DIMINFO_VALID_YES. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_YES) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }
-    else {
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(ret != FAIL) {
        /* In this case, rebuild_check should be TRUE. */
        rebuild_check = H5S__select_shape_same_test(sid_reg5,sid_reg_ori5);
        CHECK(rebuild_check,FALSE,"H5S_hyper_rebuild");
-    }
+    } /* end if */
 
     sid_irreg5     = H5Screate_simple(SPACERE5_RANK,dims5,NULL);
 
@@ -12004,14 +12050,19 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_irreg5,H5S_SELECT_OR,start5,stride5,count5,block5);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = TRUE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_irreg5);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be FALSE. */
-    if(rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_irreg5,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 should be H5S_DIMINFO_VALID_NO and
+     * rebuild_stat2 should be H5S_DIMINFO_VALID_IMPOSSIBLE. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_IMPOSSIBLE) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }/* No need to do shape comparision */
+    } /* end if */
+    /* No need to do shape comparision */
 
    /* We use 5-D to test a special case with
       rebuilding routine TRUE, FALSE and TRUE */
@@ -12045,13 +12096,20 @@ test_space_rebuild(void)
 
     ret = H5Sselect_hyperslab(sid_spec,H5S_SELECT_SET,start5,stride5,count5,block5);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
-    rebuild_stat = FALSE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_spec);
-    /* In this case, rebuild_stat should be TRUE. */
-    if(!rebuild_stat){
+
+    ret = H5S__get_rebuild_status_test(sid_spec,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 and rebuild_stat2 should both be
+     * H5S_DIMINFO_VALID_YES. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_YES) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }/* No need to do shape comparision */
+    } /* end if */
+    /* No need to do shape comparision */
 
     /* Adding some selections to make it real irregular */
     start5[3]  = 1;
@@ -12067,14 +12125,19 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_spec,H5S_SELECT_OR,start5,stride5,count5,block5);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = TRUE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_spec);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be FALSE. */
-    if(rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_spec,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 should be H5S_DIMINFO_VALID_NO and
+     * rebuild_stat2 should be H5S_DIMINFO_VALID_IMPOSSIBLE. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_IMPOSSIBLE) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }/* No need to do shape comparision */
+    } /* end if */
+    /* No need to do shape comparision */
 
     /* Add more selections to make it regular again */
     start5[3]  = 5;
@@ -12090,14 +12153,19 @@ test_space_rebuild(void)
     ret = H5Sselect_hyperslab(sid_spec,H5S_SELECT_OR,start5,stride5,count5,block5);
     CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    rebuild_stat = FALSE;
-    rebuild_stat = H5S__get_rebuild_status_test(sid_spec);
-    HDassert(rebuild_stat!=FAIL);
-    /* In this case, rebuild_stat should be FALSE. */
-    if(!rebuild_stat){
+    ret = H5S__get_rebuild_status_test(sid_spec,&rebuild_stat1,&rebuild_stat2);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    /* In this case, rebuild_stat1 should be H5S_DIMINFO_VALID_NO and
+     * rebuild_stat2 should be H5S_DIMINFO_VALID_YES. */
+    if(rebuild_stat1 != H5S_DIMINFO_VALID_NO) {
        ret = FAIL;
        CHECK(ret,FAIL,"H5S_hyper_rebuild");
-    }/* No need to do shape comparision */
+    } /* end if */
+    if(rebuild_stat2 != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret,FAIL,"H5S_hyper_rebuild");
+    } /* end if */
+    /* No need to do shape comparision */
 
     H5Sclose(sid_reg1);
     CHECK(ret, FAIL, "H5Sclose");
@@ -12131,6 +12199,791 @@ test_space_rebuild(void)
 
 /****************************************************************
 **
+**  test_space_update_diminfo(): Tests selection diminfo update
+**  routine.  We will test whether regular selections can be
+**  quickly updated when the selection is modified.
+**
+**
+****************************************************************/
+static void
+test_space_update_diminfo(void)
+{
+   hid_t space_id;                      /* Dataspace id */
+   H5S_diminfo_valid_t diminfo_valid;   /* Diminfo status */
+   H5S_diminfo_valid_t rebuild_status;  /* Diminfo status after rebuid */
+   H5S_sel_type sel_type;               /* Selection type */
+   herr_t ret;                          /* Return value */
+
+   /* dimensions of rank 1 to rank 5 */
+   hsize_t dims1[] ={SPACEUD1_DIM0};
+   hsize_t dims3[] ={SPACEUD3_DIM0, SPACEUD3_DIM1, SPACEUD3_DIM2};
+
+   /* The start of the hyperslab */
+   hsize_t start1[1], start3[3];
+
+   /* The stride of the hyperslab */
+   hsize_t stride1[1], stride3[3];
+
+   /* The number of blocks for the hyperslab */
+   hsize_t count1[1], count3[3];
+
+   /* The size of each block for the hyperslab */
+   hsize_t block1[1], block3[3];
+
+
+    /* Output message about test being performed */
+    MESSAGE(6, ("Testing functionality to update hyperslab dimension info\n"));
+
+
+    MESSAGE(7, ("Testing functionality to update 1-D hyperslab dimension info\n"));
+
+    /*
+     * Test adding regularly spaced distinct blocks
+     */
+
+    /* Create 1-D dataspace */
+    space_id       = H5Screate_simple(1, dims1, NULL);
+
+    /* Create single block */
+    start1[0]  = 3;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add block after first, with OR */
+    start1[0]  = 6;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add block before first, this time with XOR */
+    start1[0]  = 0;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_XOR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add two blocks after current block */
+    start1[0]  = 9;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add two blocks overlapping current block, with OR */
+    start1[0]  = 9;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add two blocks partially overlapping current block, with OR */
+    start1[0]  = 12;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add two blocks partially overlapping current block, with XOR */
+    start1[0]  = 15;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_XOR, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO, after rebuild it should be IMPOSSIBLE */
+    ret = H5S__get_rebuild_status_test(space_id, &diminfo_valid,
+            &rebuild_status);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+    if(rebuild_status != H5S_DIMINFO_VALID_IMPOSSIBLE) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_rebuild");
+    } /* end if */
+
+    /* Fill in missing block */
+    start1[0]  = 15;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_XOR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO, after rebuild it should be YES */
+    ret = H5S__get_rebuild_status_test(space_id, &diminfo_valid,
+            &rebuild_status);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+    if(rebuild_status != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_rebuild");
+    } /* end if */
+
+    /*
+     * Test adding contiguous blocks
+     */
+
+    /* Create single block */
+    start1[0]  = 3;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add block immediately after first, with OR */
+    start1[0]  = 5;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add block immediately before first, with XOR */
+    start1[0]  = 1;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add differently size block immediately after current, with OR */
+    start1[0]  = 7;
+    count1[0]  = 1;
+    block1[0]  = 7;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /*
+     * Test adding overlapping blocks
+     */
+
+    /* Create single block */
+    start1[0]  = 3;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add block completely overlapping first, with OR */
+    start1[0]  = 3;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add block parially overlapping first, with OR */
+    start1[0]  = 4;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add block completely enclosing current, with OR */
+    start1[0]  = 2;
+    count1[0]  = 1;
+    block1[0]  = 5;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add block completely enclosed by current, with OR */
+    start1[0]  = 3;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add equally sized block parially overlapping current, with XOR */
+    start1[0]  = 3;
+    count1[0]  = 1;
+    block1[0]  = 5;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_XOR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Fill in hole in block */
+    start1[0]  = 3;
+    count1[0]  = 1;
+    block1[0]  = 4;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO, after rebuild it should be YES */
+    ret = H5S__get_rebuild_status_test(space_id, &diminfo_valid,
+            &rebuild_status);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+    if(rebuild_status != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_rebuild");
+    } /* end if */
+
+    /* Add differently sized block parially overlapping current, with XOR */
+    start1[0]  = 4;
+    count1[0]  = 1;
+    block1[0]  = 5;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_XOR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Fill in hole in block */
+    start1[0]  = 4;
+    count1[0]  = 1;
+    block1[0]  = 4;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO, after rebuild it should be YES */
+    ret = H5S__get_rebuild_status_test(space_id, &diminfo_valid,
+            &rebuild_status);
+    CHECK(ret, FAIL, "H5S__get_rebuild_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+    if(rebuild_status != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_rebuild");
+    } /* end if */
+
+    /* Add block completely overlapping current, with XOR */
+    start1[0]  = 2;
+    count1[0]  = 1;
+    block1[0]  = 7;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_XOR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    sel_type = H5Sget_select_type(space_id);
+    VERIFY(sel_type, H5S_SEL_NONE, "H5Sget_select_type");
+
+    /*
+     * Test various conditions that break the fast algorithm
+     */
+
+    /* Create multiple blocks */
+    start1[0]  = 3;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create single block with start out of phase */
+    start1[0]  = 8;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks */
+    start1[0]  = 3;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks with start out of phase */
+    start1[0]  = 8;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks */
+    start1[0]  = 3;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks with wrong stride */
+    start1[0]  = 9;
+    stride1[0] = 4;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create single block */
+    start1[0]  = 3;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create single block with wrong size */
+    start1[0]  = 6;
+    count1[0]  = 1;
+    block1[0]  = 1;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create single block */
+    start1[0]  = 3;
+    count1[0]  = 1;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks with wrong size */
+    start1[0]  = 6;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 1;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks */
+    start1[0]  = 3;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create single block with wrong size */
+    start1[0]  = 9;
+    count1[0]  = 1;
+    block1[0]  = 1;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, NULL, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks */
+    start1[0]  = 3;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks with wrong size */
+    start1[0]  = 9;
+    stride1[0] = 3;
+    count1[0]  = 2;
+    block1[0]  = 1;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start1, stride1, count1, block1);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    ret = H5Sclose(space_id);
+    CHECK(ret, FAIL, "H5Sclose");
+
+
+    MESSAGE(7, ("Testing functionality to update 3-D hyperslab dimension info\n"));
+
+    /* Create 3-D dataspace */
+    space_id       = H5Screate_simple(3, dims3, NULL);
+
+    /* Create multiple blocks */
+    start3[0]  = 0;
+    start3[1]  = 1;
+    start3[2]  = 2;
+    stride3[0] = 2;
+    stride3[1] = 3;
+    stride3[2] = 4;
+    count3[0]  = 4;
+    count3[1]  = 3;
+    count3[2]  = 2;
+    block3[0]  = 1;
+    block3[1]  = 2;
+    block3[2]  = 3;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start3, stride3, count3, block3);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add blocks with same values in all dimensions */
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start3, stride3, count3, block3);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add blocks with same values in two dimensions */
+    start3[0]  = 8;
+    stride3[0] = 1;
+    count3[0]  = 1;
+    block3[0]  = 1;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start3, stride3, count3, block3);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks */
+    start3[0]  = 0;
+    start3[1]  = 1;
+    start3[2]  = 2;
+    stride3[0] = 2;
+    stride3[1] = 3;
+    stride3[2] = 4;
+    count3[0]  = 4;
+    count3[1]  = 3;
+    count3[2]  = 2;
+    block3[0]  = 1;
+    block3[1]  = 2;
+    block3[2]  = 3;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start3, stride3, count3, block3);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add blocks with same values in one dimension */
+    start3[0]  = 8;
+    start3[1]  = 10;
+    stride3[0] = 1;
+    stride3[1] = 1;
+    count3[0]  = 1;
+    count3[1]  = 1;
+    block3[0]  = 1;
+    block3[1]  = 2;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start3, stride3, count3, block3);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Create multiple blocks */
+    start3[0]  = 0;
+    start3[1]  = 1;
+    start3[2]  = 2;
+    stride3[0] = 2;
+    stride3[1] = 3;
+    stride3[2] = 4;
+    count3[0]  = 4;
+    count3[1]  = 3;
+    count3[2]  = 2;
+    block3[0]  = 1;
+    block3[1]  = 2;
+    block3[2]  = 3;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_SET, start3, stride3, count3, block3);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be YES */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_YES) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    /* Add blocks with same values in no dimensions */
+    start3[0]  = 8;
+    start3[1]  = 10;
+    start3[2]  = 10;
+    stride3[0] = 1;
+    stride3[1] = 1;
+    stride3[2] = 1;
+    count3[0]  = 1;
+    count3[1]  = 1;
+    count3[2]  = 1;
+    block3[0]  = 1;
+    block3[1]  = 2;
+    block3[2]  = 3;
+    ret = H5Sselect_hyperslab(space_id, H5S_SELECT_OR, start3, stride3, count3, block3);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* diminfo_valid should be NO */
+    ret = H5S__get_diminfo_status_test(space_id, &diminfo_valid);
+    CHECK(ret, FAIL, "H5S__get_diminfo_status_test");
+    if(diminfo_valid != H5S_DIMINFO_VALID_NO) {
+       ret = FAIL;
+       CHECK(ret, FAIL, "H5S_hyper_update_diminfo");
+    } /* end if */
+
+    ret = H5Sclose(space_id);
+    CHECK(ret, FAIL, "H5Sclose");
+} /* end test_space_update_diminfo() */
+
+
+/****************************************************************
+**
 **  test_select_hyper_chunk_offset(): Tests selections on dataspace,
 **      verify that offsets for hyperslab selections are working in
 **      chunked datasets.
@@ -13241,6 +14094,365 @@ test_hyper_unlim(void)
 
 /****************************************************************
 **
+**  test_internal_consistency(): Tests selections on dataspace, then
+**  verify that internal states of data structures of selections are
+**  consistent.
+**
+****************************************************************/
+static void
+test_internal_consistency(void)
+{
+    hid_t	all_sid;	/* Dataspace ID	with "all" selection */
+    hid_t	none_sid;	/* Dataspace ID	with "none" selection */
+    hid_t	single_pt_sid;	/* Dataspace ID	with single point selection */
+    hid_t	mult_pt_sid;	/* Dataspace ID	with multiple point selection */
+    hid_t	single_hyper_sid;	/* Dataspace ID	with single block hyperslab selection */
+    hid_t	single_hyper_all_sid;	/* Dataspace ID	with single block hyperslab
+                                         * selection that is the entire dataspace
+                                         */
+    hid_t	single_hyper_pt_sid;	/* Dataspace ID	with single block hyperslab
+                                         * selection that is the same as the single
+                                         * point selection
+                                         */
+    hid_t	regular_hyper_sid;	/* Dataspace ID	with regular hyperslab selection */
+    hid_t	irreg_hyper_sid;	/* Dataspace ID	with irregular hyperslab selection */
+    hid_t	none_hyper_sid;	/* Dataspace ID	with "no hyperslabs" selection */
+    hid_t	scalar_all_sid;	/* ID for scalar dataspace with "all" selection */
+    hid_t	scalar_none_sid;	/* ID for scalar dataspace with "none" selection */
+    hid_t	tmp_sid;	/* Temporary dataspace ID */
+    hsize_t	dims[] = {SPACE9_DIM1, SPACE9_DIM2};
+    hsize_t	coord1[1][SPACE2_RANK]; /* Coordinates for single point selection */
+    hsize_t	coord2[SPACE9_DIM2][SPACE9_RANK]; /* Coordinates for multiple point selection */
+    hsize_t     start[SPACE9_RANK]; /* Hyperslab start */
+    hsize_t     stride[SPACE9_RANK]; /* Hyperslab stride */
+    hsize_t     count[SPACE9_RANK]; /* Hyperslab block count */
+    hsize_t     block[SPACE9_RANK]; /* Hyperslab block size */
+    htri_t	check;		/* Shape comparison return value */
+    herr_t	ret;		/* Generic return value	*/
+
+    /* Output message about test being performed */
+    MESSAGE(6, ("Testing Consistency of Internal States\n"));
+    assert(SPACE9_DIM2>=POINT1_NPOINTS);
+
+    /* Create dataspace for "all" selection */
+    all_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(all_sid, FAIL, "H5Screate_simple");
+
+    /* Select entire extent for dataspace */
+    ret = H5Sselect_all(all_sid);
+    CHECK(ret, FAIL, "H5Sselect_all");
+
+    /* Create dataspace for "none" selection */
+    none_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(none_sid, FAIL, "H5Screate_simple");
+
+    /* Un-Select entire extent for dataspace */
+    ret = H5Sselect_none(none_sid);
+    CHECK(ret, FAIL, "H5Sselect_none");
+
+    /* Create dataspace for single point selection */
+    single_pt_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(single_pt_sid, FAIL, "H5Screate_simple");
+
+    /* Select sequence of ten points for multiple point selection */
+    coord1[0][0] = 2; coord1[0][1] = 2;
+    ret = H5Sselect_elements(single_pt_sid, H5S_SELECT_SET, (size_t)1, (const hsize_t *)coord1);
+    CHECK(ret, FAIL, "H5Sselect_elements");
+
+    /* Create dataspace for multiple point selection */
+    mult_pt_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(mult_pt_sid, FAIL, "H5Screate_simple");
+
+    /* Select sequence of ten points for multiple point selection */
+    coord2[0][0]=2; coord2[0][1]=2;
+    coord2[1][0]=7; coord2[1][1]=2;
+    coord2[2][0]=1; coord2[2][1]=4;
+    coord2[3][0]=2; coord2[3][1]=6;
+    coord2[4][0]=0; coord2[4][1]=8;
+    coord2[5][0]=3; coord2[5][1]=2;
+    coord2[6][0]=4; coord2[6][1]=4;
+    coord2[7][0]=1; coord2[7][1]=0;
+    coord2[8][0]=5; coord2[8][1]=1;
+    coord2[9][0]=9; coord2[9][1]=3;
+    ret = H5Sselect_elements(mult_pt_sid, H5S_SELECT_SET, (size_t)POINT1_NPOINTS, (const hsize_t *)coord2);
+    CHECK(ret, FAIL, "H5Sselect_elements");
+
+    /* Create dataspace for single hyperslab selection */
+    single_hyper_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(single_hyper_sid, FAIL, "H5Screate_simple");
+
+    /* Select 10x10 hyperslab for single hyperslab selection  */
+    start[0]=1; start[1]=1;
+    stride[0]=1; stride[1]=1;
+    count[0]=1; count[1]=1;
+    block[0]=(SPACE9_DIM1-2); block[1]=(SPACE9_DIM2-2);
+    ret = H5Sselect_hyperslab(single_hyper_sid,H5S_SELECT_SET,start,stride,count,block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* Create dataspace for single hyperslab selection with entire extent selected */
+    single_hyper_all_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(single_hyper_all_sid, FAIL, "H5Screate_simple");
+
+    /* Select entire extent for hyperslab selection */
+    start[0]=0; start[1]=0;
+    stride[0]=1; stride[1]=1;
+    count[0]=1; count[1]=1;
+    block[0]=SPACE9_DIM1; block[1]=SPACE9_DIM2;
+    ret = H5Sselect_hyperslab(single_hyper_all_sid,H5S_SELECT_SET,start,stride,count,block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* Create dataspace for single hyperslab selection with single point selected */
+    single_hyper_pt_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(single_hyper_pt_sid, FAIL, "H5Screate_simple");
+
+    /* Select entire extent for hyperslab selection */
+    start[0]=2; start[1]=2;
+    stride[0]=1; stride[1]=1;
+    count[0]=1; count[1]=1;
+    block[0]=1; block[1]=1;
+    ret = H5Sselect_hyperslab(single_hyper_pt_sid,H5S_SELECT_SET,start,stride,count,block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* Create dataspace for regular hyperslab selection */
+    regular_hyper_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(regular_hyper_sid, FAIL, "H5Screate_simple");
+
+    /* Select regular, strided hyperslab selection */
+    start[0]=2; start[1]=2;
+    stride[0]=2; stride[1]=2;
+    count[0]=5; count[1]=2;
+    block[0]=1; block[1]=1;
+    ret = H5Sselect_hyperslab(regular_hyper_sid,H5S_SELECT_SET,start,stride,count,block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* Create dataspace for irregular hyperslab selection */
+    irreg_hyper_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(irreg_hyper_sid, FAIL, "H5Screate_simple");
+
+    /* Create irregular hyperslab selection by OR'ing two blocks together */
+    start[0]=2; start[1]=2;
+    stride[0]=1; stride[1]=1;
+    count[0]=1; count[1]=1;
+    block[0]=1; block[1]=1;
+    ret = H5Sselect_hyperslab(irreg_hyper_sid,H5S_SELECT_SET,start,stride,count,block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    start[0]=4; start[1]=4;
+    stride[0]=1; stride[1]=1;
+    count[0]=1; count[1]=1;
+    block[0]=3; block[1]=3;
+    ret = H5Sselect_hyperslab(irreg_hyper_sid,H5S_SELECT_OR,start,stride,count,block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* Create dataspace for "no" hyperslab selection */
+    none_hyper_sid = H5Screate_simple(SPACE9_RANK, dims, NULL);
+    CHECK(none_hyper_sid, FAIL, "H5Screate_simple");
+
+    /* Create "no" hyperslab selection by XOR'ing same blocks together */
+    start[0]=2; start[1]=2;
+    stride[0]=1; stride[1]=1;
+    count[0]=1; count[1]=1;
+    block[0]=1; block[1]=1;
+    ret = H5Sselect_hyperslab(none_hyper_sid,H5S_SELECT_SET,start,stride,count,block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    ret = H5Sselect_hyperslab(none_hyper_sid,H5S_SELECT_XOR,start,stride,count,block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* Create scalar dataspace for "all" selection */
+    scalar_all_sid = H5Screate(H5S_SCALAR);
+    CHECK(scalar_all_sid, FAIL, "H5Screate");
+
+    /* Create scalar dataspace for "none" selection */
+    scalar_none_sid = H5Screate(H5S_SCALAR);
+    CHECK(scalar_none_sid, FAIL, "H5Screate");
+
+    /* Un-Select entire extent for dataspace */
+    ret = H5Sselect_none(scalar_none_sid);
+    CHECK(ret, FAIL, "H5Sselect_none");
+
+    /* Test all the selections created */
+
+	/* Test the copy of itself */
+	tmp_sid=H5Scopy(all_sid);
+	CHECK(tmp_sid, FAIL, "H5Scopy");
+
+	check = H5S__internal_consistency_test(tmp_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	ret = H5Sclose(tmp_sid);
+	CHECK(ret, FAIL, "H5Sclose");
+
+	/* Test "none" selection */
+	check = H5S__internal_consistency_test(none_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test single point selection */
+	check = H5S__internal_consistency_test(single_pt_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test multiple point selection */
+	check = H5S__internal_consistency_test(mult_pt_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test "plain" single hyperslab selection */
+	check = H5S__internal_consistency_test(single_hyper_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test "all" single hyperslab selection */
+	check = H5S__internal_consistency_test(single_hyper_all_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test "single point" single hyperslab selection */
+	check = H5S__internal_consistency_test(single_hyper_pt_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test regular, strided hyperslab selection */
+	check = H5S__internal_consistency_test(regular_hyper_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test irregular hyperslab selection */
+	check = H5S__internal_consistency_test(irreg_hyper_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test "no" hyperslab selection */
+	check = H5S__internal_consistency_test(none_hyper_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test scalar "all" hyperslab selection */
+	check = H5S__internal_consistency_test(scalar_all_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+	/* Test scalar "none" hyperslab selection */
+	check = H5S__internal_consistency_test(scalar_none_sid);
+	VERIFY(check, TRUE, "H5S__internal_consistency_test");
+
+    /* Close dataspaces */
+    ret = H5Sclose(all_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(none_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(single_pt_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(mult_pt_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(single_hyper_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(single_hyper_all_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(single_hyper_pt_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(regular_hyper_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(irreg_hyper_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(none_hyper_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(scalar_all_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(scalar_none_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+}   /* test_internal_consistency() */
+
+/****************************************************************
+**
+**  test_irreg_io(): Tests unusual selections on datasets, to stress the
+**  new hyperslab code.
+**
+****************************************************************/
+static void
+test_irreg_io(void)
+{
+    hid_t       fid;            /* File ID */
+    hid_t       did;            /* Dataset ID */
+    hid_t       dcpl_id;        /* Dataset creation property list ID */
+    hid_t       sid;            /* File dataspace ID */
+    hid_t       mem_sid;        /* Memory dataspace ID */
+    hsize_t	dims[] = {6, 12};       /* Dataspace dimensions */
+    hsize_t	chunk_dims[] = {2, 2};  /* Chunk dimensions */
+    hsize_t	mem_dims[] = {32};      /* Memory dataspace dimensions */
+    hsize_t     start[2];       /* Hyperslab start */
+    hsize_t     stride[2];      /* Hyperslab stride */
+    hsize_t     count[2];       /* Hyperslab block count */
+    hsize_t     block[2];       /* Hyperslab block size */
+    unsigned char wbuf[72];     /* Write buffer */
+    unsigned char rbuf[32];     /* Read buffer */
+    unsigned    u;              /* Local index variable */
+    herr_t	ret;		/* Generic return value	*/
+
+    /* Output message about test being performed */
+    MESSAGE(6, ("Testing Irregular Hyperslab I/O\n"));
+
+    /* Create file */
+    fid = H5Fcreate(FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(fid, FAIL, "H5Fcreate");
+
+    /* Create dataspace for dataset */
+    sid = H5Screate_simple(2, dims, NULL);
+    CHECK(sid, FAIL, "H5Screate_simple");
+
+    /* Set chunk dimensions for dataset */
+    dcpl_id = H5Pcreate(H5P_DATASET_CREATE);
+    CHECK(dcpl_id, FAIL, "H5Pcreate");
+    ret = H5Pset_chunk(dcpl_id, 2, chunk_dims);
+    CHECK(ret, FAIL, "H5Pset_chunk");
+
+    /* Create a dataset */
+    did = H5Dcreate2(fid, SPACE1_NAME, H5T_NATIVE_UCHAR, sid, H5P_DEFAULT, dcpl_id, H5P_DEFAULT);
+    CHECK(did, FAIL, "H5Dcreate2");
+
+    /* Initialize the write buffer */
+    for(u = 0; u < 72; u++)
+        wbuf[u] = (unsigned char)u;
+
+    /* Write entire dataset to disk */
+    ret = H5Dwrite(did, H5T_NATIVE_UCHAR, H5S_ALL, H5S_ALL, H5P_DEFAULT, wbuf);
+    CHECK(ret, FAIL, "H5Dwrite");
+
+    /* Close the DCPL */
+    ret = H5Pclose(dcpl_id);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Create dataspace for memory selection */
+    mem_sid = H5Screate_simple(1, mem_dims, NULL);
+    CHECK(mem_sid, FAIL, "H5Screate_simple");
+
+    /* Select 'L'-shaped region within dataset */
+    start[0] = 0; start[1] = 10;
+    stride[0] = 1; stride[1] = 1;
+    count[0] = 4; count[1] = 2;
+    block[0] = 1; block[1] = 1;
+    ret = H5Sselect_hyperslab(sid, H5S_SELECT_SET, start, stride, count, block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    start[0] = 4; start[1] = 0;
+    stride[0] = 1; stride[1] = 1;
+    count[0] = 2; count[1] = 12;
+    block[0] = 1; block[1] = 1;
+    ret = H5Sselect_hyperslab(sid, H5S_SELECT_OR, start, stride, count, block);
+    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+
+    /* Reset the buffer */
+    HDmemset(rbuf, 0, sizeof(rbuf));
+
+    /* Read selection from disk */
+    ret = H5Dread(did, H5T_NATIVE_UCHAR, mem_sid, sid, H5P_DEFAULT, rbuf);
+    CHECK(ret, FAIL, "H5Dread");
+
+
+    /* Close everything */
+    ret = H5Sclose(mem_sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Dclose(did);
+    CHECK(ret, FAIL, "H5Dclose");
+    ret = H5Fclose(fid);
+    CHECK(ret, FAIL, "H5Fclose");
+}   /* test_irreg_io() */
+
+/****************************************************************
+**
 **  test_select(): Main H5S selection testing routine.
 **
 ****************************************************************/
@@ -13382,6 +14594,8 @@ test_select(void)
     /* Test "re-build" routine */
     test_space_rebuild();
 
+    /* Test "update diminfo" routine */
+    test_space_update_diminfo();
 
     /* Test point selections in chunked datasets */
     test_select_point_chunk();
@@ -13402,6 +14616,12 @@ test_select(void)
     /* Test unlimited hyperslab selections */
     test_hyper_unlim();
 
+    /* Test the consistency of internal data structures of selection */
+    test_internal_consistency();
+
+    /* Test irregular selection I/O */
+    test_irreg_io();
+
 }   /* test_select() */