Hdf5 1 10 merges from dev (#662)

* HDFFV-10865 - merge from dev, HDFArray perf fix.

* Remove duplicate setting

* Whitespace changes after clang format

* Undo version 11 clang format changes

* Merge CMake changes from develop

* test testing script merge from develop

* Update supported platforms

* PR#3 merge from develop

* Merge gcc 10 diagnostics option from develop

* Merge #318 OSX changes from develop

* Merge small changes from develop

* Minor non-space formatting changes

* #386 copyright corrections for java folder

* Merges from develop

#358 patches from vtk
#361 fix header guard spelling

* Merge updates

#358 patches from vtk
#361 fix header guard spelling

* format fix

* Fix missing underscore and make H5public.h closer to dev

* Merges from develop

#340 clang -Wformat-security warnings
#360 Fixed uninitialized warnings
header guard underscore cleanup
JNI cleanup

* format alignment

* Add missing test ref file

* Merge #380 from develop

* Finish java merges from develop

* Fix java issues with tests and javadoc

* Correct use of attribute access plist

* Remove debug code

* Remove unused variable

* Change file access to read only for java tests

* Split clang format operations.

* More javadoc comments

* Remove pre-split setting

* format source

* Change windows TS to use older VS.

* Mostly all javadoc fixes, one argument rename.

* synch file

* Merge of long double fix and compiler flags

* HDFFV-11229 merge changes from develop

* HDFFV-11229 correct test script

* HDFFV-11229 update autotools test script for two ref files

* HDFFV-11229 merge dev changes for long double display in tools

* Committing clang-format changes

* minor whitespace

* remove unneeded macro

* Committing clang-format changes

* Add "option" command for clang options

* Rework CMake add_custom to use the BYPRODUCTS argument

Update pkgconfig scripts for parallel builds.
Fix install COPYING file reference.
Remove unused round defines.
Change CMake default setting of BUILD_CPP to off.

* Fortran target depends

* Remove incorrect source attribute

* Revert define removal

* printf specifiers and VS2015 min changes

* Committing clang-format changes

* Add time struct

* TRILAB-227 and tools debug merges from develop

* Merge various changes from dev

* Issue #669 remove version from pkgcfg filename

* remove version from h5cc script

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

7 files changed, 151 insertions, 160 deletions

diff --git a/tools/lib/h5diff.c b/tools/lib/h5diff.c
index d55b605..15ad483 100644
--- a/tools/lib/h5diff.c
+++ b/tools/lib/h5diff.c
@@ -451,7 +451,7 @@ build_match_list(const char *objname1, trav_info_t *info1, const char *objname2,
 done:
     *table_out = table;
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 }
 
 /*-------------------------------------------------------------------------
@@ -483,7 +483,7 @@ trav_grp_symlinks(const char *path, const H5L_info_t *linfo, void *udata)
     const char *       ext_path;
     herr_t             ret_value = SUCCEED;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     /* init linkinfo struct */
     HDmemset(&lnk_info, 0, sizeof(h5tool_link_info_t));
 
@@ -567,7 +567,7 @@ trav_grp_symlinks(const char *path, const H5L_info_t *linfo, void *udata)
 done:
     if (lnk_info.trg_path)
         HDfree(lnk_info.trg_path);
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -615,7 +615,7 @@ h5diff(const char *fname1, const char *fname2, const char *objname1, const char
     trav_table_t *match_list = NULL;
     diff_err_t    ret_value  = H5DIFF_NO_ERR;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     /* init filenames */
     HDmemset(filenames, 0, MAX_FILENAME * 2);
     /* init link info struct */
diff --git a/tools/lib/h5diff_array.c b/tools/lib/h5diff_array.c
index 46dcf7f..c79dd7e 100644
--- a/tools/lib/h5diff_array.c
+++ b/tools/lib/h5diff_array.c
@@ -225,7 +225,7 @@ diff_array(void *_mem1, void *_mem2, diff_opt_t *opts, hid_t container1_id, hid_
     mcomp_t        members;
     H5T_class_t    type_class;
 
-    H5TOOLS_START_DEBUG(" - rank:%d hs_nelmts:%ld errstat:%d", opts->rank, opts->hs_nelmts, opts->err_stat);
+    H5TOOLS_START_DEBUG(" - rank:%d hs_nelmts:%lld errstat:%d", opts->rank, opts->hs_nelmts, opts->err_stat);
     opts->print_header = 1; /* enable print header  */
 
     /* get the size. */
@@ -411,7 +411,7 @@ diff_array(void *_mem1, void *_mem2, diff_opt_t *opts, hid_t container1_id, hid_
             HDmemset(&members, 0, sizeof(mcomp_t));
             get_member_types(opts->m_tid, &members);
             for (i = 0; i < opts->hs_nelmts; i++) {
-                H5TOOLS_DEBUG("opts->pos[%ld]:%ld - nelmts:%ld", i, opts->pos[i], opts->hs_nelmts);
+                H5TOOLS_DEBUG("opts->pos[%lld]:%lld - nelmts:%lld", i, opts->pos[i], opts->hs_nelmts);
                 nfound += diff_datum(mem1 + i * size, mem2 + i * size, i, opts, container1_id, container2_id,
                                      &members);
                 if (opts->count_bool && nfound >= opts->count)
@@ -419,7 +419,7 @@ diff_array(void *_mem1, void *_mem2, diff_opt_t *opts, hid_t container1_id, hid_
             } /* i */
             close_member_types(&members);
     } /* switch */
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
     return nfound;
 }
 
@@ -475,7 +475,7 @@ diff_datum(void *_mem1, void *_mem2, hsize_t elemtno, diff_opt_t *opts, hid_t co
     hsize_t        nfound    = 0; /* differences found */
     diff_err_t     ret_value = opts->err_stat;
 
-    H5TOOLS_START_DEBUG("ph:%d elemtno:%d - errstat:%d", opts->print_header, elemtno, opts->err_stat);
+    H5TOOLS_START_DEBUG("ph:%d elemtno:%lld - errstat:%d", opts->print_header, elemtno, opts->err_stat);
 
     type_size  = H5Tget_size(opts->m_tid);
     type_class = H5Tget_class(opts->m_tid);
@@ -593,8 +593,8 @@ diff_datum(void *_mem1, void *_mem2, hsize_t elemtno, diff_opt_t *opts, hid_t co
                  *       of length of strings.
                  *       For now mimic the previous way.
                  */
-                H5TOOLS_DEBUG("string size:%d", size1);
-                H5TOOLS_DEBUG("string size:%d", size2);
+                H5TOOLS_DEBUG("string size:%ld", size1);
+                H5TOOLS_DEBUG("string size:%ld", size2);
                 if (size1 != size2) {
                     H5TOOLS_DEBUG("string sizes difference");
                     nfound++;
@@ -725,7 +725,7 @@ diff_datum(void *_mem1, void *_mem2, hsize_t elemtno, diff_opt_t *opts, hid_t co
             H5TOOLS_DEBUG("H5T_ARRAY ph=%d", opts->print_header);
 
             arr_opts = *opts;
-            H5TOOLS_DEBUG("Check opts: hs_nelmts:%ld to %ld rank:%d to %ld", opts->hs_nelmts,
+            H5TOOLS_DEBUG("Check opts: hs_nelmts:%lld to %lld rank:%d to %d", opts->hs_nelmts,
                           arr_opts.hs_nelmts, opts->rank, arr_opts.rank);
             /* get the array's base datatype for each element */
             arr_opts.m_tid = H5Tget_super(opts->m_tid);
@@ -1064,7 +1064,7 @@ diff_datum(void *_mem1, void *_mem2, hsize_t elemtno, diff_opt_t *opts, hid_t co
 done:
     opts->err_stat = opts->err_stat | ret_value;
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
     return nfound;
 }
 
@@ -1156,7 +1156,7 @@ diff_region(hid_t obj1_id, hid_t obj2_id, hid_t region1_id, hid_t region2_id, di
     hsize_t  nfound_p  = 0; /* point differences found */
     hsize_t  ret_value = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     ndims1 = H5Sget_simple_extent_ndims(region1_id);
     ndims2 = H5Sget_simple_extent_ndims(region2_id);
@@ -1175,8 +1175,8 @@ diff_region(hid_t obj1_id, hid_t obj2_id, hid_t region1_id, hid_t region2_id, di
         npoints2 = H5Sget_select_elem_npoints(region2_id);
     }
     H5E_END_TRY;
-    H5TOOLS_DEBUG("blocks: 1=%ld-2=%ld", nblocks1, nblocks2);
-    H5TOOLS_DEBUG("points: 1=%ld-2=%ld", npoints1, npoints2);
+    H5TOOLS_DEBUG("blocks: 1=%lld-2=%lld", nblocks1, nblocks2);
+    H5TOOLS_DEBUG("points: 1=%lld-2=%lld", npoints1, npoints2);
 
     if (nblocks1 != nblocks2 || npoints1 != npoints2 || ndims1 != ndims2) {
         opts->not_cmp = 1;
@@ -1332,7 +1332,7 @@ diff_region(hid_t obj1_id, hid_t obj2_id, hid_t region1_id, hid_t region2_id, di
     ret_value = nfound_p + nfound_b;
 
 done:
-    H5TOOLS_ENDDEBUG(" with diffs:%d", ret_value);
+    H5TOOLS_ENDDEBUG(" with diffs:%lld", ret_value);
     return ret_value;
 }
 
@@ -1369,7 +1369,7 @@ character_compare(char *mem1, char *mem2, hsize_t elemtno, size_t u, diff_opt_t
         }
         nfound++;
     }
-    H5TOOLS_ENDDEBUG(": %d", nfound);
+    H5TOOLS_ENDDEBUG(": %lld", nfound);
     return nfound;
 }
 
@@ -1440,7 +1440,7 @@ character_compare_opt(unsigned char *mem1, unsigned char *mem2, hsize_t elemtno,
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(": %d zero:%d", nfound, both_zero);
+    H5TOOLS_ENDDEBUG(": %lld zero:%d", nfound, both_zero);
     return nfound;
 }
 
@@ -1621,7 +1621,7 @@ diff_float_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx, d
         }
     }
 
-    H5TOOLS_ENDDEBUG(": %d zero:%d", nfound, both_zero);
+    H5TOOLS_ENDDEBUG(": %lld zero:%d", nfound, both_zero);
     return nfound;
 }
 
@@ -1792,7 +1792,7 @@ diff_double_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx,
             nfound++;
         }
     }
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -1967,7 +1967,7 @@ diff_ldouble_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx,
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2056,7 +2056,7 @@ diff_schar_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx, d
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2144,7 +2144,7 @@ diff_uchar_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx, d
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2232,7 +2232,7 @@ diff_short_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx, d
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2324,7 +2324,7 @@ diff_ushort_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx,
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2412,7 +2412,7 @@ diff_int_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx, dif
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2500,7 +2500,7 @@ diff_uint_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx, di
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2588,7 +2588,7 @@ diff_long_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx, di
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2678,7 +2678,7 @@ diff_ulong_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx, d
         nfound++;
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2771,7 +2771,7 @@ diff_llong_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx, d
         }
     }
 
-    H5TOOLS_ENDDEBUG(":%d - errstat:%d", nfound, opts->err_stat);
+    H5TOOLS_ENDDEBUG(":%lld - errstat:%d", nfound, opts->err_stat);
 
     return nfound;
 }
@@ -2871,7 +2871,7 @@ diff_ullong_element(unsigned char *mem1, unsigned char *mem2, hsize_t elem_idx,
         }
     }
 
-    H5TOOLS_ENDDEBUG(": %d zero:%d", nfound, both_zero);
+    H5TOOLS_ENDDEBUG(": %lld zero:%d", nfound, both_zero);
     return nfound;
 }
 
@@ -2890,7 +2890,7 @@ ull2float(unsigned long long ull_value, float *f_value)
     size_t         dst_size;
     int            ret_value = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((dxpl_id = H5Pcreate(H5P_DATASET_XFER)) < 0)
         H5TOOLS_GOTO_ERROR(FAIL, "H5Pcreate failed");
 
@@ -2917,7 +2917,7 @@ done:
     if (buf)
         HDfree(buf);
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -3119,96 +3119,87 @@ print_header(diff_opt_t *opts)
 static void
 print_pos(diff_opt_t *opts, hsize_t idx, size_t u)
 {
-    int i, j;
-
-    H5TOOLS_START_DEBUG(" -- idx:%ld", idx);
+    H5TOOLS_START_DEBUG(" -- idx:%lld", idx);
 
     if (print_data(opts)) {
+        hsize_t curr_pos = idx;
         /* print header */
         if (opts->print_header == 1) {
             opts->print_header = 0;
-
             print_header(opts);
         } /* end print header */
 
         H5TOOLS_DEBUG("rank=%d", opts->rank);
         if (opts->rank > 0) {
-            hsize_t curr_pos = idx;
-
             parallel_print("[ ");
-            H5TOOLS_DEBUG("do calc_acc_pos[%ld] nelmts:%d - errstat:%d", idx, opts->hs_nelmts,
+            H5TOOLS_DEBUG("do calc_acc_pos[%lld] nelmts:%lld - errstat:%d", idx, opts->hs_nelmts,
                           opts->err_stat);
-
             if (opts->sset[0] != NULL) {
                 /* Subsetting is used - calculate total position */
-                hsize_t prev_dim_size = 0; /* previous dim size */
-                hsize_t prev_str      = 0; /* previouw stride idx*/
-                hsize_t str_cnt       = 0; /* stride multiplier*/
-                hsize_t curr_idx      = 0; /* calculated running position */
-                hsize_t str_idx       = 0;
-                hsize_t blk_idx       = 0;
-                hsize_t cnt_idx       = 0;
-                hsize_t dim_size      = 0; /* current dim size */
-                hsize_t elmnt_cnt     = 1;
-                hsize_t next_idx      = idx;
-                hsize_t data_idx      = 0;
-                j                     = opts->rank - 1;
-                H5TOOLS_DEBUG("...begin:%ld=> opts->rank:%ld (idx:%ld)", j, opts->rank, idx);
-                do {
-                    curr_idx = next_idx;                      /* New current data position */
-                    cnt_idx  = opts->sset[0]->count.data[j];  /* Count value for current dim */
-                    blk_idx  = opts->sset[0]->block.data[j];  /* Block value for current dim */
-                    str_idx  = opts->sset[0]->stride.data[j]; /* Stride value for current dim */
-                    H5TOOLS_DEBUG("... sset loop:%d with curr_pos:%ld (curr_idx:%ld) - c:%ld b:%ld s:%ld", j,
-                                  curr_pos, curr_idx, cnt_idx, blk_idx, str_idx);
-                    dim_size = opts->dims[j]; /* Current dimension size */
-                    H5TOOLS_DEBUG("... sset loop:%d with elmnt_cnt:%ld - (prev_dim_size:%ld - dim_size:%ld) "
-                                  "- str_cnt:%ld",
-                                  j, elmnt_cnt, prev_dim_size, dim_size, str_cnt);
-                    data_idx = elmnt_cnt * dim_size;
-                    H5TOOLS_DEBUG("... sset loop:%d with curr_pos:%ld (data_idx:%ld)", j, curr_pos, data_idx);
-                    for (i = 0; i < cnt_idx; i++) {
-                        H5TOOLS_DEBUG("... ... data loop:%d with cnt_idx:%ld - str_cnt:%ld (curr_idx:%ld - "
-                                      "data_idx:%ld)",
-                                      i, cnt_idx, str_cnt, curr_idx, data_idx);
-                        if (curr_idx >= data_idx) {
-                            /* get to next block */
-                            data_idx += str_idx * dim_size;
-                            /* get next block */
-                            str_cnt++;
-                            H5TOOLS_DEBUG(
-                                "... ... data loop:%d with cnt_idx:%ld - str_cnt:%ld - data_idx:%ld", i,
-                                cnt_idx, str_cnt, data_idx);
-                        }
-                        H5TOOLS_DEBUG("... ... end data loop:%d with dim_cnt:%ld - str_cnt:%ld - "
-                                      "(curr_idx:%ld - data_idx:%ld)",
-                                      i, dim_size, str_cnt, curr_idx, data_idx);
+                hsize_t curr_idx = 0; /* current pos in the selection space for each dimension */
+
+                curr_pos = 0; /* current position in full space */
+                if (curr_idx < idx) {
+                    int     j;
+                    hsize_t count;
+                    hsize_t block;
+                    hsize_t stride;
+                    hsize_t tmp                 = 0;
+                    hsize_t k0                  = 0; /* whole location beyond current dimension */
+                    hsize_t k1                  = 0; /* partial location within dimension */
+                    hsize_t dim_size            = 0; /* previous dim size */
+                    hsize_t prev_dim_size       = 0; /* previous dim size */
+                    hsize_t total_dim_size      = 1; /* current dim size */
+                    hsize_t prev_total_dim_size = 1; /* current dim size */
+
+                    prev_dim_size  = 1;
+                    total_dim_size = 1;
+                    curr_idx       = idx;
+                    /* begin with fastest changing dimension */
+                    for (int i = 0; i < opts->rank; i++) {
+                        j = opts->rank - i - 1;
+                        prev_total_dim_size *= prev_dim_size;
+                        dim_size = opts->dims[j];
+                        H5TOOLS_DEBUG("j=%d, dim_size=%lld, prev_dim_size=%lld, total_dim_size=%lld, "
+                                      "prev_total_dim_size=%lld",
+                                      j, dim_size, prev_dim_size, total_dim_size, prev_total_dim_size);
+                        count  = opts->sset[0]->count.data[j];
+                        block  = opts->sset[0]->block.data[j];
+                        stride = opts->sset[0]->stride.data[j];
+                        H5TOOLS_DEBUG("stride=%lld, count=%lld, block=%lld", stride, count, block);
+                        tmp = count * block;
+                        k0  = curr_idx / tmp;
+                        k1  = curr_idx % tmp;
+                        curr_pos += k1 * stride * prev_total_dim_size;
+                        H5TOOLS_DEBUG("curr_idx=%lld, k0=%lld, k1=%lld, curr_pos=%lld", curr_idx, k0, k1,
+                                      curr_pos);
+                        if (k0 > 0)
+                            curr_idx = k0 * total_dim_size;
+                        H5TOOLS_DEBUG("curr_idx=%lld, tmp=%lld", curr_idx, tmp);
+                        total_dim_size *= dim_size;
+                        /* if last calculation exists within in current dimension */
+                        if (k0 == 0)
+                            break;
+                        H5TOOLS_DEBUG("j=%d, curr_pos=%lld", j, curr_pos);
+                        prev_dim_size = dim_size;
                     }
-                    next_idx += dim_size * str_cnt;
-                    H5TOOLS_DEBUG("... sset loop:%d with curr_idx:%ld (next_idx:%ld)", j, curr_idx, next_idx);
-                    str_cnt       = 0;
-                    prev_str      = str_idx;
-                    prev_dim_size = dim_size;
-                    H5TOOLS_DEBUG("... end sset loop:%d with prev_dim_size:%ld (curr_idx:%ld - data_idx:%ld) "
-                                  "- str_cnt:%ld",
-                                  j, prev_dim_size, curr_idx, data_idx, str_cnt);
-                    elmnt_cnt *= dim_size; /* Total number of elements in dimension */
-                    j--;
-                } while (next_idx >= elmnt_cnt && j >= 0);
-                curr_pos = curr_idx; /* New current position */
-                H5TOOLS_DEBUG("pos loop:%d,%d with  elmnt_cnt:%ld - curr_pos:%ld", i, j, elmnt_cnt, curr_pos);
-            } /* if (opts->sset[0] != NULL) */
+                    /* check if there is a final calculation needed for slowest changing dimension */
+                    if (k0 > 0)
+                        curr_pos += k0 * stride * prev_total_dim_size;
+                    H5TOOLS_DEBUG("4:curr_idx=%lld, curr_pos=%lld", curr_idx, curr_pos);
+                }
+            }
             /*
              * Calculate the number of elements represented by a unit change in a
              * certain index position.
              */
             calc_acc_pos((unsigned)opts->rank, curr_pos, opts->acc, opts->pos);
 
-            for (i = 0; i < opts->rank; i++) {
-                H5TOOLS_DEBUG("pos loop:%d with opts->pos=%ld opts->sm_pos=%ld", i, opts->pos[i],
+            for (int i = 0; i < opts->rank; i++) {
+                H5TOOLS_DEBUG("pos loop:%d with opts->pos=%lld opts->sm_pos=%lld", i, opts->pos[i],
                               opts->sm_pos[i]);
                 opts->pos[i] += (unsigned long)opts->sm_pos[i];
-                H5TOOLS_DEBUG("pos loop:%d with opts->pos=%ld", i, opts->pos[i]);
+                H5TOOLS_DEBUG("pos loop:%d with opts->pos=%lld", i, opts->pos[i]);
                 parallel_print(HSIZE_T_FORMAT, (unsigned long long)opts->pos[i]);
                 parallel_print(" ");
             }
@@ -3227,7 +3218,7 @@ print_pos(diff_opt_t *opts, hsize_t idx, size_t u)
         parallel_print(SPACES);
     }
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 }
 
 /*-------------------------------------------------------------------------
diff --git a/tools/lib/h5diff_dset.c b/tools/lib/h5diff_dset.c
index 8de2b11..0e276fc 100644
--- a/tools/lib/h5diff_dset.c
+++ b/tools/lib/h5diff_dset.c
@@ -949,7 +949,7 @@ diff_can_type(hid_t f_tid1, hid_t f_tid2, int rank1, int rank2, hsize_t *dims1,
     int         i;
     int         ret_value = 1;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     /*-------------------------------------------------------------------------
      * check for the same class
      *-------------------------------------------------------------------------
diff --git a/tools/lib/h5diff_util.c b/tools/lib/h5diff_util.c
index 3e24802..e487a12 100644
--- a/tools/lib/h5diff_util.c
+++ b/tools/lib/h5diff_util.c
@@ -339,7 +339,7 @@ match_up_memsize(hid_t f_tid1_id, hid_t f_tid2_id, hid_t *m_tid1, hid_t *m_tid2,
 {
     herr_t ret_value = SUCCEED;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((*m_size1) != (*m_size2)) {
         if ((*m_size1) < (*m_size2)) {
             H5Tclose(*m_tid1);
@@ -362,6 +362,6 @@ match_up_memsize(hid_t f_tid1_id, hid_t f_tid2_id, hid_t *m_tid1, hid_t *m_tid2,
         H5TOOLS_GOTO_ERROR(FAIL, "native type sizes do not compare");
 
 done:
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
diff --git a/tools/lib/h5tools.c b/tools/lib/h5tools.c
index 7ee4678..bc4ac36 100644
--- a/tools/lib/h5tools.c
+++ b/tools/lib/h5tools.c
@@ -950,7 +950,7 @@ h5tools_simple_prefix(FILE *stream, const h5tool_format_t *info, h5tools_context
     if (!ctx->need_prefix)
         return;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     HDmemset(&prefix, 0, sizeof(h5tools_str_t));
     HDmemset(&str, 0, sizeof(h5tools_str_t));
@@ -1019,7 +1019,7 @@ h5tools_simple_prefix(FILE *stream, const h5tool_format_t *info, h5tools_context
     h5tools_str_close(&prefix);
     h5tools_str_close(&str);
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 }
 
 /*-------------------------------------------------------------------------
@@ -1265,7 +1265,7 @@ h5tools_render_element(FILE *stream, const h5tool_format_t *info, h5tools_contex
 
     ctx->prev_multiline = multiline;
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 
     return dimension_break;
 }
@@ -1306,7 +1306,7 @@ h5tools_render_region_element(FILE *stream, const h5tool_format_t *info, h5tools
     int     secnum;                 /* section sequence number */
     int     multiline;              /* datum was multiline */
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     H5TOOLS_DEBUG("elmt_counter=%ld - local_elmt_counter=%ld", elmt_counter, local_elmt_counter);
 
     s = h5tools_str_fmt(buffer, (size_t)0, "%s");
@@ -1419,7 +1419,7 @@ h5tools_render_region_element(FILE *stream, const h5tool_format_t *info, h5tools
 
     ctx->prev_multiline = multiline;
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 
     return dimension_break;
 }
@@ -1438,7 +1438,7 @@ init_acc_pos(unsigned ndims, const hsize_t *dims, hsize_t *acc, hsize_t *pos, hs
     int      i;
     unsigned j;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     for (i = 0; (unsigned)i < ndims; i++)
         p_min_idx[i] = 0;
@@ -1453,7 +1453,7 @@ init_acc_pos(unsigned ndims, const hsize_t *dims, hsize_t *acc, hsize_t *pos, hs
             pos[j] = 0;
     }
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 }
 
 /*-------------------------------------------------------------------------
@@ -1471,7 +1471,7 @@ calc_acc_pos(unsigned ndims, hsize_t elmtno, const hsize_t *acc, hsize_t *pos)
     int     i;
     hsize_t curr_pos = elmtno;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     if (ndims > 0) {
         for (i = 0; i < (int)ndims; i++) {
@@ -1486,7 +1486,7 @@ calc_acc_pos(unsigned ndims, hsize_t elmtno, const hsize_t *acc, hsize_t *pos)
         }
     }
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 
     return curr_pos;
 }
@@ -1510,7 +1510,7 @@ render_bin_output(FILE *stream, hid_t container, hid_t tid, void *_mem, hsize_t
     hbool_t        past_catch = FALSE;
     int            ret_value  = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((size = H5Tget_size(tid)) == 0)
         H5TOOLS_THROW((-1), "H5Tget_size failed");
 
@@ -1717,7 +1717,7 @@ render_bin_output(FILE *stream, hid_t container, hid_t tid, void *_mem, hsize_t
     } /* end switch */
 
     CATCH
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -1750,7 +1750,7 @@ render_bin_output_region_data_blocks(hid_t region_id, FILE *stream, hid_t contai
     hid_t    sid1      = H5I_INVALID_HID;
     int      ret_value = -1;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     /* Get the dataspace of the dataset */
     if ((sid1 = H5Dget_space(region_id)) < 0)
         H5TOOLS_THROW((-1), "H5Dget_space failed");
@@ -1816,7 +1816,7 @@ done:;
     if (H5Sclose(sid1) < 0)
         H5TOOLS_ERROR((-1), "H5Sclose failed");
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -1844,7 +1844,7 @@ render_bin_output_region_blocks(hid_t region_space, hid_t region_id, FILE *strea
     hbool_t  past_catch = FALSE;
     hbool_t  ret_value  = TRUE;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((snblocks = H5Sget_select_hyper_nblocks(region_space)) <= 0)
         H5TOOLS_THROW(FALSE, "H5Sget_select_hyper_nblocks failed");
     nblocks = (hsize_t)snblocks;
@@ -1880,7 +1880,7 @@ done:
     H5_LEAVE(TRUE)
 
     CATCH
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -1911,7 +1911,7 @@ render_bin_output_region_data_points(hid_t region_space, hid_t region_id, FILE *
     void *   region_buf = NULL;
     int      ret_value  = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((type_size = H5Tget_size(type_id)) == 0)
         H5TOOLS_GOTO_ERROR((-1), "H5Tget_size failed");
 
@@ -1941,7 +1941,7 @@ done:
     if (H5Sclose(mem_space) < 0)
         H5TOOLS_ERROR((-1), "H5Sclose failed");
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -1967,7 +1967,7 @@ render_bin_output_region_points(hid_t region_space, hid_t region_id, FILE *strea
     hbool_t  past_catch = FALSE;
     hbool_t  ret_value  = TRUE;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((snpoints = H5Sget_select_elem_npoints(region_space)) <= 0)
         H5TOOLS_THROW(FALSE, "H5Sget_select_elem_npoints failed");
     npoints = (hsize_t)snpoints;
@@ -1994,7 +1994,7 @@ done:
 
     H5_LEAVE(ret_value)
     CATCH
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
diff --git a/tools/lib/h5tools_dump.c b/tools/lib/h5tools_dump.c
index 493df39..fb0353f 100644
--- a/tools/lib/h5tools_dump.c
+++ b/tools/lib/h5tools_dump.c
@@ -465,7 +465,7 @@ done:
 
     CATCH
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -522,7 +522,7 @@ h5tools_print_region_data_blocks(hid_t region_id, FILE *stream, const h5tool_for
 
     HDmemset(&ctx, 0, sizeof(ctx));
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     if ((type_size = H5Tget_size(type_id)) == 0)
         H5TOOLS_THROW(FAIL, "H5Tget_size failed");
@@ -642,7 +642,7 @@ done:
     if (H5Sclose(sid1) < 0)
         H5TOOLS_ERROR(FAIL, "H5Sclose failed");
     CATCH
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 
     return ret_value;
 }
@@ -696,7 +696,7 @@ h5tools_dump_region_data_blocks(hid_t region_space, hid_t region_id, FILE *strea
     HDassert(ctx);
     HDassert(buffer);
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     outputformat           = *info;
     outputformat.idx_fmt   = "";
     outputformat.idx_n_fmt = "";
@@ -865,7 +865,7 @@ done:
 
     CATCH
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 
     return ret_value;
 }
@@ -915,7 +915,7 @@ h5tools_print_region_data_points(hid_t region_space, hid_t region_id, FILE *stre
     HDassert(ptdata);
     HDassert(ndims > 0);
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     HDmemset(&ctx, 0, sizeof(ctx));
     /* Allocate space for the dimension array */
@@ -1001,7 +1001,7 @@ done:
     if (H5Sclose(mem_space) < 0)
         H5TOOLS_ERROR((-1), "H5Sclose failed");
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 
     return ret_value;
 }
@@ -1053,7 +1053,7 @@ h5tools_dump_region_data_points(hid_t region_space, hid_t region_id, FILE *strea
     HDassert(ctx);
     HDassert(buffer);
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     outputformat           = *info;
     outputformat.idx_fmt   = "";
     outputformat.idx_n_fmt = "";
@@ -1217,7 +1217,7 @@ done:
     H5_LEAVE(dimension_break)
     CATCH
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 
     return ret_value;
 }
@@ -1284,7 +1284,7 @@ h5tools_print_simple_subset(FILE *stream, const h5tool_format_t *info, h5tools_c
     unsigned int vl_data   = 0; /* contains VL datatypes */
     herr_t       ret_value = SUCCEED;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((size_t)ctx->ndims > NELMTS(sm_size))
         H5TOOLS_THROW(FAIL, "ndims and sm_size comparision failed");
 
@@ -1398,7 +1398,7 @@ h5tools_print_simple_subset(FILE *stream, const h5tool_format_t *info, h5tools_c
     if (sm_buf)
         HDfree(sm_buf);
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -1583,7 +1583,7 @@ h5tools_dump_simple_subset(FILE *stream, const h5tool_format_t *info, h5tools_co
     hbool_t past_catch = FALSE;
     herr_t  ret_value  = SUCCEED;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((f_space = H5Dget_space(dset)) < 0)
         H5TOOLS_THROW(FAIL, "H5Dget_space failed");
 
@@ -1607,7 +1607,7 @@ h5tools_dump_simple_subset(FILE *stream, const h5tool_format_t *info, h5tools_co
     if (f_space >= 0 && H5Sclose(f_space) < 0)
         H5TOOLS_THROW(FAIL, "H5Sclose failed");
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -1660,7 +1660,7 @@ h5tools_dump_simple_dset(FILE *stream, const h5tool_format_t *info, h5tools_cont
     unsigned int vl_data   = 0; /* contains VL datatypes */
     int          ret_value = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if (H5I_INVALID_HID == (f_space = H5Dget_space(dset)))
         H5TOOLS_GOTO_ERROR((-1), "H5Dget_space failed");
 
@@ -1795,7 +1795,7 @@ done:
     if (f_space >= 0 && H5Sclose(f_space) < 0)
         H5TOOLS_ERROR((-1), "H5Sclose failed");
     CATCH
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -1826,7 +1826,7 @@ h5tools_dump_simple_mem(FILE *stream, const h5tool_format_t *info, h5tools_conte
     /* VL data special information */
     unsigned int vl_data = 0; /* contains VL datatypes */
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if (H5I_INVALID_HID == (f_space = H5Aget_space(attr_id)))
         H5TOOLS_GOTO_ERROR((-1), "H5Dget_space failed");
 
@@ -1885,7 +1885,7 @@ done:
     if (f_space >= 0 && H5Sclose(f_space) < 0)
         H5TOOLS_ERROR((-1), "H5Sclose failed");
     CATCH
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -1917,7 +1917,7 @@ h5tools_dump_dset(FILE *stream, const h5tool_format_t *info, h5tools_context_t *
     h5tool_format_t info_dflt;
     int             ret_value = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     /* Use default values */
     if (!stream)
         stream = rawoutstream;
@@ -1969,7 +1969,7 @@ done:
     if (f_space > 0)
         H5Sclose(f_space);
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -1993,7 +1993,7 @@ h5tools_dump_mem(FILE *stream, const h5tool_format_t *info, h5tools_context_t *c
     h5tool_format_t info_dflt;
     int             ret_value = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     /* Use default values */
     if (!stream)
         stream = rawoutstream;
@@ -2039,7 +2039,7 @@ done:
     if (f_space > 0)
         H5Sclose(f_space);
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -2082,7 +2082,7 @@ h5tools_print_datatype(FILE *stream, h5tools_str_t *buffer, const h5tool_format_
     const char *order_s    = NULL; /* byte order string */
     int         ret_value  = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((type_class = H5Tget_class(type)) < 0)
         H5TOOLS_THROW((-1), "H5Tget_class failed");
     if (object_search && H5Tcommitted(type) > 0) {
@@ -2633,7 +2633,7 @@ found_string_type:
     }
 
     CATCH
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -2659,7 +2659,7 @@ h5tools_print_dataspace(h5tools_str_t *buffer, hid_t space)
     int         i;
     int         ret_value = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if ((ndims = H5Sget_simple_extent_dims(space, size, maxsize)) < 0)
         H5TOOLS_THROW((-1), "H5Sget_simple_extent_dims failed");
 
@@ -2713,7 +2713,7 @@ h5tools_print_dataspace(h5tools_str_t *buffer, hid_t space)
     } /* end switch */
 
     CATCH
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -2748,7 +2748,7 @@ h5tools_print_enum(FILE *stream, h5tools_str_t *buffer, const h5tool_format_t *i
     hbool_t        past_catch = FALSE;
     int            ret_value  = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     if (info->line_ncols > 0)
         ncols = info->line_ncols;
 
@@ -2860,7 +2860,7 @@ h5tools_print_enum(FILE *stream, h5tools_str_t *buffer, const h5tool_format_t *i
     if (0 == nmembs)
         h5tools_str_append(buffer, "\n<empty>");
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
     return ret_value;
 }
 
@@ -4043,7 +4043,7 @@ h5tools_dump_reference(FILE *stream, const h5tool_format_t *info, h5tools_contex
     h5tools_str_t     buffer;       /* string into which to render   */
     h5tools_context_t datactx;      /* print context  */
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     datactx = *ctx; /* print context  */
     /* Assume entire data space to be printed */
@@ -4115,7 +4115,7 @@ h5tools_dump_reference(FILE *stream, const h5tool_format_t *info, h5tools_contex
 
     h5tools_str_close(&buffer);
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 }
 
 /*-------------------------------------------------------------------------
@@ -4332,5 +4332,5 @@ done:
     }
 
     h5tools_str_close(&buffer);
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 }
diff --git a/tools/lib/h5tools_str.c b/tools/lib/h5tools_str.c
index 9f76f8e..3102d92 100644
--- a/tools/lib/h5tools_str.c
+++ b/tools/lib/h5tools_str.c
@@ -287,7 +287,7 @@ h5tools_str_prefix(h5tools_str_t *str /*in,out*/, const h5tool_format_t *info, h
 {
     size_t i = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     H5TOOLS_DEBUG("elmtno=%ld, ctx->ndims=%d", elmtno, ctx->ndims);
     h5tools_str_reset(str);
@@ -306,7 +306,7 @@ h5tools_str_prefix(h5tools_str_t *str /*in,out*/, const h5tool_format_t *info, h
         h5tools_str_append(str, OPT(info->idx_n_fmt, HSIZE_T_FORMAT), (hsize_t)elmtno);
     H5TOOLS_DEBUG("str=%s", str->s);
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 
     /* Add prefix and suffix to the index */
     return h5tools_str_fmt(str, (size_t)0, OPT(info->idx_fmt, "%s: "));
@@ -327,7 +327,7 @@ h5tools_str_region_prefix(h5tools_str_t *str /*in,out*/, const h5tool_format_t *
 {
     size_t i = 0;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     H5TOOLS_DEBUG("elmtno=%ld, ctx->ndims=%d", elmtno, ctx->ndims);
     h5tools_str_reset(str);
@@ -347,7 +347,7 @@ h5tools_str_region_prefix(h5tools_str_t *str /*in,out*/, const h5tool_format_t *
         h5tools_str_append(str, OPT(info->idx_n_fmt, HSIZE_T_FORMAT), (hsize_t)0);
     H5TOOLS_DEBUG("str=%s", str->s);
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 
     /* Add prefix and suffix to the index */
     return h5tools_str_fmt(str, (size_t)0, OPT(info->idx_fmt, "%s: "));
@@ -657,7 +657,7 @@ h5tools_str_sprint(h5tools_str_t *str, const h5tool_format_t *info, hid_t contai
     H5T_class_t    type_class;
     char *         ret_value = NULL;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
     /* Build default formats for long long types */
     if (!fmt_llong[0]) {
         HDsnprintf(fmt_llong, sizeof(fmt_llong), "%%%sd", H5_PRINTF_LL_WIDTH);
@@ -1271,7 +1271,7 @@ h5tools_str_sprint_reference(h5tools_str_t *str, hid_t container, void *vp)
     char        ref_name[1024];
     const char *path;
 
-    H5TOOLS_START_DEBUG("");
+    H5TOOLS_START_DEBUG(" ");
 
     h5tools_str_append(str, " \"");
     obj = H5Rdereference2(container, H5P_DEFAULT, H5R_DATASET_REGION, vp);
@@ -1294,7 +1294,7 @@ h5tools_str_sprint_reference(h5tools_str_t *str, hid_t container, void *vp)
     }
     h5tools_str_append(str, "\"");
 
-    H5TOOLS_ENDDEBUG("");
+    H5TOOLS_ENDDEBUG(" ");
 }
 
 /*-------------------------------------------------------------------------