[svn-r22254] Description:

	Bring r22085:22251 from trunk to revise_chunks branch.

	Also tackle some testing issues in test/objcopy.c test and clean up
some warnings.

Tested on:
        FreeBSD/32 8.2 (loyalty) w/gcc4.6, w/C++ & FORTRAN, in debug mode
        FreeBSD/64 8.2 (freedom) w/gcc4.6, w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
                w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-amd64 2.6 (koala) w/Intel compilers, w/default API=1.6.x,
                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                w/szip filter, w/threadsafe, in production mode
        Linux/PPC 2.6 (ostrich) w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-ia64 2.6 (ember) w/Intel compilers, w/paralle, C++ & FORTRAN,
                in production mode
        Mac OS X/32 10.7.3 (amazon) in debug mode
        Mac OS X/32 10.7.3 (amazon) w/C++ & FORTRAN, w/threadsafe,
                in production mode
        Mac OS X/32 10.7.3 (amazon) w/parallel, in debug mode

26 files changed, 370 insertions, 16 deletions

diff --git a/tools/h5diff/CMakeLists.txt b/tools/h5diff/CMakeLists.txt
index f178f19..da2aaf9 100644
--- a/tools/h5diff/CMakeLists.txt
+++ b/tools/h5diff/CMakeLists.txt
@@ -84,6 +84,8 @@ IF (BUILD_TESTING)
       h5diff_220.txt
       h5diff_221.txt
       h5diff_222.txt
+      h5diff_223.txt
+      h5diff_224.txt
       h5diff_21.txt
       h5diff_22.txt
       h5diff_23.txt
@@ -139,6 +141,9 @@ IF (BUILD_TESTING)
       h5diff_482.txt
       h5diff_483.txt
       h5diff_484.txt
+      h5diff_485.txt
+      h5diff_486.txt
+      h5diff_487.txt
       h5diff_50.txt
       h5diff_51.txt
       h5diff_52.txt
@@ -253,6 +258,8 @@ IF (BUILD_TESTING)
       h5diff_exclude1-2.h5
       h5diff_exclude2-1.h5
       h5diff_exclude2-2.h5
+      h5diff_exclude3-1.h5
+      h5diff_exclude3-2.h5
       h5diff_comp_vl_strs.h5
       h5diff_attr_v_level1.h5
       h5diff_attr_v_level2.h5
@@ -490,6 +497,9 @@ IF (BUILD_TESTING)
   # different structure and obj names
   SET (EXCLUDE_FILE2_1 h5diff_exclude2-1.h5)
   SET (EXCLUDE_FILE2_2 h5diff_exclude2-2.h5)
+  # Only one file contains unique objs. Common objs are same.
+  SET (EXCLUDE_FILE3_1 h5diff_exclude3-1.h5)
+  SET (EXCLUDE_FILE3_2 h5diff_exclude3-2.h5)
   # compound type with multiple vlen string types
   SET (COMP_VL_STRS_FILE h5diff_comp_vl_strs.h5)
   # container types (array,vlen) with multiple nested compound types
@@ -569,6 +579,10 @@ IF (BUILD_TESTING)
           h5diff_221.out.err
           h5diff_222.out
           h5diff_222.out.err
+          h5diff_223.out
+          h5diff_223.out.err
+          h5diff_224.out
+          h5diff_224.out.err
           h5diff_21.out
           h5diff_21.out.err
           h5diff_22.out
@@ -1156,6 +1170,12 @@ ADD_H5_TEST (h5diff_221 1 -c non_comparables1.h5 non_comparables2.h5 /g2)
 # All the rest comparables should display differences
 ADD_H5_TEST (h5diff_222 1 -c non_comparables1.h5 non_comparables2.h5)
 
+# non-comparable test for common objects (same name) with different object types
+# (HDFFV-7644)
+ADD_H5_TEST (h5diff_223 0 -c non_comparables1.h5 non_comparables2.h5 /diffobjtypes)
+# swap files
+ADD_H5_TEST (h5diff_224 0 -c non_comparables2.h5 non_comparables1.h5 /diffobjtypes)
+
 # ##############################################################################
 # # Links compare without --follow-symlinks nor --no-dangling-links
 # ##############################################################################
@@ -1359,6 +1379,16 @@ ADD_H5_TEST (h5diff_483 1 -v --exclude-path "/group1" ${EXCLUDE_FILE2_1} ${EXCLU
 # Exclude from group compare
 ADD_H5_TEST (h5diff_484 0 -v --exclude-path "/dset3" ${EXCLUDE_FILE1_1} ${EXCLUDE_FILE1_2} /group1)
 
+#
+# Only one file contains unique objs. Common objs are same.
+# (HDFFV-7837)
+#
+ADD_H5_TEST (h5diff_485 0 -v --exclude-path "/group1" h5diff_exclude3-1.h5 h5diff_exclude3-2.h5)
+ADD_H5_TEST (h5diff_486 0 -v --exclude-path "/group1" h5diff_exclude3-2.h5 h5diff_exclude3-1.h5)
+ADD_H5_TEST (h5diff_487 1 -v --exclude-path "/group1/dset" h5diff_exclude3-1.h5 h5diff_exclude3-2.h5)
+
+
+
 # ##############################################################################
 # # diff various multiple vlen and fixed strings in a compound type dataset
 # ##############################################################################
diff --git a/tools/h5diff/h5diffgentest.c b/tools/h5diff/h5diffgentest.c
index 0b5d68f..eb4931d 100644
--- a/tools/h5diff/h5diffgentest.c
+++ b/tools/h5diff/h5diffgentest.c
@@ -79,6 +79,9 @@ hsize_t H5TOOLS_MALLOCSIZE = (128 * 1024 * 1024);
 /* different structure and obj names */
 #define EXCLUDE_FILE2_1     "h5diff_exclude2-1.h5"
 #define EXCLUDE_FILE2_2     "h5diff_exclude2-2.h5"
+/* only one file has unique objs  */
+#define EXCLUDE_FILE3_1     "h5diff_exclude3-1.h5"
+#define EXCLUDE_FILE3_2     "h5diff_exclude3-2.h5"
 /* compound type with multiple vlen string types */
 #define COMP_VL_STRS_FILE   "h5diff_comp_vl_strs.h5"
 /* attribute compre with verbose level */
@@ -146,6 +149,7 @@ static int test_group_recurse(const char *fname1, const char *fname2);
 static int test_group_recurse2(void);
 static int test_exclude_obj1(const char *fname1, const char *fname2);
 static int test_exclude_obj2(const char *fname1, const char *fname2);
+static int test_exclude_obj3(const char *fname1, const char *fname2);
 static int test_comp_vlen_strings(const char *fname1, const char *grp_name, int is_file_new);
 static int test_attributes_verbose_level(const char *fname1, const char *fname2);
 static int test_enums(const char *fname);
@@ -153,7 +157,8 @@ static void test_comps_array (const char *fname, const char *dset, const char *a
 static void test_comps_vlen (const char *fname, const char *dset,const char *attr, int diff, int is_file_new);
 static void test_comps_array_vlen (const char *fname, const char *dset, const char *attr, int diff, int is_file_new);
 static void test_comps_vlen_arry (const char *fname, const char *dset,const char *attr, int diff, int is_file_new);
-static void test_non_comparables (const char *fname, int diff);
+static void test_data_nocomparables (const char *fname, int diff);
+static void test_objs_nocomparables (const char *fname1, const char *fname2);
 
 /* called by test_attributes() and test_datasets() */
 static void write_attr_in(hid_t loc_id,const char* dset_name,hid_t fid,int make_diffs);
@@ -225,6 +230,7 @@ int main(void)
 
     test_exclude_obj1(EXCLUDE_FILE1_1, EXCLUDE_FILE1_2);
     test_exclude_obj2(EXCLUDE_FILE2_1, EXCLUDE_FILE2_2);
+    test_exclude_obj3(EXCLUDE_FILE3_1, EXCLUDE_FILE3_2);
 
     /* diff various multiple vlen and fixlen string types in a compound dataset */
     test_comp_vlen_strings(COMP_VL_STRS_FILE, "group", 1);
@@ -257,8 +263,11 @@ int main(void)
      * comparable datasets and attributes.  All the comparables should display 
      * differences.
      */
-    test_non_comparables(NON_COMPARBLES1,0);
-    test_non_comparables(NON_COMPARBLES2,5);
+    test_data_nocomparables(NON_COMPARBLES1,0);
+    test_data_nocomparables(NON_COMPARBLES2,5);
+
+    /* common objects (same name) with different object types. HDFFV-7644 */
+    test_objs_nocomparables(NON_COMPARBLES1, NON_COMPARBLES2);
 
     return 0;
 }
@@ -3445,6 +3454,100 @@ out:
 
 /*-------------------------------------------------------------------------
 *
+* Purpose: Create test files for excluding obj.
+*          Only one file contains unique objs. Common objs are same.
+* Test : exclude unique objs to verify the rest are same
+*  - HDFFV-7837
+*
+* Programmer: Jonathan Kim (Mar, 19, 2012)
+*
+*-------------------------------------------------------------------------*/
+static int test_exclude_obj3(const char *fname1, const char *fname2)
+{
+    hid_t   fid1=0;
+    hid_t   fid2=0;
+    hid_t   gid1=0;
+    hsize_t dims2[2] = {2,4};
+    int data1[4][2] = {{0,0},{0,0},{0,0},{0,0}};
+    herr_t  status = SUCCEED;
+
+    /*-----------------------------------------------------------------------
+    * Create file(s)
+    *------------------------------------------------------------------------*/
+    fid1 = H5Fcreate (fname1, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    if (fid1 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Fcreate failed.\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    fid2 = H5Fcreate (fname2, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    if (fid2 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Fcreate failed.\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+
+   /*-----------------------------------------------------------------------
+    * Group
+    *------------------------------------------------------------------------*/
+    /* file1 */
+    gid1 = H5Gcreate2(fid1, "group1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if (gid1 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    /*-----------------------------------------------------------------------
+    * Datasets
+    *------------------------------------------------------------------------*/
+    /* file1 */
+    status = write_dset(fid1,2,dims2,"dset1",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    status = write_dset(gid1,2,dims2,"dset",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    /* file2 */
+    status = write_dset(fid2,2,dims2,"dset1",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+out:
+    /*-----------------------------------------------------------------------
+    * Close
+    *-----------------------------------------------------------------------*/
+    if(fid1)
+        H5Fclose(fid1);
+    if(fid2)
+        H5Fclose(fid2);
+    if(gid1)
+        H5Gclose(gid1);
+
+    return status;
+}
+
+/*-------------------------------------------------------------------------
+*
 * Purpose: Create test files for multiple variable length string/string array
 *          along with fixed length string/string array types in
 *          a compound type dataset.
@@ -4789,7 +4892,7 @@ static void test_comps_vlen_arry (const char * fname, const char *dset, const ch
 
 
 /*-------------------------------------------------------------------------
-* Function: test_non_comparables
+* Function: test_data_nocomparables
 *
 * Purpose: 
 *   Create test files with non-comparable dataset and attributes with 
@@ -4798,7 +4901,7 @@ static void test_comps_vlen_arry (const char * fname, const char *dset, const ch
 *
 *-------------------------------------------------------------------------*/
 #define DIM_ARRY 3
-static void test_non_comparables (const char * fname, int make_diffs)
+static void test_data_nocomparables (const char * fname, int make_diffs)
 {
     hid_t   fid=0;
     hid_t   gid1=0;
@@ -4818,7 +4921,6 @@ static void test_non_comparables (const char * fname, int make_diffs)
     int rank_attr;
     char data1_str[DIM_ARRY][STR_SIZE]= {"ab","cd","ef"};
     herr_t  status = SUCCEED;
-    int i;
     void *dset_data_ptr1=NULL;
     void *dset_data_ptr2=NULL;
     void *dset_data_ptr3=NULL;
@@ -5001,6 +5103,155 @@ out:
 }
 
 /*-------------------------------------------------------------------------
+* Function: test_objs_nocomparables
+*
+* Purpose: 
+*   Create test files with common objects (same name) but different object
+*   types. 
+*   h5diff should show non-comparable output from these common objects.
+*-------------------------------------------------------------------------*/
+static void test_objs_nocomparables(const char *fname1, const char *fname2)
+{
+    herr_t  status = SUCCEED;
+    hid_t   fid1=0;
+    hid_t   fid2=0;
+    hid_t   topgid1=0;
+    hid_t   topgid2=0;
+    hid_t   gid1=0;
+    hid_t   did1=0;
+    hid_t   tid1=0;
+    hid_t   gid2=0;
+    hid_t   did2=0;
+    hid_t   tid2=0;
+    hsize_t dims[1] = {DIM_ARRY};
+    int data1[DIM_ARRY] = {1,1,1};
+    int data2[DIM_ARRY] = {2,2,2};
+
+   /*-----------------------------------------------------------------------
+    * Open file(s) to add objects
+    *------------------------------------------------------------------------*/
+    /* file1 */
+    fid1 = H5Fopen (fname1, H5F_ACC_RDWR, H5P_DEFAULT);
+    if (fid1 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Fopen failed.\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    /* file2 */
+    fid2 = H5Fopen (fname2, H5F_ACC_RDWR, H5P_DEFAULT);
+    if (fid2 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Fopen failed.\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+    /*-----------------------------------------------------------------------
+    * in file1 : add member objects
+    *------------------------------------------------------------------------*/
+    /* parent group */
+    topgid1 = H5Gcreate2(fid1, "diffobjtypes", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if (topgid1 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    /* dataset */
+    status = write_dset(topgid1, 1, dims,"obj1", H5T_NATIVE_INT, data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname1);
+        goto out;
+    }
+
+    /* group */
+    gid1 = H5Gcreate2(topgid1, "obj2", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if (gid1 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    /* committed type */
+    tid1 = H5Tcopy(H5T_NATIVE_INT);
+    status = H5Tcommit2(topgid1, "obj3", tid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if (status < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Tcommit2 failed.\n", fname1);
+        goto out;
+    }
+
+    /*-----------------------------------------------------------------------
+    * in file2 : add member objects
+    *------------------------------------------------------------------------*/
+    /* parent group */
+    topgid2 = H5Gcreate2(fid2, "diffobjtypes", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if (topgid2 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+    /* group */
+    gid2 = H5Gcreate2(topgid2, "obj1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if (gid2 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+    /* committed type */
+    tid2 = H5Tcopy(H5T_NATIVE_INT);
+    status = H5Tcommit2(topgid2, "obj2", tid2, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if (status < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Tcommit2 failed.\n", fname2);
+        goto out;
+    }
+
+    /* dataset */
+    status = write_dset(topgid2, 1, dims,"obj3", H5T_NATIVE_INT, data2);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname2);
+        goto out;
+    }
+
+out:
+    /*-----------------------------------------------------------------------
+    * Close IDs
+    *-----------------------------------------------------------------------*/
+    if(fid1)
+        H5Fclose(fid1);
+    if(fid2)
+        H5Fclose(fid2);
+    if(topgid1)
+        H5Gclose(topgid1);
+    if(topgid2)
+        H5Gclose(topgid2);
+    if(did1)
+        H5Dclose(did1);
+    if(did2)
+        H5Dclose(did2);
+    if(gid1)
+        H5Gclose(gid1);
+    if(gid2)
+        H5Gclose(gid2);
+    if(tid1)
+        H5Tclose(tid1);
+    if(tid2)
+        H5Tclose(tid2);
+
+}
+
+/*-------------------------------------------------------------------------
 * Function: write_attr_in
 *
 * Purpose: write attributes in LOC_ID (dataset, group, named datatype)
diff --git a/tools/h5diff/testfiles/h5diff_101w.txt b/tools/h5diff/testfiles/h5diff_101w.txt
index d1f49da..d1f49da 100755..100644
--- a/tools/h5diff/testfiles/h5diff_101w.txt
+++ b/tools/h5diff/testfiles/h5diff_101w.txt
diff --git a/tools/h5diff/testfiles/h5diff_102w.txt b/tools/h5diff/testfiles/h5diff_102w.txt
index dda3581..dda3581 100755..100644
--- a/tools/h5diff/testfiles/h5diff_102w.txt
+++ b/tools/h5diff/testfiles/h5diff_102w.txt
diff --git a/tools/h5diff/testfiles/h5diff_20.txt b/tools/h5diff/testfiles/h5diff_20.txt
index 3edb543..09c20cb 100644
--- a/tools/h5diff/testfiles/h5diff_20.txt
+++ b/tools/h5diff/testfiles/h5diff_20.txt
@@ -1,4 +1,4 @@
-</dset> is of type H5G_DATASET and </g1> is of type H5G_GROUP
+Not comparable: </dset> is of type H5G_DATASET and </g1> is of type H5G_GROUP
 --------------------------------
 Some objects are not comparable
 --------------------------------
diff --git a/tools/h5diff/testfiles/h5diff_21.txt b/tools/h5diff/testfiles/h5diff_21.txt
index 1479457..1c625fe 100644
--- a/tools/h5diff/testfiles/h5diff_21.txt
+++ b/tools/h5diff/testfiles/h5diff_21.txt
@@ -1,4 +1,4 @@
-</dset> is of type H5G_DATASET and </l1> is of type H5G_LINK
+Not comparable: </dset> is of type H5G_DATASET and </l1> is of type H5G_LINK
 --------------------------------
 Some objects are not comparable
 --------------------------------
diff --git a/tools/h5diff/testfiles/h5diff_22.txt b/tools/h5diff/testfiles/h5diff_22.txt
index 3ccb06b..2ef22d0 100644
--- a/tools/h5diff/testfiles/h5diff_22.txt
+++ b/tools/h5diff/testfiles/h5diff_22.txt
@@ -1,4 +1,4 @@
-</dset> is of type H5G_DATASET and </t1> is of type H5G_TYPE
+Not comparable: </dset> is of type H5G_DATASET and </t1> is of type H5G_TYPE
 --------------------------------
 Some objects are not comparable
 --------------------------------
diff --git a/tools/h5diff/testfiles/h5diff_222.txt b/tools/h5diff/testfiles/h5diff_222.txt
index bdecb8a..53c9464 100644
--- a/tools/h5diff/testfiles/h5diff_222.txt
+++ b/tools/h5diff/testfiles/h5diff_222.txt
@@ -1,3 +1,6 @@
+Not comparable: </diffobjtypes/obj1> is of type H5G_DATASET and </diffobjtypes/obj1> is of type H5G_GROUP
+Not comparable: </diffobjtypes/obj2> is of type H5G_GROUP and </diffobjtypes/obj2> is of type H5G_TYPE
+Not comparable: </diffobjtypes/obj3> is of type H5G_TYPE and </diffobjtypes/obj3> is of type H5G_DATASET
 Not comparable: </g1/dset1> is of class H5T_INTEGER and </g1/dset1> is of class H5T_STRING
 attribute: <attr of </g1/dset1>> and <attr of </g1/dset1>>
 3 differences found
diff --git a/tools/h5diff/testfiles/h5diff_223.txt b/tools/h5diff/testfiles/h5diff_223.txt
new file mode 100644
index 0000000..c8e0f65
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_223.txt
@@ -0,0 +1,4 @@
+Not comparable: </diffobjtypes/obj1> is of type H5G_DATASET and </diffobjtypes/obj1> is of type H5G_GROUP
+Not comparable: </diffobjtypes/obj2> is of type H5G_GROUP and </diffobjtypes/obj2> is of type H5G_TYPE
+Not comparable: </diffobjtypes/obj3> is of type H5G_TYPE and </diffobjtypes/obj3> is of type H5G_DATASET
+EXIT CODE: 0
diff --git a/tools/h5diff/testfiles/h5diff_224.txt b/tools/h5diff/testfiles/h5diff_224.txt
new file mode 100644
index 0000000..a4ebedb
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_224.txt
@@ -0,0 +1,4 @@
+Not comparable: </diffobjtypes/obj1> is of type H5G_GROUP and </diffobjtypes/obj1> is of type H5G_DATASET
+Not comparable: </diffobjtypes/obj2> is of type H5G_TYPE and </diffobjtypes/obj2> is of type H5G_GROUP
+Not comparable: </diffobjtypes/obj3> is of type H5G_DATASET and </diffobjtypes/obj3> is of type H5G_TYPE
+EXIT CODE: 0
diff --git a/tools/h5diff/testfiles/h5diff_300.txt b/tools/h5diff/testfiles/h5diff_300.txt
index e51643f..e51643f 100755..100644
--- a/tools/h5diff/testfiles/h5diff_300.txt
+++ b/tools/h5diff/testfiles/h5diff_300.txt
diff --git a/tools/h5diff/testfiles/h5diff_485.txt b/tools/h5diff/testfiles/h5diff_485.txt
new file mode 100644
index 0000000..4175809
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_485.txt
@@ -0,0 +1,11 @@
+
+file1     file2
+---------------------------------------
+    x      x    /              
+    x      x    /dset1         
+
+group  : </> and </>
+0 differences found
+dataset: </dset1> and </dset1>
+0 differences found
+EXIT CODE: 0
diff --git a/tools/h5diff/testfiles/h5diff_486.txt b/tools/h5diff/testfiles/h5diff_486.txt
new file mode 100644
index 0000000..4175809
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_486.txt
@@ -0,0 +1,11 @@
+
+file1     file2
+---------------------------------------
+    x      x    /              
+    x      x    /dset1         
+
+group  : </> and </>
+0 differences found
+dataset: </dset1> and </dset1>
+0 differences found
+EXIT CODE: 0
diff --git a/tools/h5diff/testfiles/h5diff_487.txt b/tools/h5diff/testfiles/h5diff_487.txt
new file mode 100644
index 0000000..8555a71
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_487.txt
@@ -0,0 +1,12 @@
+
+file1     file2
+---------------------------------------
+    x      x    /              
+    x      x    /dset1         
+    x           /group1        
+
+group  : </> and </>
+0 differences found
+dataset: </dset1> and </dset1>
+0 differences found
+EXIT CODE: 1
diff --git a/tools/h5diff/testfiles/h5diff_505.txt b/tools/h5diff/testfiles/h5diff_505.txt
index a220730..607b99b 100644
--- a/tools/h5diff/testfiles/h5diff_505.txt
+++ b/tools/h5diff/testfiles/h5diff_505.txt
@@ -1,4 +1,4 @@
-</grp1> is of type H5G_GROUP and </slink_grp1> is of type H5G_LINK
+Not comparable: </grp1> is of type H5G_GROUP and </slink_grp1> is of type H5G_LINK
 --------------------------------
 Some objects are not comparable
 --------------------------------
diff --git a/tools/h5diff/testfiles/h5diff_507.txt b/tools/h5diff/testfiles/h5diff_507.txt
index 6176f3f..06b7fe6 100644
--- a/tools/h5diff/testfiles/h5diff_507.txt
+++ b/tools/h5diff/testfiles/h5diff_507.txt
@@ -1,4 +1,4 @@
-</grp1> is of type H5G_GROUP and </elink_grp1> is of type H5G_UDLINK
+Not comparable: </grp1> is of type H5G_GROUP and </elink_grp1> is of type H5G_UDLINK
 --------------------------------
 Some objects are not comparable
 --------------------------------
diff --git a/tools/h5diff/testfiles/h5diff_509.txt b/tools/h5diff/testfiles/h5diff_509.txt
index a51ab35..2e3e87a 100644
--- a/tools/h5diff/testfiles/h5diff_509.txt
+++ b/tools/h5diff/testfiles/h5diff_509.txt
@@ -1,4 +1,4 @@
-</slink_grp1> is of type H5G_LINK and </elink_grp1> is of type H5G_UDLINK
+Not comparable: </slink_grp1> is of type H5G_LINK and </elink_grp1> is of type H5G_UDLINK
 --------------------------------
 Some objects are not comparable
 --------------------------------
diff --git a/tools/h5diff/testfiles/h5diff_515.txt b/tools/h5diff/testfiles/h5diff_515.txt
index 077d463..263441d 100644
--- a/tools/h5diff/testfiles/h5diff_515.txt
+++ b/tools/h5diff/testfiles/h5diff_515.txt
@@ -17,8 +17,11 @@ dataset: </dset1> and </dset1>
 0 differences found
 group  : </g1> and </g1>
 0 differences found
-group  : </g1/g2> and </g1/g2>
-0 differences found
+Not comparable: </g1/g2> is of type H5G_GROUP and </g1/g2> is of type H5G_UDLINK
 link   : </soft_dset1> and </soft_dset1>
 0 differences found
+--------------------------------
+Some objects are not comparable
+--------------------------------
+Use -c for a list of objects without details of differences.
 EXIT CODE: 1
diff --git a/tools/h5diff/testfiles/h5diff_517.txt b/tools/h5diff/testfiles/h5diff_517.txt
index 1b6e24f..91c69fb 100644
--- a/tools/h5diff/testfiles/h5diff_517.txt
+++ b/tools/h5diff/testfiles/h5diff_517.txt
@@ -10,6 +10,9 @@ group1   group2
 
 group  : </g1> and </g1>
 0 differences found
-group  : </g1/g2> and </g1/g2>
-0 differences found
+Not comparable: </g1/g2> is of type H5G_GROUP and </g1/g2> is of type H5G_UDLINK
+--------------------------------
+Some objects are not comparable
+--------------------------------
+Use -c for a list of objects without details of differences.
 EXIT CODE: 1
diff --git a/tools/h5diff/testfiles/h5diff_enum_invalid_values.h5 b/tools/h5diff/testfiles/h5diff_enum_invalid_values.h5
index dd02db9..dd02db9 100755..100644
--- a/tools/h5diff/testfiles/h5diff_enum_invalid_values.h5
+++ b/tools/h5diff/testfiles/h5diff_enum_invalid_values.h5
diff --git a/tools/h5diff/testfiles/h5diff_exclude3-1.h5 b/tools/h5diff/testfiles/h5diff_exclude3-1.h5
new file mode 100644
index 0000000..f9cc83d
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_exclude3-1.h5
diff --git a/tools/h5diff/testfiles/h5diff_exclude3-2.h5 b/tools/h5diff/testfiles/h5diff_exclude3-2.h5
new file mode 100644
index 0000000..f811905
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_exclude3-2.h5
diff --git a/tools/h5diff/testfiles/h5diff_links.h5 b/tools/h5diff/testfiles/h5diff_links.h5
index 8af66a6..8af66a6 100755..100644
--- a/tools/h5diff/testfiles/h5diff_links.h5
+++ b/tools/h5diff/testfiles/h5diff_links.h5
diff --git a/tools/h5diff/testfiles/non_comparables1.h5 b/tools/h5diff/testfiles/non_comparables1.h5
index 71b65c8..7dbb45d 100644
--- a/tools/h5diff/testfiles/non_comparables1.h5
+++ b/tools/h5diff/testfiles/non_comparables1.h5
diff --git a/tools/h5diff/testfiles/non_comparables2.h5 b/tools/h5diff/testfiles/non_comparables2.h5
index 188ceb9..a5e7014 100644
--- a/tools/h5diff/testfiles/non_comparables2.h5
+++ b/tools/h5diff/testfiles/non_comparables2.h5
diff --git a/tools/h5diff/testh5diff.sh b/tools/h5diff/testh5diff.sh
index 005510f..c84c2b6 100755
--- a/tools/h5diff/testh5diff.sh
+++ b/tools/h5diff/testh5diff.sh
@@ -113,6 +113,8 @@ $SRC_H5DIFF_TESTFILES/h5diff_exclude1-1.h5
 $SRC_H5DIFF_TESTFILES/h5diff_exclude1-2.h5
 $SRC_H5DIFF_TESTFILES/h5diff_exclude2-1.h5
 $SRC_H5DIFF_TESTFILES/h5diff_exclude2-2.h5
+$SRC_H5DIFF_TESTFILES/h5diff_exclude3-1.h5
+$SRC_H5DIFF_TESTFILES/h5diff_exclude3-2.h5
 $SRC_H5DIFF_TESTFILES/h5diff_comp_vl_strs.h5
 $SRC_H5DIFF_TESTFILES/compounds_array_vlen1.h5
 $SRC_H5DIFF_TESTFILES/compounds_array_vlen2.h5
@@ -156,6 +158,8 @@ $SRC_H5DIFF_TESTFILES/h5diff_208.txt
 $SRC_H5DIFF_TESTFILES/h5diff_220.txt
 $SRC_H5DIFF_TESTFILES/h5diff_221.txt
 $SRC_H5DIFF_TESTFILES/h5diff_222.txt
+$SRC_H5DIFF_TESTFILES/h5diff_223.txt
+$SRC_H5DIFF_TESTFILES/h5diff_224.txt
 $SRC_H5DIFF_TESTFILES/h5diff_21.txt
 $SRC_H5DIFF_TESTFILES/h5diff_22.txt
 $SRC_H5DIFF_TESTFILES/h5diff_23.txt
@@ -212,6 +216,9 @@ $SRC_H5DIFF_TESTFILES/h5diff_481.txt
 $SRC_H5DIFF_TESTFILES/h5diff_482.txt
 $SRC_H5DIFF_TESTFILES/h5diff_483.txt
 $SRC_H5DIFF_TESTFILES/h5diff_484.txt
+$SRC_H5DIFF_TESTFILES/h5diff_485.txt
+$SRC_H5DIFF_TESTFILES/h5diff_486.txt
+$SRC_H5DIFF_TESTFILES/h5diff_487.txt
 $SRC_H5DIFF_TESTFILES/h5diff_50.txt
 $SRC_H5DIFF_TESTFILES/h5diff_51.txt
 $SRC_H5DIFF_TESTFILES/h5diff_52.txt
@@ -824,6 +831,12 @@ if test -n "$pmode" -a "$mydomainname" = hdfgroup.uiuc.edu; then
 else
     TOOLTEST h5diff_222.txt -c non_comparables1.h5 non_comparables2.h5
 fi    
+
+# non-comparable test for common objects (same name) with different object types
+# (HDFFV-7644)
+TOOLTEST h5diff_223.txt -c non_comparables1.h5 non_comparables2.h5 /diffobjtypes
+# swap files
+TOOLTEST h5diff_224.txt -c non_comparables2.h5 non_comparables1.h5 /diffobjtypes
     
 # ##############################################################################
 # # Links compare without --follow-symlinks nor --no-dangling-links
@@ -1035,6 +1048,15 @@ TOOLTEST h5diff_483.txt -v --exclude-path "/group1" h5diff_exclude2-1.h5 h5diff_
 # Exclude from group compare
 TOOLTEST h5diff_484.txt -v --exclude-path "/dset3" h5diff_exclude1-1.h5 h5diff_exclude1-2.h5 /group1
 
+#
+# Only one file contains unique objs. Common objs are same.
+# (HDFFV-7837)
+#
+TOOLTEST h5diff_485.txt -v --exclude-path "/group1" h5diff_exclude3-1.h5 h5diff_exclude3-2.h5
+TOOLTEST h5diff_486.txt -v --exclude-path "/group1" h5diff_exclude3-2.h5 h5diff_exclude3-1.h5
+TOOLTEST h5diff_487.txt -v --exclude-path "/group1/dset" h5diff_exclude3-1.h5 h5diff_exclude3-2.h5
+
+
 # ##############################################################################
 # # diff various multiple vlen and fixed strings in a compound type dataset
 # ##############################################################################