[svn-r20724] Purpose: Fix a bug in h5diff when enum values are compared that do

         not represent a valid enum value.

Description:
The h5diff code compares enum values by converting them to strings and
then comparing them.  When the enum value is out of range and can't be
converted to an enum string representation, the comparison was skipped.

The code now flags differences when one of the two enum values is out
of range (two out of range values are compared in memory).  A test has
been added to the tools test script.

This fixes JIRA HDFFV-7527

Tested on: jam, koala, heiwa (h5committest)

1 files changed, 81 insertions, 0 deletions

diff --git a/tools/h5diff/h5diffgentest.c b/tools/h5diff/h5diffgentest.c
index 3ef01a0..43b1a37 100644
--- a/tools/h5diff/h5diffgentest.c
+++ b/tools/h5diff/h5diffgentest.c
@@ -75,6 +75,8 @@
 /* attribute compre with verbose level */
 #define ATTR_VERBOSE_LEVEL_FILE1 "h5diff_attr_v_level1.h5"
 #define ATTR_VERBOSE_LEVEL_FILE2 "h5diff_attr_v_level2.h5"
+/* file containing valid/invalid enum value mix */
+#define ENUM_INVALID_VALUES "h5diff_enum_invalid_values.h5"
 
 #define UIMAX    4294967295u /*Maximum value for a variable of type unsigned int */
 #define STR_SIZE 3
@@ -131,6 +133,7 @@ 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_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);
 
 /* 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);
@@ -197,6 +200,13 @@ int main(void)
     test_comp_vlen_strings(COMP_VL_STRS_FILE, "group", 1);
     test_comp_vlen_strings(COMP_VL_STRS_FILE, "group_copy", 0);
 
+    /* diff when invalid enum values are present.
+     * This will probably grow to involve more extensive testing of
+     * enums so it has been given its own test file and test (apart
+     * from the basic type testing).
+     */
+    test_enums(ENUM_INVALID_VALUES);
+
     return 0;
 }
 
@@ -4021,6 +4031,77 @@ out:
     return status;
 }
 
+
+/*-------------------------------------------------------------------------
+*
+* Purpose: Test diffs of enum values which may include invalid values.
+*
+* Programmer: Dana Robinson
+*
+*-------------------------------------------------------------------------*/
+
+static int
+test_enums(const char *fname)
+{
+    hid_t       fid  = -1;
+
+    hid_t       tid       = -1;
+    int         enum_val  = -1;
+
+    /* The data in the two arrays cover the following cases:
+     *   
+     *   V = valid enum value, I = invalid enum value
+     *
+     *   0:  I-I (same value)
+     *   1:  V-I
+     *   2:  I-V
+     *   3:  V-V (same value)
+     *   4:  I-I (different values)
+     *   5:  V-V (different values)
+     */
+    int         data1[6] = {9, 0, 9, 0, 8, 0};
+    int         data2[6] = {9, 9, 0, 0, 9, 1};
+
+    hsize_t     dims = 6;
+
+    herr_t      status = SUCCEED;
+
+    /*-----------------------------------------------------------------------
+     * Create the file
+     *---------------------------------------------------------------------*/
+
+    fid = H5Fcreate(fname, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /*-----------------------------------------------------------------------
+     * Create enum types
+     *---------------------------------------------------------------------*/
+ 
+    tid = H5Tenum_create(H5T_NATIVE_INT);
+    enum_val = 0;
+    status = H5Tenum_insert(tid, "YIN", &enum_val);
+    enum_val = 1;
+    status = H5Tenum_insert(tid, "YANG", &enum_val);
+
+    /*-----------------------------------------------------------------------
+     * Create datasets containing enum data.
+     *---------------------------------------------------------------------*/
+ 
+    status = write_dset(fid, 1, &dims, "dset1", tid, data1);
+    status = write_dset(fid, 1, &dims, "dset2", tid, data2);
+
+out:
+    /*-----------------------------------------------------------------------
+     * Close
+     *---------------------------------------------------------------------*/
+    if(fid)
+        H5Fclose(fid);
+    if(tid)
+        H5Tclose(tid);
+    
+    return status;
+}
+
+
 /*-------------------------------------------------------------------------
 * Function: write_attr_in
 *