[svn-r25642] merged changes 25614,25629,25631 into branch.

5 files changed, 396 insertions, 31 deletions

diff --git a/hl/src/H5DS.c b/hl/src/H5DS.c
index a743e90..1f0f678 100644
--- a/hl/src/H5DS.c
+++ b/hl/src/H5DS.c
@@ -1444,6 +1444,9 @@ herr_t H5DSset_label(hid_t did, unsigned int idx, const char *label)
     if (H5I_DATASET != it)
         return FAIL;
 
+    if (label == NULL) 
+        return FAIL;
+
      /* get dataset space */
     if ((sid = H5Dget_space(did)) < 0)
         return FAIL;
@@ -1912,11 +1915,12 @@ out:
 htri_t H5DSis_scale(hid_t did)
 {
     hid_t      tid = -1;   /* attribute type ID */
-    hid_t      aid;        /* attribute ID */
+    hid_t      aid = -1;   /* attribute ID */
     herr_t     has_class;  /* has the "CLASS" attribute */
     htri_t     is_ds;      /* boolean return value */
     H5I_type_t it;           /* ID type */
-    char       buf[20];
+    char       *buf;         /* Name of attribute */
+    hsize_t    storage_size; /* Size of storage for attribute */
 
     /*-------------------------------------------------------------------------
     * parameter checking
@@ -1944,19 +1948,41 @@ htri_t H5DSis_scale(hid_t did)
         if((tid = H5Aget_type(aid)) < 0)
             goto out;
 
+	/* check to make sure attribute is a string */
+	if(H5T_STRING != H5Tget_class(tid))
+	    goto out;
+
+	/* check to make sure string is null-terminated */
+	if(H5T_STR_NULLTERM != H5Tget_strpad(tid))
+	    goto out;
+
+	/* allocate buffer large enough to hold string */
+	if((storage_size = H5Aget_storage_size(aid)) == 0)
+	    goto out;
+
+	buf = (char*)HDmalloc( (size_t)storage_size * sizeof(char) + 1);
+	if(buf == NULL)
+	    goto out;
+
+	/* Read the attribute */
         if(H5Aread(aid, tid, buf) < 0)
-            goto out;
+	    goto out;
 
-        if(strcmp(buf, DIMENSION_SCALE_CLASS)==0)
+	/* compare strings */
+        if(HDstrncmp(buf, DIMENSION_SCALE_CLASS, MIN(HDstrlen(DIMENSION_SCALE_CLASS),HDstrlen(buf)))==0)
             is_ds = 1;
         else
             is_ds = 0;
 
+	HDfree(buf);
+
         if(H5Tclose(tid) < 0)
             goto out;
 
         if (H5Aclose(aid) < 0)
             goto out;
+
+
     }
 
     return is_ds;
@@ -2118,7 +2144,8 @@ herr_t H5DS_is_reserved(hid_t did)
     int    has_class;
     hid_t  tid = -1;
     hid_t  aid = -1;
-    char   buf[40];
+    char *buf;            /* Name of attribute */
+    hsize_t storage_size; /* Size of storage for attribute */
     herr_t ret;
 
     /* try to find the attribute "CLASS" on the dataset */
@@ -2135,16 +2162,36 @@ herr_t H5DS_is_reserved(hid_t did)
     if((tid = H5Aget_type(aid)) < 0)
         goto out;
 
+    /* check to make sure attribute is a string */
+    if(H5T_STRING != H5Tget_class(tid))
+      goto out;
+
+    /* check to make sure string is null-terminated */
+    if(H5T_STR_NULLTERM != H5Tget_strpad(tid))
+      goto out;
+
+    /* allocate buffer large enough to hold string */
+    if((storage_size = H5Aget_storage_size(aid)) == 0)
+      goto out;
+
+    buf = (char*)HDmalloc( (size_t)storage_size * sizeof(char) + 1);
+    if(buf == NULL)
+      goto out;
+
+    /* Read the attribute */
     if(H5Aread(aid, tid, buf) < 0)
-        goto out;
+      goto out;
+
 
-    if(strcmp(buf, IMAGE_CLASS) == 0 ||
-        strcmp(buf, PALETTE_CLASS) == 0 ||
-        strcmp(buf, TABLE_CLASS) == 0 )
+    if(HDstrncmp(buf, IMAGE_CLASS, MIN(HDstrlen(IMAGE_CLASS),HDstrlen(buf))) == 0 ||
+       HDstrncmp(buf, PALETTE_CLASS, MIN(HDstrlen(PALETTE_CLASS),HDstrlen(buf))) == 0 ||
+       HDstrncmp(buf, TABLE_CLASS, MIN(HDstrlen(TABLE_CLASS),HDstrlen(buf))) == 0 )
         ret = 1;
     else
         ret = 0;
 
+    HDfree(buf);
+
     if (H5Tclose(tid) < 0)
         goto out;
 
diff --git a/hl/src/H5IM.c b/hl/src/H5IM.c
index 0781e48..33b2dd4 100644
--- a/hl/src/H5IM.c
+++ b/hl/src/H5IM.c
@@ -46,6 +46,10 @@ herr_t H5IMmake_image_8bit( hid_t loc_id,
 {
     hsize_t  dims[IMAGE8_RANK];
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        return -1;
+
     /* Initialize the image dimensions */
     dims[0] = height;
     dims[1] = width;
@@ -103,9 +107,16 @@ herr_t H5IMmake_image_24bit( hid_t loc_id,
 {
     hsize_t  dims[IMAGE24_RANK];
 
+    /* check the arguments */
+    if (interlace == NULL) 
+        return -1;
+    if (dset_name == NULL) 
+        return -1;
+
+
     /* Initialize the image dimensions */
 
-    if ( strcmp( interlace, "INTERLACE_PIXEL" ) == 0 )
+    if ( HDstrncmp( interlace, "INTERLACE_PIXEL",15 ) == 0 )
     {
         /* Number of color planes is defined as the third dimension */
         dims[0] = height;
@@ -113,7 +124,7 @@ herr_t H5IMmake_image_24bit( hid_t loc_id,
         dims[2] = IMAGE24_RANK;
     }
     else
-        if ( strcmp( interlace, "INTERLACE_PLANE" ) == 0 )
+      if ( HDstrncmp( interlace, "INTERLACE_PLANE",15 ) == 0 )
         {
             /* Number of color planes is defined as the first dimension */
             dims[0] = IMAGE24_RANK;
@@ -172,6 +183,10 @@ static herr_t find_palette(hid_t loc_id,
 {
     int ret = H5_ITER_CONT;
 
+    /* check the arguments */
+    if (name == NULL) 
+        return -1;
+
     /* Shut compiler up */
     loc_id = loc_id; ainfo = ainfo; op_data = op_data;
 
@@ -179,7 +194,7 @@ static herr_t find_palette(hid_t loc_id,
     * cause the iterator to immediately return that positive value,
     * indicating short-circuit success
     */
-    if(strcmp(name, "PALETTE") == 0)
+    if(HDstrncmp(name, "PALETTE",7) == 0)
         ret = H5_ITER_STOP;
 
     return ret;
@@ -250,6 +265,12 @@ herr_t H5IMget_image_info( hid_t loc_id,
     int         has_pal;
     int         has_attr;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+    if (interlace == NULL) 
+      return -1;
+
     /*assume initially we have no palettes attached*/
     *npals = 0;
 
@@ -294,7 +315,7 @@ herr_t H5IMget_image_info( hid_t loc_id,
         /* This is a 24 bit image */
     {
 
-        if ( strcmp( interlace, "INTERLACE_PIXEL" ) == 0 )
+      if ( HDstrncmp( interlace, "INTERLACE_PIXEL", 15 ) == 0 )
         {
             /* Number of color planes is defined as the third dimension */
             *height = dims[0];
@@ -302,14 +323,14 @@ herr_t H5IMget_image_info( hid_t loc_id,
             *planes = dims[2];
         }
         else
-            if ( strcmp( interlace, "INTERLACE_PLANE" ) == 0 )
+	  if ( HDstrncmp( interlace, "INTERLACE_PLANE", 15 ) == 0 )
             {
                 /* Number of color planes is defined as the first dimension */
                 *planes = dims[0];
                 *height = dims[1];
                 *width  = dims[2];
             }
-            else return -1;
+	  else return -1;
     }
     else
         /* This is a 8 bit image */
@@ -410,6 +431,10 @@ herr_t H5IMread_image( hid_t loc_id,
 {
     hid_t   did;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+
     /* Open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -460,6 +485,10 @@ herr_t H5IMmake_palette( hid_t loc_id,
 
     int has_pal;
 
+    /* check the arguments */
+    if (pal_name == NULL) 
+      return -1;
+
     /* Check if the dataset already exists */
     has_pal = H5LTfind_dataset( loc_id, pal_name );
 
@@ -523,6 +552,13 @@ herr_t H5IMlink_palette( hid_t loc_id,
     hsize_t     dim_ref;
     int         ok_pal;
 
+    
+    /* check the arguments */
+    if (image_name == NULL) 
+      return -1;
+    if (pal_name == NULL) 
+      return -1;
+
     /* The image dataset may or may not have the attribute "PALETTE"
     * First we try to open to see if it is already there; if not, it is created.
     * If it exists, the array of references is extended to hold the reference
@@ -685,6 +721,12 @@ herr_t H5IMunlink_palette( hid_t loc_id,
     H5T_class_t aclass;
     int         ok_pal, has_pal;
 
+    /* check the arguments */
+    if(image_name == NULL) 
+      return -1;
+    if(pal_name == NULL) 
+      return -1;
+
     /* Try to find the palette dataset */
     has_pal = H5LTfind_dataset( loc_id, pal_name );
 
@@ -780,6 +822,10 @@ herr_t H5IMget_npalettes( hid_t loc_id,
     H5T_class_t aclass;
     int         has_pal;
 
+    /* check the arguments */
+    if(image_name == NULL) 
+      return -1;
+
     /*assume initially we have no palettes attached*/
     *npals = 0;
 
@@ -875,6 +921,10 @@ herr_t H5IMget_palette_info( hid_t loc_id,
     hid_t      pal_space_id;
     hsize_t    pal_maxdims[2];
 
+    /* check the arguments */
+    if (image_name == NULL) 
+      return -1;
+
     /* Open the dataset. */
     if((did = H5Dopen2(loc_id, image_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -986,6 +1036,13 @@ herr_t H5IMget_palette( hid_t loc_id,
     hobj_ref_t *refbuf;     /* buffer to read references */
     hid_t      pal_id;
 
+    /* check the arguments */
+    if (image_name == NULL) 
+      return -1;
+    if (pal_data == NULL) 
+      return -1;
+
+
     /* Open the dataset. */
     if((did = H5Dopen2(loc_id, image_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -1078,10 +1135,15 @@ herr_t H5IMis_image( hid_t loc_id,
     hid_t      did;
     int        has_class;
     hid_t      atid;
-    hid_t      aid;
-    char       attr_data[20];
+    hid_t      aid = -1;
+    char*      attr_data;    /* Name of attribute */
+    hsize_t    storage_size; /* Size of storage for attribute */
     herr_t     ret;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+
     /* Assume initially fail condition */
     ret = -1;
 
@@ -1106,17 +1168,32 @@ herr_t H5IMis_image( hid_t loc_id,
         if((atid = H5Aget_type(aid)) < 0)
             goto out;
 
-        if(H5Tget_class(atid) < 0)
-            goto out;
+	/* check to make sure attribute is a string */
+	if(H5T_STRING != H5Tget_class(atid))
+	    goto out;
+
+	/* check to make sure string is null-terminated */
+	if(H5T_STR_NULLTERM != H5Tget_strpad(atid))
+	    goto out;
+
+	/* allocate buffer large enough to hold string */
+	if((storage_size = H5Aget_storage_size(aid)) == 0)
+	    goto out;
+
+	attr_data = (char*)HDmalloc( (size_t)storage_size * sizeof(char) + 1);
+	if(attr_data == NULL)
+	    goto out;
 
         if(H5Aread(aid, atid, attr_data) < 0)
             goto out;
 
-        if(strcmp(attr_data, IMAGE_CLASS) == 0)
+        if(HDstrncmp(attr_data, IMAGE_CLASS, MIN(HDstrlen(IMAGE_CLASS),HDstrlen(attr_data))) == 0)
             ret = 1;
         else
             ret = 0;
 
+	HDfree(attr_data);
+
         if ( H5Tclose( atid ) < 0)
             goto out;
 
@@ -1163,10 +1240,15 @@ herr_t H5IMis_palette( hid_t loc_id,
     hid_t      did;
     int        has_class;
     hid_t      atid;
-    hid_t      aid;
-    char       attr_data[20];
+    hid_t      aid = -1;
+    char*      attr_data;    /* Name of attribute */
+    hsize_t    storage_size; /* Size of storage for attribute */
     herr_t     ret;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+
     /* Assume initially fail condition */
     ret = -1;
 
@@ -1191,17 +1273,32 @@ herr_t H5IMis_palette( hid_t loc_id,
         if((atid = H5Aget_type(aid)) < 0)
             goto out;
 
-        if(H5Tget_class(atid) < 0)
-            goto out;
+	/* check to make sure attribute is a string */
+	if(H5T_STRING != H5Tget_class(atid))
+	    goto out;
+
+	/* check to make sure string is null-terminated */
+	if(H5T_STR_NULLTERM != H5Tget_strpad(atid))
+	    goto out;
+
+	/* allocate buffer large enough to hold string */
+	if((storage_size = H5Aget_storage_size(aid)) == 0)
+	    goto out;
+
+	attr_data = (char*)HDmalloc( (size_t)storage_size * sizeof(char) + 1);
+	if(attr_data == NULL)
+	    goto out;
 
         if(H5Aread(aid, atid, attr_data) < 0)
             goto out;
 
-        if(strcmp(attr_data, PALETTE_CLASS) == 0)
+        if(HDstrncmp(attr_data, PALETTE_CLASS, MIN(HDstrlen(PALETTE_CLASS),HDstrlen(attr_data))) == 0)
             ret = 1;
         else
             ret = 0;
 
+	HDfree(attr_data);
+
         if ( H5Tclose( atid ) < 0)
             goto out;
 
diff --git a/hl/src/H5LT.c b/hl/src/H5LT.c
index 6da097c..071b8a5 100644
--- a/hl/src/H5LT.c
+++ b/hl/src/H5LT.c
@@ -524,6 +524,10 @@ H5LT_make_dataset_numerical( hid_t loc_id,
 {
     hid_t   did = -1, sid = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+
     /* Create the data space for the dataset. */
     if((sid = H5Screate_simple(rank, dims, NULL)) < 0)
         return -1;
@@ -799,6 +803,10 @@ herr_t H5LTmake_dataset_string(hid_t loc_id,
     hid_t   tid = -1;
     size_t  size;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+
     /* create a string data type */
     if((tid = H5Tcopy(H5T_C_S1)) < 0 )
         goto out;
@@ -977,6 +985,10 @@ H5LT_read_dataset_numerical(hid_t loc_id, const char *dset_name, hid_t tid, void
 {
     hid_t   did;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+
     /* Open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -1168,6 +1180,10 @@ herr_t H5LTread_dataset_string( hid_t loc_id,
     hid_t   did = -1;
     hid_t   tid = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+
     /* Open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -1217,6 +1233,10 @@ herr_t H5LTget_dataset_ndims( hid_t loc_id,
     hid_t       did = -1;
     hid_t       sid = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+
     /* Open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -1273,6 +1293,10 @@ herr_t H5LTget_dataset_info( hid_t loc_id,
     hid_t       tid = -1;
     hid_t       sid = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+      return -1;
+
     /* open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -1346,6 +1370,10 @@ find_dataset(hid_t loc_id, const char *name, const H5L_info_t *linfo, void *op_d
     */
     int ret = 0;
 
+    /* check the arguments */
+    if (name == NULL) 
+      return ret;
+    
     /* Shut the compiler up */
     loc_id = loc_id;
     linfo = linfo;
@@ -1354,7 +1382,7 @@ find_dataset(hid_t loc_id, const char *name, const H5L_info_t *linfo, void *op_d
     * cause the iterator to immediately return that positive value,
     * indicating short-circuit success
     */
-    if(HDstrcmp(name, (char *)op_data) == 0)
+    if(HDstrncmp(name, (char *)op_data, HDstrlen((char *)op_data)) == 0)
         ret = 1;
 
     return ret;
@@ -1429,6 +1457,14 @@ herr_t H5LTset_attribute_string( hid_t loc_id,
     int        has_attr;
     size_t     attr_size;
 
+    /* check the arguments */
+    if (obj_name == NULL) 
+      return -1;
+    if (attr_name == NULL) 
+      return -1;
+    if (attr_data == NULL) 
+      return -1;
+
     /* Open the object */
     if ((obj_id = H5Oopen(loc_id, obj_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -1518,6 +1554,12 @@ herr_t H5LT_set_attribute_numerical( hid_t loc_id,
     hsize_t    dim_size=size;
     int        has_attr;
 
+    /* check the arguments */
+    if (obj_name == NULL) 
+      return -1;
+    if (attr_name == NULL) 
+      return -1;
+
     /* Open the object */
     if ((obj_id = H5Oopen(loc_id, obj_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -1929,6 +1971,10 @@ find_attr(hid_t loc_id, const char *name, const H5A_info_t *ainfo,
 {
     int ret = H5_ITER_CONT;
 
+    /* check the arguments */
+    if (name == NULL) 
+      return H5_ITER_CONT;
+
     /* Shut compiler up */
     loc_id = loc_id; ainfo = ainfo;
 
@@ -1936,7 +1982,7 @@ find_attr(hid_t loc_id, const char *name, const H5A_info_t *ainfo,
     * cause the iterator to immediately return that positive value,
     * indicating short-circuit success
     */
-    if(HDstrcmp(name, (char *)op_data) == 0)
+    if(HDstrncmp(name, (char *)op_data, HDstrlen((char *)op_data)) == 0)
         ret = H5_ITER_STOP;
 
     return ret;
@@ -2021,6 +2067,12 @@ herr_t H5LTget_attribute_ndims( hid_t loc_id,
     hid_t       sid;
     hid_t       obj_id;
 
+    /* check the arguments */
+    if (obj_name == NULL) 
+      return -1;
+    if (attr_name == NULL) 
+      return -1;
+
     /* Open the object */
     if((obj_id = H5Oopen(loc_id, obj_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -2088,6 +2140,12 @@ herr_t H5LTget_attribute_info( hid_t loc_id,
     hid_t       sid;
     hid_t       obj_id;
 
+    /* check the arguments */
+    if (obj_name == NULL) 
+      return -1;
+    if (attr_name == NULL) 
+      return -1;
+
     /* Open the object */
     if((obj_id = H5Oopen(loc_id, obj_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -2163,6 +2221,10 @@ hid_t H5LTtext_to_dtype(const char *text, H5LT_lang_t lang_type)
 {
     hid_t   type_id;
 
+    /* check the arguments */
+    if (text == NULL) 
+      return -1;
+
     if(lang_type <= H5LT_LANG_ERR || lang_type >= H5LT_NO_LANG)
         goto out;
 
@@ -2206,6 +2268,8 @@ out:
 static char* 
 realloc_and_append(hbool_t _no_user_buf, size_t *len, char *buf, char *str_to_add)
 {
+    size_t size_str_to_add, size_str;
+
     if(_no_user_buf) {
         /* If the buffer isn't big enough, reallocate it.  Otherwise, go to do strcat. */
         if(str_to_add && ((ssize_t)(*len - (HDstrlen(buf) + HDstrlen(str_to_add) + 1)) < LIMIT)) {
@@ -2220,8 +2284,25 @@ realloc_and_append(hbool_t _no_user_buf, size_t *len, char *buf, char *str_to_ad
     if(!buf)
         goto out;
 
-    if(str_to_add)
-        HDstrcat(buf, str_to_add);
+    if(str_to_add) {
+      /* find the size of the buffer to add */
+      size_str_to_add = HDstrlen(str_to_add);
+      /* find the size of the current buffer */
+      size_str = HDstrlen(buf);
+
+      /* Check to make sure the appended string does not 
+       * extend past the allocated buffer; if it does then truncate the string
+       */
+      if(size_str < *len - 1) {
+	if( size_str + size_str_to_add < *len - 1) {
+	  HDstrncat(buf, str_to_add, size_str_to_add);
+	} else {
+	  HDstrncat(buf, str_to_add, (*len - 1) - size_str);
+	}
+      } else {
+	buf[*len-1] = '\0'; /* buffer is full, null terminate */
+      }
+    }
 
     return buf;
 
@@ -3020,6 +3101,12 @@ herr_t H5LTget_attribute_string( hid_t loc_id,
     /* identifiers */
     hid_t      obj_id;
 
+    /* check the arguments */
+    if (obj_name == NULL) 
+      return -1;
+    if (attr_name == NULL) 
+      return -1;
+
     /* Open the object */
     if ((obj_id = H5Oopen( loc_id, obj_name, H5P_DEFAULT)) < 0)
         return -1;
@@ -3440,6 +3527,12 @@ static herr_t H5LT_get_attribute_mem(hid_t loc_id,
     hid_t obj_id = -1;
     hid_t attr_id = -1;
 
+    /* check the arguments */
+    if (obj_name == NULL) 
+      return -1;
+    if (attr_name == NULL) 
+      return -1;
+
     /* Open the object */
     if((obj_id = H5Oopen(loc_id, obj_name, H5P_DEFAULT)) < 0)
         goto out;
@@ -3619,6 +3712,12 @@ H5LTpath_valid(hid_t loc_id, const char *path, hbool_t check_object_valid)
      /* Initialize */
      ret_value = FALSE;
 
+     /* check the arguments */
+     if (path == NULL) {
+       ret_value = FAIL;
+       goto done;
+     }
+
      /* Find the type of loc_id */
      if((obj_type = H5Iget_type(loc_id)) == H5I_BADID) {
        ret_value = FAIL;
diff --git a/hl/src/H5PT.c b/hl/src/H5PT.c
index d3a03cd..7a0bc20 100644
--- a/hl/src/H5PT.c
+++ b/hl/src/H5PT.c
@@ -84,6 +84,11 @@ hid_t H5PTcreate_fl ( hid_t loc_id,
   hsize_t maxdims[1];
   hid_t ret_value;
 
+  /* check the arguments */
+  if (dset_name == NULL) {
+    goto out;
+  }
+
   /* Register the packet table ID type if this is the first table created */
   if(H5PT_ptable_id_type < 0)
     if((H5PT_ptable_id_type = H5Iregister_type((size_t)H5PT_HASH_TABLE_SIZE, 0, (H5I_free_t)H5PT_free_id)) < 0)
@@ -178,6 +183,11 @@ hid_t H5PTcreate_vl ( hid_t loc_id,
   hid_t ret_value=H5I_BADID;
   hid_t vltype;
 
+  /* check the arguments */
+  if (dset_name == NULL) {
+    goto out;
+  }
+
   /* Create a variable length type that uses single bytes as its base type */
   vltype = H5Tvlen_create(H5T_NATIVE_UCHAR);
   if(vltype < 0)
@@ -232,6 +242,11 @@ hid_t H5PTopen( hid_t loc_id,
   hid_t ret_value;
   hsize_t dims[1];
 
+  /* check the arguments */
+  if (dset_name == NULL) {
+    goto out;
+  }
+
   /* Register the packet table ID type if this is the first table created */
   if( H5PT_ptable_id_type < 0)
     if((H5PT_ptable_id_type = H5Iregister_type((size_t)H5PT_HASH_TABLE_SIZE, 0, (H5I_free_t)H5PT_free_id)) < 0)
diff --git a/hl/src/H5TB.c b/hl/src/H5TB.c
index a1456ea..1ca41a8 100644
--- a/hl/src/H5TB.c
+++ b/hl/src/H5TB.c
@@ -94,6 +94,17 @@ herr_t H5TBmake_table(const char *table_title,
     hsize_t i;
     herr_t  ret_val = -1;
 
+    /* check the arguments */
+    if (table_title == NULL) {
+      goto out;
+    }
+    if (dset_name == NULL) {
+      goto out;
+    }
+    if (field_names == NULL) {
+      goto out;
+    }
+    
     dims[0]       = nrecords;
     dims_chunk[0] = chunk_size;
 
@@ -290,6 +301,10 @@ herr_t H5TBappend_records(hid_t loc_id,
     hsize_t  nfields;
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /* get the original number of records and fields  */
     if(H5TBget_table_info(loc_id, dset_name, &nfields, &nrecords_orig) < 0)
         goto out;
@@ -360,6 +375,10 @@ herr_t H5TBwrite_records(hid_t loc_id,
     hsize_t  dims[1];
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /* open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         goto out;
@@ -459,6 +478,12 @@ herr_t H5TBwrite_fields_name(hid_t loc_id,
     size_t   size_native;
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+    if (field_names == NULL) 
+        goto out;
+
     /* create xfer properties to preserve initialized data */
     if((preserve_id = H5Pcreate(H5P_DATASET_XFER)) < 0)
         goto out;
@@ -616,6 +641,10 @@ herr_t H5TBwrite_fields_index(hid_t loc_id,
     char    *member_name = NULL;
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /* create xfer properties to preserve initialized data */
     if((preserve_id = H5Pcreate(H5P_DATASET_XFER)) < 0)
         goto out;
@@ -773,6 +802,10 @@ herr_t H5TBread_table(hid_t loc_id,
     hsize_t  dims[1];
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /* open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         goto out;
@@ -846,6 +879,10 @@ herr_t H5TBread_records(hid_t loc_id,
     hsize_t  nfields;
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /* get the number of records and fields  */
     if(H5TBget_table_info(loc_id, dset_name, &nfields, &nrecords_orig) < 0)
         goto out;
@@ -922,6 +959,13 @@ herr_t H5TBread_fields_name(hid_t loc_id,
     hssize_t i, j;
     herr_t   ret_val = -1;
 
+
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+    if (field_names == NULL) 
+        goto out;
+
     /* open the dataset */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         goto out;
@@ -938,7 +982,7 @@ herr_t H5TBread_fields_name(hid_t loc_id,
     if((mem_type_id = H5Tcreate(H5T_COMPOUND, type_size)) < 0)
         goto out;
 
-    /* iterate tru the members */
+    /* iterate through the members */
     for(i = 0, j = 0; i < nfields; i++) {
         /* get the member name */
         if(NULL == (member_name = H5Tget_member_name(ftype_id, (unsigned)i)))
@@ -984,6 +1028,10 @@ herr_t H5TBread_fields_name(hid_t loc_id,
         member_name = NULL;
     } /* end for */
 
+    /* check to make sure field was found, no reason to continue if it does not exist */
+    if(j == 0)
+      goto out;
+    
     /* get the dataspace handle */
     if((sid = H5Dget_space(did)) < 0)
         goto out;
@@ -1074,6 +1122,10 @@ herr_t H5TBread_fields_index(hid_t loc_id,
     char    *member_name = NULL;
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /* open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         goto out;
@@ -1231,6 +1283,11 @@ herr_t H5TBdelete_record(hid_t loc_id,
     unsigned char *tmp_buf = NULL;
     herr_t   ret_val = -1;
 
+    
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /*-------------------------------------------------------------------------
     * first we get information about type size and offsets on disk
     *-------------------------------------------------------------------------
@@ -1390,6 +1447,10 @@ herr_t H5TBinsert_record(hid_t loc_id,
     unsigned char *tmp_buf = NULL;
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /*-------------------------------------------------------------------------
     * read the records after the inserted one(s)
     *-------------------------------------------------------------------------
@@ -1541,6 +1602,12 @@ herr_t H5TBadd_records_from(hid_t loc_id,
     unsigned char *tmp_buf = NULL;
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name1 == NULL) 
+      goto out;
+    if (dset_name2 == NULL) 
+      goto out;
+
     /*-------------------------------------------------------------------------
     * first we get information about type size and offsets on disk
     *-------------------------------------------------------------------------
@@ -1688,6 +1755,14 @@ herr_t H5TBcombine_tables(hid_t loc_id1,
     htri_t   has_fill;
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name1 == NULL) 
+      goto out;
+    if (dset_name2 == NULL) 
+      goto out;
+    if (dset_name3 == NULL) 
+      goto out;
+
     /*-------------------------------------------------------------------------
     * first we get information about type size and offsets on disk
     *-------------------------------------------------------------------------
@@ -2043,6 +2118,12 @@ herr_t H5TBinsert_field(hid_t loc_id,
     hbool_t  inserted;
     herr_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+    if (field_name == NULL) 
+        goto out;
+
     /* get the number of records and fields  */
     if(H5TBget_table_info(loc_id, dset_name, &nfields, &nrecords) < 0)
         goto out;
@@ -2451,6 +2532,13 @@ herr_t H5TBdelete_field(hid_t loc_id,
     htri_t   has_fill = FALSE;
     herr_t   ret_val = -1;
 
+
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+    if (field_name == NULL) 
+        goto out;
+
     /* get the number of records and fields  */
     if(H5TBget_table_info(loc_id, dset_name, &nfields, &nrecords) < 0)
         goto out;
@@ -2859,6 +2947,7 @@ out:
 herr_t H5TBAget_title(hid_t loc_id,
                       char *table_title)
 {
+
     /* Get the TITLE attribute */
     if(H5LT_get_attribute_disk(loc_id, "TITLE", table_title) < 0)
         return -1;
@@ -2894,6 +2983,10 @@ htri_t H5TBAget_fill(hid_t loc_id,
     htri_t   has_fill = FALSE;
     htri_t   ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /* get the number of records and fields  */
     if(H5TBget_table_info(loc_id, dset_name, &nfields, &nrecords) < 0)
         goto out;
@@ -2962,6 +3055,10 @@ herr_t H5TBget_table_info(hid_t loc_id,
     int        num_members;
     herr_t     ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /* open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         goto out;
@@ -3049,6 +3146,10 @@ herr_t H5TBget_field_info(hid_t loc_id,
     hssize_t    i;
     herr_t      ret_val = -1;
 
+    /* check the arguments */
+    if (dset_name == NULL) 
+        goto out;
+
     /* open the dataset. */
     if((did = H5Dopen2(loc_id, dset_name, H5P_DEFAULT)) < 0)
         goto out;
@@ -3153,6 +3254,12 @@ hbool_t H5TB_find_field(const char *field, const char *field_list)
     const char *start = field_list;
     const char *end;
 
+    /* check the arguments */
+    if (field == NULL) 
+      return FALSE;
+    if (field_list == NULL) 
+      return FALSE;
+
     while((end = HDstrstr(start, ",")) != 0) {
         ptrdiff_t count = end - start;
 
@@ -3161,7 +3268,7 @@ hbool_t H5TB_find_field(const char *field, const char *field_list)
         start = end + 1;
     } /* end while */
 
-    if(HDstrcmp(start, field) == 0)
+    if(HDstrncmp(start, field, HDstrlen(field)) == 0)
         return TRUE;
 
     return FALSE;