[svn-r1169] ./configure.in

./configure		[REGENERATED]
./src/H5D.c
./src/H5O.c
	Removed H5AC, H5B, and H5T from the default list of packages
	to debug (because they're pretty expensive debugging), and
	added H5O. Also fixed a bug for undefined variable in H5D when
	H5S debugging is turned on but H5T debugging is turned off.

./config/conclude.in
	Fixed installation of header files for building in a directory
	other than the source directory. This fixes a bug where
	H5config.h wasn't being installed.

./src/H5.c
./src/H5A.c
./src/H5D.c
./src/H5F.c
./src/H5G.c
./src/H5I.c
./src/H5Iprivate.h
./src/H5P.c
./src/H5R.c
./src/H5RA.c
./src/H5S.c
./src/H5T.c
./src/H5TB.c
./src/H5Tprivate.h
./src/H5Z.c
./src/H5detect.c
./src/H5private.h
	Changed the way the library shuts down again. Now it handles
	cycles between packages and isn't so sensitive to dependencies
	between packages. A package might shut down only to be
	restarted to process a request from some other package being
	shut down.  Loops are detected after 100 iteractions and the
	shutdown is aborted with a message on standard error.  This
	also makes it a lot easier to debug.

./src/H5A.c
	Fixed H5A_write() and H5A_read() so they pass a non-null
	background buffer to the conversion functions. This is
	necessary when an attribute has a compound data type.

./src/H5Flow.c
./src/H5Fprivate.h
./src/H5Fsec2.c
	Reindented new Win32 stuff.

./src/H5Odtype.c
	Fixed a bug when enumeration types are used in a compound data
	type. The byte pointer wasn't incremented after the type
	information was written.

./tools/h5ls.c
	Compound data types display their total size because it's not
	always obvious from looking at the members.

	Scalar attributes show their space as `scalar' instead of
	`{}'.

	The index value is not printed for attributes that have only a
	few values. Instead the word `Data:' is printed on the first
	line of attribute data.

	Named types display their data type only if verbose output was
	requested.

22 files changed, 618 insertions, 467 deletions

diff --git a/src/H5.c b/src/H5.c
index 5df4d4a..ea6b476 100644
--- a/src/H5.c
+++ b/src/H5.c
@@ -130,65 +130,46 @@ H5_init_library(void)
 void
 H5_term_library(void)
 {
+    intn	pending, ntries=0, n;
+    uintn	at=0;
+    char	loop[1024];
+    
     /* Don't do anything if the library is already closed */
     if (!H5_libinit_g) return;
 
     /*
-     * Close interfaces in a well-defined order based on dependencies. The
-     * goal is that closing one interface doesn't reopen another that was
-     * just closed. In order to help us track down dependencies that we
-     * didn't know about, we close the interfaces in a two step process.  The
-     * first step does the real work and makes the interface unusable. The
-     * second step doesn't do any work but makes it possible to reopen the
-     * interface later.
-     */
-
-    /*
-     * Cycles: The H5F layer participates in quite a few dependency cycles
-     *	       because it's cache depends on almost all other meta object
-     *	       packages and those packages depend on H5O which depends on H5F
-     *	       (because H5F_close() can delay until all object headers are
-     *	       closed). We handle this cycle by calling H5F_close() for all
-     *	       files, which flushes the meta data caches and updates the file
-     *	       boot block.
-     */
-    H5F_close_all();
-
-    /* Function			   What depends on it?			*/
-    /*-------------------------   -------------------------------	*/
-    H5D_term_interface(-1);	/*					*/
-    H5TB_term_interface(-1);	/*					*/
-    H5Z_term_interface(-1);	/*					*/
-    H5A_term_interface(-1);	/*					*/
-    H5RA_term_interface(-1);	/*					*/
-    H5G_term_interface(-1);	/*					*/
-    H5R_term_interface(-1);	/*					*/
-    H5S_term_interface(-1);	/*					*/
-    H5T_native_close(-1);	/* D RA					*/
-    H5T_term_interface(-1);	/* D RA					*/
-    H5P_term_interface(-1);	/* D F					*/
-    H5F_term_interface(-1); 	/* A D G S T				*/
-    H5I_term_interface(-1);	/* A D F G P RA S T TB Z		*/
-    /*------------------------- ---------------------------------	*/
-
-    /*
-     * Finalize the closing by calling all the functions again but with an
-     * argument of zero.  This allows the interface to be reopened later.
+     * Terminate each interface. The termination functions return a positive
+     * value if they do something that might affect some other interface in a
+     * way that would necessitate some cleanup work in the other interface.
      */
-    H5A_term_interface(0);
-    H5D_term_interface(0);
-    H5F_term_interface(0);
-    H5G_term_interface(0);
-    H5I_term_interface(0);
-    H5P_term_interface(0);
-    H5RA_term_interface(0);
-    H5R_term_interface(0);
-    H5S_term_interface(0);
-    H5TB_term_interface(0);
-    H5T_native_close(0);
-    H5T_term_interface(0);
-    H5Z_term_interface(0);
+#define DOWN(F)								      \
+    (((n=H5##F##_term_interface()) && at+5<sizeof loop)?		      \
+     (sprintf(loop+at, "%s%s", at?",":"", #F),				      \
+      at += strlen(loop+at),						      \
+      n):0)
+    
 
+    do {
+	pending = 0;
+	pending += DOWN(F);
+	pending += DOWN(D);
+	pending += DOWN(TB);
+	pending += DOWN(Z);
+	pending += DOWN(RA);
+	pending += DOWN(G);
+	pending += DOWN(R);
+	pending += DOWN(S);
+	pending += DOWN(TN);
+	pending += DOWN(T);
+	pending += DOWN(A);
+	pending += DOWN(P);
+	pending += DOWN(I);
+    } while (pending && ntries++<100);
+    if (pending) {
+	fprintf(stderr, "HDF5: infinite loop closing library\n");
+	fprintf(stderr, "      %s\n", loop);
+    }
+    
     /* Mark library as closed */
     H5_libinit_g = FALSE;
 }
diff --git a/src/H5A.c b/src/H5A.c
index d7cb783..68b9173 100644
--- a/src/H5A.c
+++ b/src/H5A.c
@@ -93,13 +93,21 @@ H5A_init_interface(void)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-void
-H5A_term_interface(intn status)
+intn
+H5A_term_interface(void)
 {
-    if (interface_initialize_g>0) {
-	H5I_destroy_group(H5I_ATTR);
+    intn	n=0;
+    
+    if (interface_initialize_g) {
+	if ((n=H5I_nmembers(H5I_ATTR))) {
+	    H5I_clear_group(H5I_ATTR);
+	} else {
+	    H5I_destroy_group(H5I_ATTR);
+	    interface_initialize_g = 0;
+	    n = 1;
+	}
     }
-    interface_initialize_g = status;
+    return n;
 }
 
 
@@ -602,6 +610,7 @@ static herr_t
 H5A_write(H5A_t *attr, const H5T_t *mem_type, void *buf)
 {
     uint8_t		*tconv_buf = NULL;	/* data type conv buffer */
+    uint8_t		*bkg_buf = NULL;	/* temp conversion buffer */
     size_t		nelmts;		    	/* elements in attribute */
     H5T_path_t		*tpath = NULL;		/* conversion information*/
     hid_t		src_id = -1, dst_id = -1;/* temporary type atoms */
@@ -626,7 +635,8 @@ H5A_write(H5A_t *attr, const H5T_t *mem_type, void *buf)
 
     /* Get the maximum buffer size needed and allocate it */
     buf_size = nelmts*MAX(src_type_size,dst_type_size);
-    if (NULL==(tconv_buf = H5MM_malloc (buf_size))) {
+    if (NULL==(tconv_buf = H5MM_malloc (buf_size)) ||
+	NULL==(bkg_buf = H5MM_malloc(buf_size))) {
 	HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL,
 		     "memory allocation failed");
     }
@@ -650,7 +660,7 @@ H5A_write(H5A_t *attr, const H5T_t *mem_type, void *buf)
     }
 
     /* Perform data type conversion */
-    if (H5T_convert(tpath, src_id, dst_id, nelmts, tconv_buf, NULL)<0) {
+    if (H5T_convert(tpath, src_id, dst_id, nelmts, tconv_buf, bkg_buf)<0) {
 	HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL,
 		    "data type conversion failed");
     }
@@ -683,6 +693,8 @@ done:
         H5I_dec_ref(dst_id);
     if (tconv_buf)
         H5MM_xfree(tconv_buf);
+    if (bkg_buf)
+	H5MM_xfree(bkg_buf);
 
     FUNC_LEAVE(ret_value);
 } /* H5A_write() */
@@ -761,6 +773,7 @@ static herr_t
 H5A_read(H5A_t *attr, const H5T_t *mem_type, void *buf)
 {
     uint8_t		*tconv_buf = NULL;	/* data type conv buffer*/
+    uint8_t		*bkg_buf = NULL;	/* background buffer */
     size_t		nelmts;			/* elements in attribute*/
     H5T_path_t		*tpath = NULL;		/* type conversion info	*/
     hid_t		src_id = -1, dst_id = -1;/* temporary type atoms*/
@@ -789,7 +802,8 @@ H5A_read(H5A_t *attr, const H5T_t *mem_type, void *buf)
     else {  /* Attribute exists and has a value */
         /* Get the maximum buffer size needed and allocate it */
         buf_size = nelmts*MAX(src_type_size,dst_type_size);
-        if (NULL==(tconv_buf = H5MM_malloc (buf_size))) {
+        if (NULL==(tconv_buf = H5MM_malloc (buf_size)) ||
+	    NULL==(bkg_buf = H5MM_malloc(buf_size))) {
         HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL,
                  "memory allocation failed");
         }
@@ -812,11 +826,11 @@ H5A_read(H5A_t *attr, const H5T_t *mem_type, void *buf)
             }
         }
 
-        /* Perform data type conversion.  */
-        if (H5T_convert(tpath, src_id, dst_id, nelmts, tconv_buf, NULL)<0) {
-        HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL,
-                "data type conversion failed");
-        }
+    /* Perform data type conversion.  */
+    if (H5T_convert(tpath, src_id, dst_id, nelmts, tconv_buf, bkg_buf)<0) {
+	HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL,
+		    "data type conversion failed");
+    }
 
         /* Copy the converted data into the user's buffer */
         HDmemcpy(buf,tconv_buf,dst_type_size*nelmts);
@@ -832,6 +846,8 @@ done:
         H5I_dec_ref(dst_id);
     if (tconv_buf)
         H5MM_xfree(tconv_buf);
+    if (bkg_buf)
+	H5MM_xfree(bkg_buf);
 
     FUNC_LEAVE(ret_value);
 } /* H5A_read() */
diff --git a/src/H5D.c b/src/H5D.c
index 6f55154..623d57a 100644
--- a/src/H5D.c
+++ b/src/H5D.c
@@ -129,7 +129,10 @@ H5D_init_interface(void)
  *
  * Purpose:	Terminate this interface.
  *
- * Return:	void
+ * Return:	Success:	Positive if anything was done that might
+ *				affect other interfaces; zero otherwise.
+ *
+ * 		Failure:	Negative.
  *
  * Programmer:	Robb Matzke
  *              Friday, November 20, 1998
@@ -138,13 +141,21 @@ H5D_init_interface(void)
  *
  *-------------------------------------------------------------------------
  */
-void
-H5D_term_interface(intn status)
+intn
+H5D_term_interface(void)
 {
-    if (interface_initialize_g>0) {
-	H5I_destroy_group(H5I_DATASET);
+    int		n=0;
+
+    if (interface_initialize_g) {
+	if ((n=H5I_nmembers(H5I_DATASET))) {
+	    H5I_clear_group(H5I_DATASET);
+	} else {
+	    H5I_destroy_group(H5I_DATASET);
+	    interface_initialize_g = 0;
+	    n = 1; /*H5I*/
+	}
     }
-    interface_initialize_g = status;
+    return n;
 }
 
 
@@ -1465,7 +1476,7 @@ H5D_read(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space,
     H5T_bkg_t		need_bkg;		/*type of background buf*/
     H5S_t		*free_this_space=NULL;	/*data space to free	*/
     hbool_t             must_convert;           /*have to xfer the slow way */
-#ifdef H5T_DEBUG
+#if defined(H5S_DEBUG) || defined(H5T_DEBUG)
     H5_timer_t		timer;
 #endif
 
@@ -1815,7 +1826,7 @@ H5D_write(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space,
     H5T_bkg_t		need_bkg;		/*type of background buf*/
     H5S_t		*free_this_space=NULL;	/*data space to free	*/
     hbool_t             must_convert;        /*have to xfer the slow way*/
-#ifdef H5T_DEBUG
+#if defined(H5S_DEBUG) || defined(H5T_DEBUG)
     H5_timer_t		timer;
 #endif
 
diff --git a/src/H5F.c b/src/H5F.c
index 57b4162..67d229c 100644
--- a/src/H5F.c
+++ b/src/H5F.c
@@ -212,9 +212,11 @@ H5F_init_interface(void)
  *		variables to their initial values.  Release all ID groups
  *		associated with this interface.
  *
- * Return:	Success:	
+ * Return:	Success:	Positive if anything was done that might
+ *				have affected other interfaces; zero
+ *				otherwise.
  *
- *		Failure:	
+ *		Failure:        Never fails.
  *
  * Programmer:	Robb Matzke
  *              Friday, February 19, 1999
@@ -223,14 +225,22 @@ H5F_init_interface(void)
  *
  *-------------------------------------------------------------------------
  */
-void
-H5F_term_interface(intn status)
+intn
+H5F_term_interface(void)
 {
-    if (interface_initialize_g>0) {
-	H5I_destroy_group(H5I_FILE);
-	H5I_destroy_group(H5I_FILE_CLOSING);
+    intn	n = 0;
+
+    if (interface_initialize_g) {
+	if ((n=H5I_nmembers(H5I_FILE))) {
+	    H5F_close_all();
+	} else if (0==(n=H5I_nmembers(H5I_FILE_CLOSING))) {
+	    H5I_destroy_group(H5I_FILE);
+	    H5I_destroy_group(H5I_FILE_CLOSING);
+	    interface_initialize_g = 0;
+	    n = 1; /*H5I*/
+	}
     }
-    interface_initialize_g = status;
+    return n;
 }
 
 
@@ -287,7 +297,9 @@ H5F_flush_all(hbool_t invalidate)
 /*-------------------------------------------------------------------------
  * Function:	H5F_close_all
  *
- * Purpose:	Close all open files.
+ * Purpose:	Close all open files. Any file which has open object headers
+ *		will be moved from the H5I_FILE group to the H5I_FILE_CLOSING
+ *		group.
  *
  * Return:	Success:	Non-negative
  *
@@ -304,26 +316,7 @@ herr_t
 H5F_close_all(void)
 {
     FUNC_ENTER(H5F_close_all, FAIL);
-
-    /*
-     * Close all normally open files. Any file which has open object headers
-     * will be moved to the H5I_FILE_CLOSING ID group.
-     */
-    if (H5I_destroy_group(H5I_FILE)<0) {
-	HRETURN_ERROR(H5E_FILE, H5E_CANTINIT, FAIL,
-		      "unable to destroy H5I_FILE ID group");
-    }
-
-    /*
-     * Recreate the H5I_FILE group just in case someone wants to open or
-     * create another file later.
-     */
-    if (H5I_init_group(H5I_FILE, H5I_FILEID_HASHSIZE, 0,
-		       (H5I_free_t)H5F_close)<0) {
-	HRETURN_ERROR(H5E_FILE, H5E_CANTINIT, FAIL,
-		      "unable to recreate H5I_FILE ID group");
-    }
-    
+    H5I_clear_group(H5I_FILE);
     FUNC_LEAVE(SUCCEED);
 }
 
@@ -788,7 +781,6 @@ H5F_dest(H5F_t *f)
 	 */
 	--f->nrefs;
     }
-
     
     FUNC_LEAVE(ret_value);
 }
@@ -954,7 +946,6 @@ H5F_open(const char *name, uintn flags,
 	    HRETURN_ERROR(H5E_FILE, H5E_WRITEERROR, NULL,
 			  "file is not writable");
 	}
-
 	if ((old = H5I_search(H5I_FILE, H5F_compare_files, &search)) ||
 	    (old = H5I_search(H5I_FILE_CLOSING, H5F_compare_files, &search))) {
 	    if (flags & H5F_ACC_TRUNC) {
@@ -975,9 +966,7 @@ H5F_open(const char *name, uintn flags,
 	    }
 	    f = H5F_new(old->shared, NULL, NULL);
 
-	}
-
-	else if (flags & H5F_ACC_TRUNC) {
+	} else if (flags & H5F_ACC_TRUNC) {
 	    /* Truncate existing file */
 	    if (0 == (flags & H5F_ACC_RDWR)) {
 		HRETURN_ERROR(H5E_FILE, H5E_BADVALUE, NULL,
@@ -1817,12 +1806,12 @@ H5F_close(H5F_t *f)
 	}
     }
 #ifdef WIN32
-	/*free up the memory for path*/
+    /*free up the memory for path*/
 
-	free(f->shared->key.path);
+    free(f->shared->key.path);
 #endif
-	
-	/*
+
+    /*
      * Destroy the H5F_t struct and decrement the reference count for the
      * shared H5F_file_t struct. If the reference count for the H5F_file_t
      * struct reaches zero then destroy it also.
diff --git a/src/H5Flow.c b/src/H5Flow.c
index c1b426d..2570930 100644
--- a/src/H5Flow.c
+++ b/src/H5Flow.c
@@ -492,47 +492,43 @@ H5F_low_access(const H5F_low_class_t *type, const char *name,
 	if (key) {
 
 #ifdef WIN32
-
-/*
-	some windows specific types. the LPSTR is just a char*  
-*/
-		LPSTR pathbuf = NULL; 
-		LPSTR *namebuf = NULL; 
-		int bufsize = 0;
-
-
+	    /*
+	     * Some windows specific types. the LPSTR is just a char*  
+	     */
+	    LPSTR pathbuf = NULL; 
+	    LPSTR *namebuf = NULL; 
+	    int bufsize = 0;
+
+
+	    /*
+	     * Gets the full path of the file name.  the if statement below
+	     * is to try to distinguish if we have the ablosute path already
+	     */
+	    if ((*(name+1) != ':') && (*(name+2)!= '\\')){ 
 		/*
-			gets the full path of the file name.  the if statement below is to try
-			to distinguish if we have the ablosute path already
-		*/
-
-		if ((*(name+1) != ':') && (*(name+2)!= '\\')){ 
-			/*
-				if the size of the buffer is too small it will return
-				the appropriate size of the buffer not including the null
-            */
-			bufsize = GetFullPathName(name,bufsize,pathbuf,namebuf);
-			if (bufsize != 0){
-				pathbuf = malloc(sizeof(char) * (bufsize + 1));
-				namebuf = malloc(sizeof(char) * (bufsize + 1));
-				bufsize++;
-				GetFullPathName(name,bufsize,pathbuf,namebuf); 
-			}
-			else {
-				pathbuf = NULL;
-			}
-		}
-		else {
-			pathbuf = malloc(strlen(name));
-			strcpy(pathbuf,name);
+		 * if the size of the buffer is too small it will return
+		 * the appropriate size of the buffer not including the null
+		 */
+		bufsize = GetFullPathName(name,bufsize,pathbuf,namebuf);
+		if (bufsize != 0){
+		    pathbuf = malloc(sizeof(char) * (bufsize + 1));
+		    namebuf = malloc(sizeof(char) * (bufsize + 1));
+		    bufsize++;
+		    GetFullPathName(name,bufsize,pathbuf,namebuf); 
+		} else {
+		    pathbuf = NULL;
 		}
+	    } else {
+		pathbuf = malloc(strlen(name));
+		strcpy(pathbuf,name);
+	    }
 
-		key->path = pathbuf;
-		key->dev = 0;
-		key->ino = 0;
+	    key->path = pathbuf;
+	    key->dev = 0;
+	    key->ino = 0;
 #else
 	    HDstat(name, &sb);
-		key->path = NULL;
+	    key->path = NULL;
 	    key->dev = sb.st_dev;
 	    key->ino = sb.st_ino;
 #endif
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
index 92f5ead..55048b3 100644
--- a/src/H5Fprivate.h
+++ b/src/H5Fprivate.h
@@ -302,7 +302,7 @@ typedef struct H5F_access_t {
 typedef struct H5F_search_t {
     dev_t	dev;		/* Device number containing file	*/
     ino_t	ino;		/* Unique file number on device		*/
-	char*   path;
+    char	*path;		/* File name used only in Win32		*/
 } H5F_search_t;
 
 /* For determining what the last file operation was */
diff --git a/src/H5Fsec2.c b/src/H5Fsec2.c
index 27dfa51..e71f793 100644
--- a/src/H5Fsec2.c
+++ b/src/H5Fsec2.c
@@ -99,41 +99,36 @@ H5F_sec2_open(const char *name, const H5F_access_t __unused__ *access_parms,
 
     if (key) {
 #if WIN32
-/*
-	some windows specific types. the LPSTR is just a char*  
-*/
-		LPSTR pathbuf = NULL; 
-		LPSTR *namebuf = NULL; 
-		int bufsize = 0;
-
-
-		/*
-			gets the full path of the file name.  the if statement below is to try
-			to distinguish if we have the ablosute path already
-		*/
+	/*
+	 * some windows specific types. the LPSTR is just a char*  
+	 */
+	LPSTR pathbuf = NULL; 
+	LPSTR *namebuf = NULL; 
+	int bufsize = 0;
 
-		if ((*(name+1) != ':') && (*(name+2)!= '\\')){ 
-			/*
-				if the size of the buffer is too small it will return
-				the appropriate size of the buffer not including the null
-            */
-			bufsize = GetFullPathName(name,bufsize,pathbuf,namebuf);
-			if (bufsize != 0){
-				pathbuf = malloc(sizeof(char) * (bufsize + 1));
-				namebuf = malloc(sizeof(char) * (bufsize + 1));
-				bufsize++;
-				GetFullPathName(name,bufsize,pathbuf,namebuf); 
-			}
-			else {
-				pathbuf = NULL;
-			}
-		}
-		else {
-			pathbuf = malloc(strlen(name));
-			strcpy(pathbuf,name);
-		}
-
-		key->path = pathbuf;
+	/*
+	 * gets the full path of the file name.  the if statement below is to
+	 * try to distinguish if we have the ablosute path already
+	 */
+	if ((*(name+1) != ':') && (*(name+2)!= '\\')){ 
+	    /*
+	     * if the size of the buffer is too small it will return
+	     * the appropriate size of the buffer not including the null
+	     */
+	    bufsize = GetFullPathName(name,bufsize,pathbuf,namebuf);
+	    if (bufsize != 0){
+		pathbuf = malloc(sizeof(char) * (bufsize + 1));
+		namebuf = malloc(sizeof(char) * (bufsize + 1));
+		bufsize++;
+		GetFullPathName(name,bufsize,pathbuf,namebuf); 
+	    } else {
+		pathbuf = NULL;
+	    }
+	} else {
+	    pathbuf = malloc(strlen(name));
+	    strcpy(pathbuf,name);
+	}
+	key->path = pathbuf;
 #else
 	key->path = NULL;
 #endif
diff --git a/src/H5G.c b/src/H5G.c
index ad87ccb..7b76e41 100644
--- a/src/H5G.c
+++ b/src/H5G.c
@@ -706,7 +706,10 @@ H5G_init_interface(void)
  *
  * Purpose:	Terminates the H5G interface
  *
- * Return:	void
+ * Return:	Success:	Positive if anything is done that might
+ *				affect other interfaces; zero otherwise.
+ *
+ * 		Failure:	Negative.
  *
  * Programmer:	Robb Matzke
  *		Monday, January	 5, 1998
@@ -715,24 +718,33 @@ H5G_init_interface(void)
  *
  *-------------------------------------------------------------------------
  */
-void
-H5G_term_interface(intn status)
+intn
+H5G_term_interface(void)
 {
     size_t	i;
+    intn	n=0;
+    
+    if (interface_initialize_g) {
+	if ((n=H5I_nmembers(H5I_GROUP))) {
+	    H5I_clear_group(H5I_GROUP);
+	} else {
+	    /* Empty the object type table */
+	    for (i=0; i<H5G_ntypes_g; i++) {
+		H5MM_xfree(H5G_type_g[i].desc);
+	    }
+	    H5G_ntypes_g = H5G_atypes_g = 0;
+	    H5G_type_g = H5MM_xfree(H5G_type_g);
+    
+	    /* Destroy the group object id group */
+	    H5I_destroy_group(H5I_GROUP);
 
-    if (interface_initialize_g>0) {
-	/* Empty the object type table */
-	for (i=0; i<H5G_ntypes_g; i++) {
-	    H5MM_xfree(H5G_type_g[i].desc);
+	    /* Mark closed */
+	    interface_initialize_g = 0;
+	    n = 1; /*H5I*/
 	}
-	H5G_ntypes_g = H5G_atypes_g = 0;
-	H5G_type_g = H5MM_xfree(H5G_type_g);
-    
-	/* Destroy the group object id group */
-	H5I_destroy_group(H5I_GROUP);
     }
     
-    interface_initialize_g = status;
+    return n;
 }
 
 
diff --git a/src/H5I.c b/src/H5I.c
index a9bf18f..75bb5c9 100644
--- a/src/H5I.c
+++ b/src/H5I.c
@@ -152,9 +152,13 @@ H5I_init_interface(void)
  * Function:	H5I_term_interface
  *
  * Purpose:	Terminate the H5I interface: release all memory, reset all
- *		global variables to initial values.
+ *		global variables to initial values. This only happens if all
+ *		groups have been destroyed from other interfaces.
  *
- * Return:	void
+ * Return:	Success:	Positive if any action was taken that might
+ *				affect some other interface; zero otherwise.
+ *
+ * 		Failure:	Negative.
  *
  * Programmer:	
  *
@@ -162,39 +166,43 @@ H5I_init_interface(void)
  *
  *-------------------------------------------------------------------------
  */
-void 
-H5I_term_interface(intn status)
+intn
+H5I_term_interface(void)
 {
     H5I_id_group_t	*grp_ptr;
     H5I_id_info_t	*curr;
     H5I_type_t		grp;
+    intn		n=0;
 
-    if (interface_initialize_g>0) {
+    if (interface_initialize_g) {
+
+	/* How many groups are still being used? */
 	for (grp=(H5I_type_t)0; grp<H5I_NGROUPS; grp++) {
-	    /*
-	     * Destroy each group regardless of reference count. This removes
-	     * any objects which might still be defined in the group. Then
-	     * free the group header struct and zero the global group array.
-	     */
-	    if ((grp_ptr=H5I_id_group_list_g[grp])) {
-		grp_ptr->count = 1;
-		H5I_destroy_group(grp);
+	    if ((grp_ptr=H5I_id_group_list_g[grp]) && grp_ptr->id_list) {
+		n++;
+	    }
+	}
+
+	/* If no groups are used then clean  up */
+	if (0==n) {
+	    for (grp=(H5I_type_t)0; grp<H5I_NGROUPS; grp++) {
+		grp_ptr = H5I_id_group_list_g[grp];
 		H5MM_xfree(grp_ptr);
 		H5I_id_group_list_g[grp] = NULL;
 	    }
-	}
-	
 
-	/* Release the global free list */
-	while (H5I_id_free_list_g) {
-	    curr = H5I_id_free_list_g;
-	    H5I_id_free_list_g = H5I_id_free_list_g->next;
-	    H5MM_xfree(curr);
+	    /* Release the global free list */
+	    while (H5I_id_free_list_g) {
+		curr = H5I_id_free_list_g;
+		H5I_id_free_list_g = H5I_id_free_list_g->next;
+		H5MM_xfree(curr);
+	    }
 	}
+
+	/* Mark interface closed */
+	interface_initialize_g = 0;
     }
-    
-    /* Indicate interface status */
-    interface_initialize_g = status;
+    return n;
 }
 
 
@@ -300,6 +308,129 @@ H5I_init_group(H5I_type_t grp, size_t hash_size, uintn reserved,
 
 
 /*-------------------------------------------------------------------------
+ * Function:	H5I_nmembers
+ *
+ * Purpose:	Returns the number of members in a group.
+ *
+ * Return:	Success:	Number of members; zero if the group is empty
+ *				or has been deleted.
+ *
+ *		Failure:	Negative
+ *
+ * Programmer:	Robb Matzke
+ *              Wednesday, March 24, 1999
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+intn
+H5I_nmembers(H5I_type_t grp)
+{
+    H5I_id_group_t	*grp_ptr = NULL;
+    H5I_id_info_t	*cur=NULL;
+    intn		n=0;
+    uintn		i;
+
+    FUNC_ENTER(H5I_nmembers, FAIL);
+
+    if (grp<=H5I_BADID || grp>=H5I_NGROUPS) {
+	HRETURN_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "invalid group number");
+    }
+    if (NULL==(grp_ptr=H5I_id_group_list_g[grp]) || grp_ptr->count<=0) {
+	HRETURN(0);
+    }
+
+    for (i=0; i<grp_ptr->hash_size; i++) {
+	for (cur=grp_ptr->id_list[i]; cur; cur=cur->next) {
+	    n++;
+	}
+    }
+    FUNC_LEAVE(n);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5I_clear_group
+ *
+ * Purpose:	Removes all objects from the group, calling the free
+ *		function for each object regardless of the reference count.
+ *
+ * Return:	Success:	Non-negative
+ *
+ *		Failure:	negative
+ *
+ * Programmer:	Robb Matzke
+ *              Wednesday, March 24, 1999
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5I_clear_group(H5I_type_t grp)
+{
+    H5I_id_group_t	*grp_ptr = NULL;	/* ptr to the atomic group */
+    H5I_id_info_t	*cur=NULL, *next=NULL;
+    intn		ret_value = SUCCEED;
+    uintn		i;
+
+    FUNC_ENTER(H5I_clear_group, FAIL);
+
+    if (grp <= H5I_BADID || grp >= H5I_NGROUPS) {
+	HGOTO_DONE(FAIL);
+    }
+    
+    grp_ptr = H5I_id_group_list_g[grp];
+    if (grp_ptr == NULL || grp_ptr->count <= 0) {
+	HGOTO_DONE(FAIL);
+    }
+
+#ifdef IDS_ARE_CACHED
+    /*
+     * Remove atoms from the global atom cache.
+     */
+    for (i=0; i<ID_CACHE_SIZE; i++) {
+	if (H5I_GROUP(H5I_id_cache_g[i]) == grp) {
+	    H5I_id_cache_g[i] = (-1);
+	    H5I_obj_cache_g[i] = NULL;
+	}
+    }
+#endif /* IDS_ARE_CACHED */
+
+    /*
+     * Call free method for all objects in group regardless of their reference
+     * counts. Ignore the return value from from the free method and remove
+     * object from group regardless.
+     */
+    if (grp_ptr->free_func) {
+	for (i=0; i<grp_ptr->hash_size; i++) {
+	    for (cur=grp_ptr->id_list[i]; cur; cur=next) {
+		/* Free the object regardless of reference count */
+		if ((grp_ptr->free_func)(cur->obj_ptr)<0) {
+#if H5I_DEBUG
+		    if (H5DEBUG(I)) {
+			fprintf(H5DEBUG(I), "H5I: free grp=%d obj=0x%08lx "
+				"failure ignored\n", (int)grp,
+				(unsigned long)(cur->obj_ptr));
+		    }
+#endif /*H5I_DEBUG*/
+		}
+		    
+		/* Add ID struct to free list */
+		next = cur->next;
+		H5I_release_id_node(cur);
+	    }
+	    grp_ptr->id_list[i]=NULL;
+	}
+    }
+    
+  done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5I_destroy_group
  *
  * Purpose:	Decrements the reference count on an entire group of IDs.
@@ -324,9 +455,7 @@ herr_t
 H5I_destroy_group(H5I_type_t grp)
 {
     H5I_id_group_t	*grp_ptr = NULL;	/* ptr to the atomic group */
-    H5I_id_info_t	*cur=NULL, *next=NULL;
     intn		ret_value = SUCCEED;
-    uintn		i;
 
     FUNC_ENTER(H5I_destroy_group, FAIL);
 
@@ -345,46 +474,7 @@ H5I_destroy_group(H5I_type_t grp)
      * free function is invoked for each atom being freed.
      */
     if (1==grp_ptr->count) {
-#ifdef IDS_ARE_CACHED
-	/*
-	 * Remove atoms from the global atom cache.
-	 */
-	for (i=0; i<ID_CACHE_SIZE; i++) {
-	    if (H5I_GROUP(H5I_id_cache_g[i]) == grp) {
-		H5I_id_cache_g[i] = (-1);
-		H5I_obj_cache_g[i] = NULL;
-	    }
-	}
-#endif /* IDS_ARE_CACHED */
-
-	/*
-	 * Call free method for all objects in group regardless of there
-	 * reference counts. Ignore the return value from from the free
-	 * method and remove object from group regardless.
-	 */
-	if (grp_ptr->free_func) {
-	    for (i=0; i<grp_ptr->hash_size; i++) {
-		for (cur=grp_ptr->id_list[i]; cur; cur=next) {
-		    /* Free the object regardless of reference count */
-		    if ((grp_ptr->free_func)(cur->obj_ptr)<0) {
-#if H5I_DEBUG
-			if (H5DEBUG(I)) {
-			    fprintf(H5DEBUG(I), "H5I: free grp=%d obj=0x%08lx "
-				    "failure ignored\n", (int)grp,
-				    (unsigned long)(cur->obj_ptr));
-			}
-#endif /*H5I_DEBUG*/
-		    }
-		    
-		    /* Add ID struct to free list */
-		    next = cur->next;
-		    cur->next = H5I_id_free_list_g;
-		    H5I_id_free_list_g = cur;
-		}
-	    }
-	}
-
-	/* Free local cache and reset group */
+	H5I_clear_group(grp);
 	H5MM_xfree(grp_ptr->id_list);
 	HDmemset (grp_ptr, 0, sizeof(*grp_ptr));
     } else {
diff --git a/src/H5Iprivate.h b/src/H5Iprivate.h
index a41a3d6..99b6628 100644
--- a/src/H5Iprivate.h
+++ b/src/H5Iprivate.h
@@ -73,6 +73,8 @@ typedef struct {
 /* Private Functions in H5I.c */
 __DLL__ intn H5I_init_group(H5I_type_t grp, size_t hash_size, uintn reserved,
 			    H5I_free_t func);
+__DLL__ intn H5I_nmembers(H5I_type_t grp);
+__DLL__ herr_t H5I_clear_group(H5I_type_t grp);
 __DLL__ herr_t H5I_destroy_group(H5I_type_t grp);
 __DLL__ hid_t H5I_register(H5I_type_t grp, void *object);
 __DLL__ void *H5I_object(hid_t id);
diff --git a/src/H5O.c b/src/H5O.c
index b55de7c..ff90661 100644
--- a/src/H5O.c
+++ b/src/H5O.c
@@ -273,6 +273,18 @@ H5O_close(H5G_entry_t *obj_ent)
     /* Decrement open-lock counters */
     --obj_ent->file->nopen_objs;
 
+#ifdef H5O_DEBUG
+    if (H5DEBUG(O)) {
+	if (obj_ent->file->closing && 1==obj_ent->file->shared->nrefs) {
+	    HDfprintf(H5DEBUG(O), "< %a auto %lu remaining\n",
+		      &(obj_ent->header),
+		      (unsigned long)(obj_ent->file->nopen_objs));
+	} else {
+	    HDfprintf(H5DEBUG(O), "< %a\n", &(obj_ent->header));
+	}
+    }
+#endif
+    
     /*
      * If the file open-lock count has reached zero and the file has a close
      * pending then close the file and remove it from the H5I_FILE_CLOSING ID
@@ -281,11 +293,6 @@ H5O_close(H5G_entry_t *obj_ent)
     if (0==obj_ent->file->nopen_objs && obj_ent->file->closing) {
 	H5I_dec_ref(obj_ent->file->closing);
     }
-#ifdef H5O_DEBUG
-    if (H5DEBUG(O)) {
-	HDfprintf(H5DEBUG(O), "< %a\n", &(obj_ent->header));
-    }
-#endif
 
     FUNC_LEAVE(SUCCEED);
 }
diff --git a/src/H5Odtype.c b/src/H5Odtype.c
index 662d2d4..9f45a6c 100644
--- a/src/H5Odtype.c
+++ b/src/H5Odtype.c
@@ -248,6 +248,7 @@ H5O_dtype_decode_helper(const uint8_t **pp, H5T_t *dt)
 	/* Values */
 	HDmemcpy(dt->u.enumer.value, *pp,
 		 dt->u.enumer.nmembs * dt->parent->size);
+	*pp += dt->u.enumer.nmembs * dt->parent->size;
 	break;
 
     case H5T_REFERENCE:
@@ -269,6 +270,7 @@ H5O_dtype_decode_helper(const uint8_t **pp, H5T_t *dt)
 
     FUNC_LEAVE(SUCCEED);
 }
+
 
 /*-------------------------------------------------------------------------
  * Function:	H5O_dtype_encode_helper
diff --git a/src/H5P.c b/src/H5P.c
index 230e81a..dff20bb 100644
--- a/src/H5P.c
+++ b/src/H5P.c
@@ -100,18 +100,28 @@ H5P_init_interface(void)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-void
-H5P_term_interface(intn status)
+intn
+H5P_term_interface(void)
 {
-    intn		    i;
+    intn	i, n=0;
 
-    if (interface_initialize_g>0) {
-	for (i = 0; i < H5P_NCLASSES; i++) {
-	    H5I_destroy_group((H5I_type_t)(H5I_TEMPLATE_0 + i));
+    if (interface_initialize_g) {
+	for (i=0; i<H5P_NCLASSES; i++) {
+	    n += H5I_nmembers((H5I_type_t)(H5I_TEMPLATE_0+i));
+	}
+	if (n) {
+	    for (i=0; i<H5P_NCLASSES; i++) {
+		H5I_clear_group((H5I_type_t)(H5I_TEMPLATE_0+i));
+	    }
+	} else {
+	    for (i=0; i<H5P_NCLASSES; i++) {
+		H5I_destroy_group((H5I_type_t)(H5I_TEMPLATE_0 + i));
+		n++; /*H5I*/
+	    }
+	    interface_initialize_g = 0;
 	}
     }
-    
-    interface_initialize_g = status;
+    return n;
 }
 
 /*--------------------------------------------------------------------------
diff --git a/src/H5R.c b/src/H5R.c
index 2fa4fd2..0ba7898 100644
--- a/src/H5R.c
+++ b/src/H5R.c
@@ -87,15 +87,22 @@ H5R_init_interface(void)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-void
-H5R_term_interface(intn status)
+intn
+H5R_term_interface(void)
 {
-    if (interface_initialize_g>0) {
-	/* Free ID group */
-	H5I_destroy_group(H5I_REFERENCE);
+    intn	n=0;
+    
+    if (interface_initialize_g) {
+	if ((n=H5I_nmembers(H5I_REFERENCE))) {
+	    H5I_clear_group(H5I_REFERENCE);
+	} else {
+	    H5I_destroy_group(H5I_REFERENCE);
+	    interface_initialize_g = 0;
+	    n = 1; /*H5I*/
+	}
     }
     
-    interface_initialize_g = status;
+    return n;
 }
 
 
diff --git a/src/H5RA.c b/src/H5RA.c
index 76455b5..bf0f5ef 100644
--- a/src/H5RA.c
+++ b/src/H5RA.c
@@ -106,7 +106,10 @@ H5RA_init_interface(void)
  *
  * Purpose:	Terminate the ragged array interface.
  *
- * Return:	void
+ * Return:	Success:	Positive if anything was done that might
+ *				affect some other interface. Zero otherwise.
+ *
+ * 		Failure:	Negaitive
  *
  * Programmer:	Robb Matzke
  *              Tuesday, August 25, 1998
@@ -115,16 +118,23 @@ H5RA_init_interface(void)
  *
  *-------------------------------------------------------------------------
  */
-void
-H5RA_term_interface(intn status)
+intn
+H5RA_term_interface(void)
 {
-    if (interface_initialize_g>0) {
-	H5I_destroy_group(H5I_RAGGED);
-	H5T_close(H5RA_meta_type_g);
-	H5RA_meta_type_g = NULL;
+    intn	n=0;
+
+    if (interface_initialize_g) {
+	if ((n=H5I_nmembers(H5I_RAGGED))) {
+	    H5I_clear_group(H5I_RAGGED);
+	} else {
+	    H5T_close(H5RA_meta_type_g);
+	    H5RA_meta_type_g = NULL;
+	    H5I_destroy_group(H5I_RAGGED);
+	    interface_initialize_g = 0;
+	    n = 1; /*H5T,H5I*/
+	}
     }
-    
-    interface_initialize_g = status;
+    return n;
 }
 
 
diff --git a/src/H5S.c b/src/H5S.c
index 0d82b83..ff0a31c 100644
--- a/src/H5S.c
+++ b/src/H5S.c
@@ -108,10 +108,11 @@ H5S_init_interface(void)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-void
-H5S_term_interface(intn status)
+intn
+H5S_term_interface(void)
 {
     size_t	i;
+    intn	n=0;
     
 #ifdef H5S_DEBUG
     int		j, nprints=0;
@@ -119,99 +120,110 @@ H5S_term_interface(intn status)
     char	buf[256];
 #endif
 
-    if (interface_initialize_g>0) {
+    if (interface_initialize_g) {
+	if ((n=H5I_nmembers(H5I_DATASPACE))) {
+	    H5I_clear_group(H5I_DATASPACE);
+	} else {
 #ifdef H5S_DEBUG
-	/*
-	 * Print statistics about each conversion path.
-	 */
-	if (H5DEBUG(S)) {
-	    for (i=0; i<H5S_nconv_g; i++) {
-		path = H5S_conv_g[i];
-		for (j=0; j<2; j++) {
-		    if (0==path->stats[j].gath_ncalls &&
-			0==path->stats[j].scat_ncalls &&
-			0==path->stats[j].bkg_ncalls) {
-			continue;
-		    }
-		    if (0==nprints++) {
-			fprintf(H5DEBUG(S), "H5S: data space conversion "
-				"statistics:\n");
-			fprintf(H5DEBUG(S),
-				"   %-16s %10s %10s %8s %8s %8s %10s\n",
-				"Memory <> File", "Bytes", "Calls",
-				"User", "System", "Elapsed", "Bandwidth");
-			fprintf(H5DEBUG(S),
-				"   %-16s %10s %10s %8s %8s %8s %10s\n",
-				"--------------", "-----", "-----",
-				"----", "------", "-------", "---------");
-		    }
-
-		    /* Summary */
-		    sprintf(buf, "%s %c %s",
-			    path->m->name, 0==j?'>':'<', path->f->name);
-		    fprintf(H5DEBUG(S), "   %-16s\n", buf);
-
-		    /* Gather */
-		    if (path->stats[j].gath_ncalls) {
-			H5_bandwidth(buf, (double)(path->stats[j].gath_nbytes),
-				     path->stats[j].gath_timer.etime);
-			HDfprintf(H5DEBUG(S),
-				  "   %16s %10Hu %10Hu %8.2f %8.2f %8.2f "
-				  "%10s\n", "gather",
-				  path->stats[j].gath_nbytes,
-				  path->stats[j].gath_ncalls,
-				  path->stats[j].gath_timer.utime, 
-				  path->stats[j].gath_timer.stime, 
-				  path->stats[j].gath_timer.etime,
-				  buf);
-		    }
-
-		    /* Scatter */
-		    if (path->stats[j].scat_ncalls) {
-			H5_bandwidth(buf, (double)(path->stats[j].scat_nbytes),
-				     path->stats[j].scat_timer.etime);
-			HDfprintf(H5DEBUG(S),
-				  "   %16s %10Hu %10Hu %8.2f %8.2f %8.2f "
-				  "%10s\n", "scatter",
-				  path->stats[j].scat_nbytes,
-				  path->stats[j].scat_ncalls,
-				  path->stats[j].scat_timer.utime, 
-				  path->stats[j].scat_timer.stime, 
-				  path->stats[j].scat_timer.etime,
-				  buf);
-		    }
-
-		    /* Background */
-		    if (path->stats[j].bkg_ncalls) {
-			H5_bandwidth(buf, (double)(path->stats[j].bkg_nbytes),
-				     path->stats[j].bkg_timer.etime);
-			HDfprintf(H5DEBUG(S),
-				  "   %16s %10Hu %10Hu %8.2f %8.2f %8.2f "
-				  "%10s\n", "background",
-				  path->stats[j].bkg_nbytes,
-				  path->stats[j].bkg_ncalls,
-				  path->stats[j].bkg_timer.utime, 
-				  path->stats[j].bkg_timer.stime, 
-				  path->stats[j].bkg_timer.etime,
-				  buf);
+	    /*
+	     * Print statistics about each conversion path.
+	     */
+	    if (H5DEBUG(S)) {
+		for (i=0; i<H5S_nconv_g; i++) {
+		    path = H5S_conv_g[i];
+		    for (j=0; j<2; j++) {
+			if (0==path->stats[j].gath_ncalls &&
+			    0==path->stats[j].scat_ncalls &&
+			    0==path->stats[j].bkg_ncalls) {
+			    continue;
+			}
+			if (0==nprints++) {
+			    fprintf(H5DEBUG(S), "H5S: data space conversion "
+				    "statistics:\n");
+			    fprintf(H5DEBUG(S),
+				    "   %-16s %10s %10s %8s %8s %8s %10s\n",
+				    "Memory <> File", "Bytes", "Calls",
+				    "User", "System", "Elapsed", "Bandwidth");
+			    fprintf(H5DEBUG(S),
+				    "   %-16s %10s %10s %8s %8s %8s %10s\n",
+				    "--------------", "-----", "-----",
+				    "----", "------", "-------", "---------");
+			}
+
+			/* Summary */
+			sprintf(buf, "%s %c %s",
+				path->m->name, 0==j?'>':'<', path->f->name);
+			fprintf(H5DEBUG(S), "   %-16s\n", buf);
+
+			/* Gather */
+			if (path->stats[j].gath_ncalls) {
+			    H5_bandwidth(buf,
+					 (double)(path->stats[j].gath_nbytes),
+					 path->stats[j].gath_timer.etime);
+			    HDfprintf(H5DEBUG(S),
+				      "   %16s %10Hu %10Hu %8.2f %8.2f %8.2f "
+				      "%10s\n", "gather",
+				      path->stats[j].gath_nbytes,
+				      path->stats[j].gath_ncalls,
+				      path->stats[j].gath_timer.utime, 
+				      path->stats[j].gath_timer.stime, 
+				      path->stats[j].gath_timer.etime,
+				      buf);
+			}
+
+			/* Scatter */
+			if (path->stats[j].scat_ncalls) {
+			    H5_bandwidth(buf,
+					 (double)(path->stats[j].scat_nbytes),
+					 path->stats[j].scat_timer.etime);
+			    HDfprintf(H5DEBUG(S),
+				      "   %16s %10Hu %10Hu %8.2f %8.2f %8.2f "
+				      "%10s\n", "scatter",
+				      path->stats[j].scat_nbytes,
+				      path->stats[j].scat_ncalls,
+				      path->stats[j].scat_timer.utime, 
+				      path->stats[j].scat_timer.stime, 
+				      path->stats[j].scat_timer.etime,
+				      buf);
+			}
+
+			/* Background */
+			if (path->stats[j].bkg_ncalls) {
+			    H5_bandwidth(buf,
+					 (double)(path->stats[j].bkg_nbytes),
+					 path->stats[j].bkg_timer.etime);
+			    HDfprintf(H5DEBUG(S),
+				      "   %16s %10Hu %10Hu %8.2f %8.2f %8.2f "
+				      "%10s\n", "background",
+				      path->stats[j].bkg_nbytes,
+				      path->stats[j].bkg_ncalls,
+				      path->stats[j].bkg_timer.utime, 
+				      path->stats[j].bkg_timer.stime, 
+				      path->stats[j].bkg_timer.etime,
+				      buf);
+			}
 		    }
 		}
 	    }
-	}
 #endif
 
-	/* Free data types */
-	H5I_destroy_group(H5I_DATASPACE);
+	    /* Free data types */
+	    H5I_destroy_group(H5I_DATASPACE);
 
-	/* Clear/free conversion table */
-	HDmemset(H5S_fconv_g, 0, sizeof(H5S_fconv_g));
-	HDmemset(H5S_mconv_g, 0, sizeof(H5S_mconv_g));
-	for (i=0; i<H5S_nconv_g; i++) H5MM_xfree(H5S_conv_g[i]);
-	H5S_conv_g = H5MM_xfree(H5S_conv_g);
-	H5S_nconv_g = H5S_aconv_g = 0;
+	    /* Clear/free conversion table */
+	    HDmemset(H5S_fconv_g, 0, sizeof(H5S_fconv_g));
+	    HDmemset(H5S_mconv_g, 0, sizeof(H5S_mconv_g));
+	    for (i=0; i<H5S_nconv_g; i++) H5MM_xfree(H5S_conv_g[i]);
+	    H5S_conv_g = H5MM_xfree(H5S_conv_g);
+	    H5S_nconv_g = H5S_aconv_g = 0;
+
+	    /* Shut down interface */
+	    interface_initialize_g = 0;
+	    n = 1; /*H5I*/
+	}
     }
     
-    interface_initialize_g = status;
+    return n;
 }
 
 
diff --git a/src/H5T.c b/src/H5T.c
index 28fe21c..e1d9dd1 100644
--- a/src/H5T.c
+++ b/src/H5T.c
@@ -192,7 +192,7 @@ H5T_init_interface(void)
      * Initialize pre-defined native data types from code generated during
      * the library configuration by H5detect.
      */
-    if (H5T_native_open()<0) {
+    if (H5TN_init_interface()<0) {
 	HGOTO_ERROR (H5E_DATATYPE, H5E_CANTINIT, FAIL,
 		     "unable to initialize interface");
     }
@@ -1091,7 +1091,11 @@ H5T_unlock_cb (void *_dt, const void __unused__ *key)
  *
  * Purpose:	Close this interface.
  *
- * Return:	void
+ * Return:	Success:	Positive if any action might have caused a
+ *				change in some other interface; zero
+ *				otherwise.
+ *
+ * 		Failure:	Negative
  *
  * Programmer:	Robb Matzke
  *              Friday, November 20, 1998
@@ -1102,53 +1106,59 @@ H5T_unlock_cb (void *_dt, const void __unused__ *key)
  *	called.
  *-------------------------------------------------------------------------
  */
-void
-H5T_term_interface(intn status)
+intn
+H5T_term_interface(void)
 {
-    intn	i, nprint=0;
+    intn	i, nprint=0, n=0;
     H5T_path_t	*path = NULL;
 
-    if (interface_initialize_g>0) {
-
-	/* Unregister all conversion functions */
-	for (i=0; i<H5T_g.npaths; i++) {
-	    path = H5T_g.path[i];
-	    assert (path);
-
-	    if (path->func) {
-		H5T_print_stats(path, &nprint/*in,out*/);
-		path->cdata.command = H5T_CONV_FREE;
-		if ((path->func)(FAIL, FAIL, &(path->cdata),
-				 0, NULL, NULL)<0) {
+    if (interface_initialize_g) {
+	if ((n=H5I_nmembers(H5I_DATATYPE))) {
+	    H5I_clear_group(H5I_DATATYPE);
+	} else {
+	    /* Unregister all conversion functions */
+	    for (i=0; i<H5T_g.npaths; i++) {
+		path = H5T_g.path[i];
+		assert (path);
+
+		if (path->func) {
+		    H5T_print_stats(path, &nprint/*in,out*/);
+		    path->cdata.command = H5T_CONV_FREE;
+		    if ((path->func)(FAIL, FAIL, &(path->cdata),
+				     0, NULL, NULL)<0) {
 #ifdef H5T_DEBUG
-		    if (H5DEBUG(T)) {
-			fprintf (H5DEBUG(T), "H5T: conversion function "
-				 "0x%08lx failed to free private data for %s "
-				 "(ignored)\n",
-				 (unsigned long)(path->func), path->name);
-		    }
+			if (H5DEBUG(T)) {
+			    fprintf (H5DEBUG(T), "H5T: conversion function "
+				     "0x%08lx failed to free private data for "
+				     "%s (ignored)\n",
+				     (unsigned long)(path->func), path->name);
+			}
 #endif
-		    H5E_clear(); /*ignore the error*/
+			H5E_clear(); /*ignore the error*/
+		    }
 		}
+		H5T_close (path->src);
+		H5T_close (path->dst);
+		H5MM_xfree (path);
+		H5T_g.path[i] = NULL;
 	    }
-	    H5T_close (path->src);
-	    H5T_close (path->dst);
-	    H5MM_xfree (path);
-	    H5T_g.path[i] = NULL;
-	}
 
-	/* Clear conversion tables */
-	H5T_g.path = H5MM_xfree(H5T_g.path);
-	H5T_g.npaths = H5T_g.apaths = 0;
-	H5T_g.soft = H5MM_xfree(H5T_g.soft);
-	H5T_g.nsoft = H5T_g.asoft = 0;
+	    /* Clear conversion tables */
+	    H5T_g.path = H5MM_xfree(H5T_g.path);
+	    H5T_g.npaths = H5T_g.apaths = 0;
+	    H5T_g.soft = H5MM_xfree(H5T_g.soft);
+	    H5T_g.nsoft = H5T_g.asoft = 0;
 
-	/* Unlock all datatypes, then free them */
-	H5I_search (H5I_DATATYPE, H5T_unlock_cb, NULL);
-	H5I_destroy_group(H5I_DATATYPE);
+	    /* Unlock all datatypes, then free them */
+	    H5I_search (H5I_DATATYPE, H5T_unlock_cb, NULL);
+	    H5I_destroy_group(H5I_DATATYPE);
+
+	    /* Mark interface as closed */
+	    interface_initialize_g = 0;
+	    n = 1; /*H5I*/
+	}
     }
-    
-    interface_initialize_g = status;
+    return n;
 }
 
 
diff --git a/src/H5TB.c b/src/H5TB.c
index 93b87d6..19d400e 100644
--- a/src/H5TB.c
+++ b/src/H5TB.c
@@ -108,33 +108,36 @@ H5TB_init_interface(void)
  EXAMPLES
  REVISION LOG
 --------------------------------------------------------------------------*/
-void
-H5TB_term_interface(intn status)
+intn
+H5TB_term_interface(void)
 {
     H5TB_t *curr=H5TB_list_head,       /* pointer to current temp. buffer */
         *next;                          /* pointer to next temp. buffer */
-
-    if (interface_initialize_g>0) {
-	/* Destroy the atom group */
-	H5I_destroy_group(H5I_TEMPBUF);
-
-	/* Step through the list and free the buffers */
-	while(curr!=NULL) {
-	    next=curr->next;
-
-	    if(curr->buf!=NULL)
-		H5MM_xfree(curr->buf);
-	    H5MM_xfree(curr);
-
-	    curr=next;
-	} /* end while */
-
-	/* Reset head & tail pointers */
-	H5TB_list_head=H5TB_list_tail=NULL;
+    intn n=0;
+
+    if (interface_initialize_g) {
+	if ((n=H5I_nmembers(H5I_TEMPBUF))) {
+	    H5I_clear_group(H5I_TEMPBUF);
+	} else {
+	    /* Free group and buffers */
+	    H5I_destroy_group(H5I_TEMPBUF);
+	    while(curr!=NULL) {
+		next=curr->next;
+
+		if(curr->buf!=NULL)
+		    H5MM_xfree(curr->buf);
+		H5MM_xfree(curr);
+
+		curr=next;
+	    }
+	    H5TB_list_head=H5TB_list_tail=NULL;
+	    interface_initialize_g = 0;
+	    n = 1; /*H5I*/
+	}
     }
-    
-    interface_initialize_g = status;
+    return n;
 }
+
 
 /*-------------------------------------------------------------------------
  * Function:	H5TB_close
diff --git a/src/H5Tprivate.h b/src/H5Tprivate.h
index 8d59f40..f5aed63 100644
--- a/src/H5Tprivate.h
+++ b/src/H5Tprivate.h
@@ -61,7 +61,7 @@ typedef struct H5T_path_t {
 #define H5T_IS_NOOP(P)	((P)->is_hard && 0==H5T_cmp((P)->src, (P)->dst))
 
 /* Private functions */
-__DLL__ herr_t H5T_native_open(void);
+__DLL__ herr_t H5TN_init_interface(void);
 __DLL__ herr_t H5T_init(void);
 __DLL__ htri_t H5T_isa(H5G_entry_t *ent);
 __DLL__ H5T_t *H5T_open(H5G_entry_t *loc, const char *name);
diff --git a/src/H5Z.c b/src/H5Z.c
index bb22f47..8a5b7b3 100644
--- a/src/H5Z.c
+++ b/src/H5Z.c
@@ -72,8 +72,8 @@ H5Z_init_interface (void)
  *
  *-------------------------------------------------------------------------
  */
-void
-H5Z_term_interface (intn status)
+intn
+H5Z_term_interface (void)
 {
     size_t	i;
 #ifdef H5Z_DEBUG
@@ -81,7 +81,7 @@ H5Z_term_interface (intn status)
     char	comment[16], bandwidth[32];
 #endif
 
-    if (interface_initialize_g>0) {
+    if (interface_initialize_g) {
 #ifdef H5Z_DEBUG
 	if (H5DEBUG(Z)) {
 	    for (i=0; i<H5Z_table_used_g; i++) {
@@ -103,7 +103,8 @@ H5Z_term_interface (intn status)
 		    }
 
 		    /* Truncate the comment to fit in the field */
-		    HDstrncpy(comment, H5Z_table_g[i].name, sizeof comment);
+		    HDstrncpy(comment, H5Z_table_g[i].name,
+			      sizeof comment);
 		    comment[sizeof(comment)-1] = '\0';
 
 		    /*
@@ -129,16 +130,15 @@ H5Z_term_interface (intn status)
 	    }
 	}
 #endif
-
 	/* Free the table */
 	for (i=0; i<H5Z_table_used_g; i++) {
 	    H5MM_xfree(H5Z_table_g[i].name);
 	}
 	H5Z_table_g = H5MM_xfree(H5Z_table_g);
 	H5Z_table_used_g = H5Z_table_alloc_g = 0;
+	interface_initialize_g = 0;
     }
-    
-    interface_initialize_g = status;
+    return 0;
 }
 
 
diff --git a/src/H5detect.c b/src/H5detect.c
index 84b5401..558e02e 100644
--- a/src/H5detect.c
+++ b/src/H5detect.c
@@ -377,20 +377,21 @@ static intn interface_initialize_g = 0;\n\
 
     /* The interface termination function */
     printf("\n\
-void\n\
-H5T_native_close(intn status)\n\
+intn\n\
+H5TN_term_interface(void)\n\
 {\n\
-    interface_initialize_g = status;\n\
+    interface_initialize_g = 0;\n\
+    return 0;\n\
 }\n");
 
     /* The interface initialization function */
     printf("\n\
 herr_t\n\
-H5T_native_open (void)\n\
+H5TN_init_interface(void)\n\
 {\n\
    H5T_t	*dt = NULL;\n\
 \n\
-   FUNC_ENTER (H5T_init, FAIL);\n");
+   FUNC_ENTER (H5TN_init_interface, FAIL);\n");
 
     for (i = 0; i < nd; i++) {
 
diff --git a/src/H5private.h b/src/H5private.h
index 84f3b0f..651c93e 100644
--- a/src/H5private.h
+++ b/src/H5private.h
@@ -886,15 +886,12 @@ extern hbool_t H5_libinit_g;   /*good thing C's lazy about extern! */
       interface_initialize_g = 1;					      \
       if (interface_init_func &&					      \
 	  ((herr_t(*)(void))interface_init_func)()<0) {			      \
+         interface_initialize_g = 0;					      \
 	 HRETURN_ERROR (H5E_FUNC, H5E_CANTINIT, err,			      \
 			"interface initialization failed");		      \
       }									      \
-   } else if (interface_initialize_g<0) {				      \
-       assert("interface is closing" && 0);				      \
-       HRETURN_ERROR(H5E_FUNC, H5E_CANTINIT, err,			      \
-		     "interface is closing");				      \
    }									      \
-									      \
+   									      \
    /* Clear thread error stack entering public functions */		      \
    if (H5E_clearable_g && H5_IS_API (FUNC)) {				      \
        H5E_clear ();							      \
@@ -938,19 +935,19 @@ __DLL__ herr_t H5_init_library(void);
 __DLL__ void H5_term_library(void);
 
 /* Functions to terminate interfaces */
-__DLL__ void H5A_term_interface(intn status);
-__DLL__ void H5D_term_interface(intn status);
-__DLL__ void H5F_term_interface(intn status);
-__DLL__ void H5G_term_interface(intn status);
-__DLL__ void H5I_term_interface(intn status);
-__DLL__ void H5P_term_interface(intn status);
-__DLL__ void H5RA_term_interface(intn status);
-__DLL__ void H5R_term_interface(intn status);
-__DLL__ void H5S_term_interface(intn status);
-__DLL__ void H5TB_term_interface(intn status);
-__DLL__ void H5T_native_close(intn status);
-__DLL__ void H5T_term_interface(intn status);
-__DLL__ void H5Z_term_interface(intn status);
+__DLL__ intn H5A_term_interface(void);
+__DLL__ intn H5D_term_interface(void);
+__DLL__ intn H5F_term_interface(void);
+__DLL__ intn H5G_term_interface(void);
+__DLL__ intn H5I_term_interface(void);
+__DLL__ intn H5P_term_interface(void);
+__DLL__ intn H5RA_term_interface(void);
+__DLL__ intn H5R_term_interface(void);
+__DLL__ intn H5S_term_interface(void);
+__DLL__ intn H5TB_term_interface(void);
+__DLL__ intn H5TN_term_interface(void);
+__DLL__ intn H5T_term_interface(void);
+__DLL__ intn H5Z_term_interface(void);
 
 
 #endif