[svn-r473] Changes since 19980708

----------------------

./src/H5Fistore.c
./src/H5S.c
	Fixed places where `herr_t' functions returned NULL for
	failure: H5F_istore_get_addr() and printf(?!?) (probably
	because a printf() was in the first column :-/ so I don't know
	what function it really was that I fixed), and H5S_extent_copy().

./src/H5Fprivate.h
	Added declarations for H5F_istore_get_addr() and
	H5F_istore_allocate().

./src/H5S.c
./src/H5Sprivate.h
	Split H5Sset_extent_simple() into H5S_set_extent_simple() and
	replaced calls to the API function with calls to the internal
	function.

	Changed calls to H5Screate() to H5S_create() and H5Sclose() to
	H5S_close().

./src/H5Shyper.c
./src/H5Spoint.c
	Removed unused labels and variable.

./src/H5T.c
./src/H5Tconv.c
	Changed calls to H5Tfind() to H5T_find().

./src/H5TB.c
	Split function return type onto a separate line for five
	functions and added API tracing calls.

1 files changed, 11 insertions, 1 deletions

diff --git a/src/H5T.c b/src/H5T.c
index 07bc062..11eef4b 100644
--- a/src/H5T.c
+++ b/src/H5T.c
@@ -3284,6 +3284,7 @@ H5Tconvert (hid_t src_id, hid_t dst_id, size_t nelmts, void *buf,
     H5T_cdata_t		*cdata = NULL;		/*conversion data	*/
     H5T_conv_t		tconv_func = NULL;	/*conversion function	*/
     herr_t		status;			/*func return status	*/
+    H5T_t		*src=NULL, *dst=NULL;	/*unatomized types	*/
 #ifdef H5T_DEBUG
     H5_timer_t		timer;			/*conversion timer	*/
 #endif
@@ -3291,7 +3292,16 @@ H5Tconvert (hid_t src_id, hid_t dst_id, size_t nelmts, void *buf,
     FUNC_ENTER (H5Tconvert, FAIL);
     H5TRACE5("e","iizxx",src_id,dst_id,nelmts,buf,background);
 
-    if (NULL==(tconv_func=H5Tfind (src_id, dst_id, &cdata))) {
+    /* Check args */
+    if (H5_DATATYPE!=H5I_group(src_id) ||
+	NULL==(src=H5I_object(src_id)) ||
+	H5_DATATYPE!=H5I_group(dst_id) ||
+	NULL==(dst=H5I_object(dst_id))) {
+	HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data type");
+    }
+
+    /* Find the conversion function */
+    if (NULL==(tconv_func=H5T_find (src, dst, H5T_BKG_NO, &cdata))) {
 	HRETURN_ERROR (H5E_DATATYPE, H5E_CANTINIT, FAIL,
 		       "unable to convert between src and dst data types");
     }