[svn-r323] Changes since 19980316

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

./src/H5D.c
./src/H5T.c
./src/H5Tprivate.h
	Fixed a bug found by Kevin Powell regarding preservation of
	existing data during a read or write when the source and
	destination data types are the same.  Thanks Kevin!

	Fixed a couple warnings on Irix64.

./src/H5D.c
./src/H5Dprivate.h
./src/H5P.c
./src/H5Ppublic.c
./src/H5Tconv.c
./src/H5Tpublic.h
./test/cmpd_dset.c
	The application can now turn on/off the part of the I/O
	pipeline that deals with preservation of initialized data.
	The default is off since this will be the usual case and
	turning it on slows down the pipe.  Use H5Pset_preserve() and
	H5Pget_preserve().

./src/H5Fistore.c
	Added an optimization for reading/writing a single chunk of
	chunked storage.

./src/H5Odtype.c
./src/H5Oefl.c
./src/H5Olayout.c
./src/H5Oname.c
./src/H5Osdspace.c
./src/H5Ostab.c
	Fixed warnings reported by marek@iiasa.ac.at.  Thanks Marek.

./src/H5Odtype.c
	Fixed a failing assert() wrt reading compound types (not
	present in hdf5-1.0.0a).

1 files changed, 4 insertions, 3 deletions

diff --git a/src/H5Odtype.c b/src/H5Odtype.c
index e2a09a3..fe30d00 100644
--- a/src/H5Odtype.c
+++ b/src/H5Odtype.c
@@ -174,6 +174,7 @@ H5O_dtype_decode_helper(const uint8 **pp, H5T_t *dt)
             dt->u.compnd.memb[i].perm[1] = (perm_word >> 8) & 0xff;
             dt->u.compnd.memb[i].perm[2] = (perm_word >> 16) & 0xff;
             dt->u.compnd.memb[i].perm[3] = (perm_word >> 24) & 0xff;
+	    dt->u.compnd.memb[i].type = H5MM_xcalloc (1, sizeof(H5T_t));
             if (H5O_dtype_decode_helper(pp, dt->u.compnd.memb[i].type) < 0 ||
                 H5T_COMPOUND == dt->u.compnd.memb[i].type->type) {
                 for (j = 0; j <= i; j++)
@@ -548,7 +549,7 @@ H5O_dtype_copy(const void *_src, void *_dst)
         H5F_t *f;         IN: pointer to the HDF5 file struct
         const void *mesg;     IN: Pointer to the source simple datatype struct
  RETURNS
-    Size of message on success, FAIL on failure
+    Size of message on success, 0 on failure
  DESCRIPTION
         This function returns the size of the raw simple datatype message on
     success.  (Not counting the message type or size fields, only the data
@@ -561,7 +562,7 @@ H5O_dtype_size(H5F_t *f, const void *mesg)
     size_t                  ret_value = 8;
     const H5T_t            *dt = (const H5T_t *) mesg;
 
-    FUNC_ENTER(H5O_dtype_size, FAIL);
+    FUNC_ENTER(H5O_dtype_size, 0);
 
     assert(mesg);
 
@@ -728,7 +729,7 @@ H5O_dtype_debug(H5F_t *f, const void *mesg, FILE * stream,
                 }
                 fprintf(stream, "}\n");
             }
-            H5O_dtype_debug(f, &(dt->u.compnd.memb[i].type), stream,
+            H5O_dtype_debug(f, dt->u.compnd.memb[i].type, stream,
                             indent + 3, MAX(0, fwidth - 3));
         }
     } else {