[svn-r16473] Purpose: fix problems related to 'self-referential' attributes

Description:
When an attribute was created with a datatype or dataspace that was shared in
the same object header that the attribute was in, the attribute could not be
deleted.  Changes made to ensure that the attribute can be deleted both when the
attribute is in the object header and when it is shared in the heap.  Object
header message decode routines now take an "open_oh" parameter to enable them to
avoid opening the same object header twice.

Tested: jam, smirom (h5committest)

1 files changed, 3 insertions, 2 deletions

diff --git a/src/H5Oprivate.h b/src/H5Oprivate.h
index 524f786..00c832a 100644
--- a/src/H5Oprivate.h
+++ b/src/H5Oprivate.h
@@ -574,6 +574,7 @@ H5_DLL herr_t H5O_create(H5F_t *f, hid_t dxpl_id, size_t size_hint,
 H5_DLL herr_t H5O_open(H5O_loc_t *loc);
 H5_DLL herr_t H5O_close(H5O_loc_t *loc);
 H5_DLL int H5O_link(const H5O_loc_t *loc, int adjust, hid_t dxpl_id);
+H5_DLL int H5O_link_oh(H5F_t *f, int adjust, hid_t dxpl_id, H5O_t *oh, unsigned *oh_flags);
 H5_DLL H5O_t *H5O_protect(H5O_loc_t *loc, hid_t dxpl_id);
 H5_DLL herr_t H5O_unprotect(H5O_loc_t *loc, H5O_t *oh);
 H5_DLL herr_t H5O_touch(H5O_loc_t *loc, hbool_t force, hid_t dxpl_id);
@@ -634,8 +635,8 @@ H5_DLL herr_t H5O_msg_get_crt_index(unsigned type_id, const void *mesg,
     H5O_msg_crt_idx_t *crt_idx);
 H5_DLL herr_t H5O_msg_encode(H5F_t *f, unsigned type_id, hbool_t disable_shared,
     unsigned char *buf, const void *obj);
-H5_DLL void* H5O_msg_decode(H5F_t *f, hid_t dxpl_id, unsigned type_id,
-    const unsigned char *buf);
+H5_DLL void* H5O_msg_decode(H5F_t *f, hid_t dxpl_id, H5O_t *open_oh,
+    unsigned type_id, const unsigned char *buf);
 H5_DLL herr_t H5O_msg_delete(H5F_t *f, hid_t dxpl_id, H5O_t *open_oh,
     unsigned type_id, void *mesg);