'Morning,
I've noticed (from trying it and then reading the 1.8.7 source in
H5A.c) that H5Aopen seemingly never returns H5E_NOTFOUND. The logic
that I suspect should return H5E_NOTFOUND instead returns
H5E_CANTINIT:
/* Read in attribute from object header */
if(NULL == (attr = H5O_attr_open_by_name(loc.oloc, attr_name,
H5AC_ind_dxpl_id)))
HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to load
attribute info from object header")
Should that HGOTO_ERROR line employ H5E_NOTFOUND? How about the one
following it commented with "Finish initializing attribute"? Otherwise
a caller of H5Aopen cannot distinguish between a non-existent
attribute and other sorts of errors without an auxiliary call to
H5Aexists...
Thanks,
Rhys
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