Re: use of H5Gget_objinfo

• To: netcdf-hdf@xxxxxxxxxxxxxxxx
• Subject: Re: use of H5Gget_objinfo
• From: Quincey Koziol <koziol@xxxxxxxxxxxxx>
• Date: Tue, 9 Aug 2005 13:49:13 -0500 (CDT)

Hi Ed,

> It doesn't crash for me.  I put 'NULL' in for the last argument and it is
> fine.

    Hmm, yes, I looked at the internals of the code here and it should be
protected for statbuf being NULL.  Are the rest of the parameters you are
passing in correct?  (the group ID and the name?)

    Quincey

> On Monday 08 August 2005 14:18, Quincey Koziol wrote:
> > Hi Ed,
> >     Hmm, OK, I'll look into this later today and see if I can get a fix
> > into CVS for you.
> >
> >     Quincey
> >
> > > As suggested in the ref manual I am using H5Gget_objinfo to test for
> > > the existence of an object in a HDF5 file.
> > >
> > > When I pass NULL as the last argument, I get a segmentation
> > > fault. When I pass in a valid hunk of memory, it works.
> > >
> > > I believe the docs say that I can pass a NULL here to test for object
> > > existence without caring about the contents of the H5G_stat_t
> > > struct...
> > >
> > > Here's the code that works:
> > >
> > >             H5G_stat_t info;
> > >             if (H5Gget_objinfo(grp->hdf_grpid, var->name, 1, &info) >= 0)
> > >                replace_existing_var++;
> > >
> > > Sorry, I'm blazing through something here and don't have time to
> > > isolate this one in it's own program yet...
> > >
> > > Thanks!
> > >
> > > Ed
> > >
> > > --
> > > Ed Hartnett  -- ed@xxxxxxxxxxxxxxxx
> 
> -- 
> Robert E. McGrath
> National Center for Supercomputing Applications
> University of Illinois, Urbana-Champaign
> Champaign, Illinois 61820
> (217)-333-6549
> 
> mcgrath@xxxxxxxxxxxxx
> 

• References:
  • Re: use of H5Gget_objinfo
    • From: Robert E. McGrath