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Re: Bug with nc_inq_varid() in C interface? (fwd)

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Date:    Tue, 02 Aug 2005 21:00:01 +0200
From:    Thomas Orgis <address@hidden>
To:      Russ Rew <address@hidden>
cc:      address@hidden
Subject: Re: Bug with nc_inq_varid() in C interface?

> > that it segfaults when trying to get the id to a non-existent
> 
> I can't reproduce this problem.  Could you try compiling and running

I can't either! I also tried to reconstruct the bits of code that showed this 
behaviour, but they now also throw the error correctly...

There was sth. like:

                        if
                        (
                                (nc_inq_varid(id, "time", &vars[0]) == NC_NOERR)
                                && (nc_inq_varid(id, "lev", &vars[1]) == 
NC_NOERR)
                                && (nc_inq_varid(id, "lat", &vars[2]) == 
NC_NOERR)
                                && (nc_inq_varid(id, "lon", &vars[3]) == 
NC_NOERR)
                                && (nc_inq_varid(id, "u", &vars[4]) == NC_NOERR)
                                && (nc_inq_varid(id, "v", &vars[5]) == NC_NOERR)
                                && (nc_inq_varid(id, "omega", &vars[6]) == 
NC_NOERR)
                        )
                        {
                                cerr << "[datagroup] variables there" << endl;
                                //...
                        }

I don't have this project under version control... otherwise I could come up 
with something. I know that I testet with a file not containing omega and the 
program crashed before the stderr output line. Removing the last nc_inq line 
got the program through.
I cannot tell anymore what kind of sideeffect (special condition) this has been.
If I stumble over this again, I'll look closer...

Bottom line: You're right. It works. Excuse me for the (most probably) false 
blame.


-- 
Thomas Orgis, theoretischer Physiker - praktischer Mensch.

Arbeitsgruppe Nichtlineare Dynamik
Institut für Physik der Universität Potsdam

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