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[netCDF #UBZ-355729]: NetCDF 64-bit offset bug with large records

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  • Subject: [netCDF #UBZ-355729]: NetCDF 64-bit offset bug with large records
  • Date: Fri, 31 May 2013 14:23:00 -0600
Hi Nath,

> I am a colleague of Chuck at EXA Corp. We found that while the write
> issue with large records was fixed in this version, there is still an
> issue on the read side. I am attaching a modified version of your
> large_files.c test program which demonstrates the issue. The following
> patch appears to fix the read issue.
> 
> % diff 4.2.1.1-0{2,3}/amd64_linux_pic/src/libsrc/v1hpg.c
> 1120,1121c1120,1121
> <                        if((*vpp)->len == UINT32_MAX)
> <                            ncp->recsize += (*vpp)->dsizes[0];
> ---
> 
> >                        if((*vpp)->len == UINT32_MAX) /* Flag for large last 
> > record */
> >                            ncp->recsize += (*vpp)->dsizes[0] * (*vpp)->xsz;
> 
> Regards,
> Nath

Thanks for the excellent test and fix!  I've committed both into our current 
development 
trunk, so they'll be in the next release, version 4.3.1.

--Russ

Russ Rew                                         UCAR Unidata Program
address@hidden                      http://www.unidata.ucar.edu



Ticket Details
===================
Ticket ID: UBZ-355729
Department: Support netCDF
Priority: Critical
Status: Closed