[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[netCDF #ZQX-155900]: segfault with latest netcdf (4.3.1)

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [netCDF #ZQX-155900]: segfault with latest netcdf (4.3.1)
  • Date: Fri, 24 Jan 2014 11:09:55 -0700
Hi Jeff,

> when accessing an openDAP dataset
> 
> ncdump -v prmslmsl
> http://nomads.ncep.noaa.gov:9090/dods/gens/gens20140123/gep_all_12z
> 
> 
> This works fine with netcdf 4.3.0, but segfaults with 4.3.1 (and git
> master).

I can duplicate the symptoms, so it looks like a bug in ncdump, 
related to the apparent file size (over 140 GB).  nccopy can't be used 
on it either, as it reports:

  NetCDF: One or more variable sizes violate format constraints
  Location: file ../../ncdump/nccopy.c; line 1437

which would be true if it was a netCDF classic format file.

I assume the original data on the DAP server is a netCDF-4 classic
model file.

Thanks for reporting the bug.  Will the file stay at the specified 
URL for a while, until we've determined the cause of the problem?
If not, we'll have to get a copy or synthesize another large file
that demonstrates the problem.

--Russ

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



Ticket Details
===================
Ticket ID: ZQX-155900
Department: Support netCDF
Priority: Normal
Status: Closed