[NeXus-committee] Segmentation faults in Fortran 90 library

[Osborn, Raymond]

Freddie,
Thanks for the quick fix. I presume that means that the NXhandle defined in NXmodule.f90 is too small, i.e., it works by reference so we can't copy the NXhandle within the F90 code. If so, perhaps we should add that to the documentation (not that I've looked at it in a while).

It may be a gfortran issue - the last time I used the F90 version, it was probably using Absoft Fortran or even on VMS. We are adding NeXus output to the Discus diffuse scattering simulation package. When that's ready for distribution, I guess it would be helpful if we could issue a point release.

Ray

On Aug 15, 2013, at 6:57 PM, freddie.akeroyd at stfc.ac.uk wrote:

> Hi Ray,
> 
> I think I have fixed it (http://trac.nexusformat.org/code/changeset/1904) - it seems making a copy of the NXhandle object in the Fortran NXopen is the problem, though it used to work.  It may be caused by the NXhandle object being larger these days, or the compiler trying to do more stuff on the stack.
> 
> Regards,
> 
> Freddie
> 
>> -----Original Message-----
>> From: nexus-committee-bounces at nexusformat.org [mailto:nexus-
>> committee-bounces at nexusformat.org] On Behalf Of Osborn, Raymond
>> Sent: 15 August 2013 17:56
>> To: Discussions of the NeXus Advisory Committee
>> Subject: [NeXus-committee] Segmentation faults in Fortran 90 library
>> 
>> I suspect that the Fortran 90 version of the NeXus library has fallen into
>> disuse. Has anyone tried it recently? We are getting segmentation faults
>> during a call to NXopen.
>> 
>> Ray
>> --
> -- 
> Scanned by iCritical.

-- 
Ray Osborn, Senior Scientist
Materials Science Division
Argonne National Laboratory
Argonne, IL 60439, USA
Phone: +1 (630) 252-9011
Email: ROsborn at anl.gov