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[GEMPAK #KSU-679066]: double free of barr in gempak/source/driver/active/gn/crnexz.c

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  • Subject: [GEMPAK #KSU-679066]: double free of barr in gempak/source/driver/active/gn/crnexz.c
  • Date: Thu, 11 Apr 2013 09:41:45 -0600
Can you give me as much information as possible so I can try to recreate the 
segfault?  What os, version of GEMPAK, gfortran/glibc version, what script 
you're running, etc.

Michael


> Michael,
> 
> Hmmm, the full gdb bt is attached.
> 
> daryl
> 
> 
> 
> On Wed, 10 Apr 2013, Unidata GEMPAK Support wrote:
> 
> > I don't think this is where your problem is coming from.  either barr is
> > freed inside the for loop at line 173, or the break at 180 allows barr
> > to be freed at line 251.  If I'm missing something here let me know, but
> > the crnexz source looks sound.
> >
> > Michael
> >
> >
> >
> >
> >>> Hi Michael,
> >>>
> >>> I occasionally get segfaults running nex2img and diagnosed one of the
> >>> problems.
> >>>
> >>> line 251 of gempak/source/driver/active/gn/crnexz.c
> >>>
> >>> free(barr);
> >>>
> >>> This appears to be a double free situation as barr may be free'd above
> >>> on line 216
> >>>
> >>> daryl
> >>>
> >>> --
> >>> /**
> >>> * Daryl Herzmann
> >>> * Assistant Scientist -- Iowa Environmental Mesonet
> >>> * http://mesonet.agron.iastate.edu
> >>> */
> >>>
> >>>
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: KSU-679066
> > Department: Support GEMPAK
> > Priority: Normal
> > Status: Open
> >
> >
> 
> --
> /**
> * Daryl Herzmann
> * Assistant Scientist -- Iowa Environmental Mesonet
> * http://mesonet.agron.iastate.edu
> */
> 


Ticket Details
===================
Ticket ID: KSU-679066
Department: Support GEMPAK
Priority: Normal
Status: Open