Re: grdmath problems

Paul:


Buenas tardes.

I would like to take up this issue again.

The buffer overflow is caused by grdmath on a 64-bit 12.04 LTS Ubuntu
machine running GMT 4.5.11.

Here is the complete command and resulting error:

/usr/src/gmt-4.5.11/bin/grdmath
/opt/shakemap2/bin/../data/9583161/richter/pgv_rock.grd DUP DUP 10 LE 0.65
MUL EXCH DUP DUP DUP 10 GT EXCH 20 LE MUL EXCH 10 SUB 10 DIV -0.05 MUL 0.65
ADD MUL EXCH DUP DUP DUP 20 GT EXCH 30 LE MUL EXCH 20 SUB 10 DIV -0.07 MUL
0.60 ADD MUL EXCH DUP DUP DUP 30 GT EXCH 40 LE MUL EXCH 30 SUB 10 DIV -0.08
MUL 0.53 ADD MUL EXCH 40 GT 0.45 MUL ADD ADD ADD ADD 686
/opt/shakemap2/bin/../data/9583161/output/UFVS74PC0J.grd DIV EXCH POW MUL =
/opt/shakemap2/bin/../data/9583161/output/pgv.grd
*** buffer overflow detected ***: /usr/src/gmt-4.5.11/bin/grdmath terminated

The input files do not matter. I created a new directory "tmp" and touched
1.grd, 2.grd and 3.grd. Then:
osop@osop-displays2:~/tmp$ /usr/src/gmt-4.5.11/bin/grdmath 1.grd DUP DUP 10
LE 0.65 MUL EXCH DUP DUP DUP 10 GT EXCH 20 LE MUL EXCH 10 SUB 10 DIV -0.05
MUL 0.65 ADD MUL EXCH DUP DUP DUP 20 GT EXCH 30 LE MUL EXCH 20 SUB 10 DIV
-0.07 MUL 0.60 ADD MUL EXCH DUP DUP DUP 30 GT EXCH 40 LE MUL EXCH 30 SUB 10
DIV -0.08 MUL 0.53 ADD MUL EXCH 40 GT 0.45 MUL ADD ADD ADD ADD 686 2.grd
DIV EXCH POW MUL = 3.grd*** buffer overflow detected ***:
/usr/src/gmt-4.5.11/bin/grdmath terminated


Thank you for your expertise.


Kind Regards from Panama,


*Branden Christensen*
The Seismo Guys Blog: http://www.osop.com.pa/blog/the-seismo-guys/
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On Fri, Nov 29, 2013 at 9:32 AM, Paul Wessel <[email protected]> wrote:

> Brendan-
>
> It would be helpful if you could save the files used to run the grdmath
> command below which seems to be the first that crashes.  However, that is
> clearly not the full grdmath command since there is no -R -I or gridfile on
> the input side. If I am to be of any help I will need an actual grdmath
> command line that crashes and all the input files that it requires so I can
> try to recreate the situation here.
>
> Cheers,
> -p
>
>
>
> On Nov 28, 2013, at 5:54 PM, Branden Christensen <
> [email protected]> wrote:
>
> grdmath: (/opt/shakemap2/bin/../data/9583161/output/hwxDhIWuGY.xy) PDIST
> 27.47 HYPOT = /opt/shakemap2/bin/../data/9583161/output/D7FwNIcwDT.grd
> *** buffer overflow detected ***: /usr/lib/gmt/bin/grdmath terminated
>
>
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>

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