Re: grdmath problems

Joachim:


I followed your advice:
cd /usr/src/gmt-4.5.11
export CFLAGS="-g -O0"
sudo ./configure --enable-debug
sudo make

then I ran these again and still got the buffer overflow error:

/usr/src/gmt-4.5.11/bin/grdmath -R0/10/0/10 -I1 X = 1.grd
/usr/src/gmt-4.5.11/bin/grdmath -R0/10/0/10 -I1 X = 2.grd
/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

The backtrace looks similar to before:

osop@osop-displays2:~$ /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
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x37)[0x7f2217ae5f47]
/lib/x86_64-linux-gnu/libc.so.6(+0x109e40)[0x7f2217ae4e40]
/lib/x86_64-linux-gnu/libc.so.6(+0x108d13)[0x7f2217ae3d13]
/usr/src/gmt-4.5.11/bin/grdmath[0x41e286]
/usr/src/gmt-4.5.11/bin/grdmath[0x40cd4a]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7f22179fc76d]
/usr/src/gmt-4.5.11/bin/grdmath[0x40f409]
======= Memory map: ========
...
...


*Branden Christensen*
The Seismo Guys Blog: http://www.osop.com.pa/blog/the-seismo-guys/
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