[mesa-users] debugging modified code

[Robert FARMER]

Hi

The problem is in
#3  0x42ABCC in __star_utils_MOD_em1
star_utils, backtraces you should read from the top down.

In the makefile add -ggdb to the FC_BASIC compile options then ./clean and
./mk.

Then when you run the code the line number will either appear in the
backtrace or you need to run the code under gdb

cd $MESA_DIR/star/test
gdb ./test_star
type r at the prompt and when it crashes type bt that should tell you which
line its crashing at.

Rob

On Wed, Aug 5, 2015 at 10:13 AM, Kenny Van <kvan at ualberta.ca> wrote:

> Hi, I am currently trying to modify some parts of MESA codes and the code
> compiles. However the test fails during the star phase of installing MESA
> with a SIGSEGV.
>
> run_star_extras.o run_star.o  run.o -L../../make -lstar -L../../../lib
> -lionization -latm -lcolors -lmlt -lnse -lnet -leos -lkap -lrates -lneu
> -lchem -linterp_2d -linterp_1d -lnum -lf2crlibm -lcrlibm -lmtx -lconst
> -lutils -lmesaklu -lmesalapack -lmesablas
>
>
> Program received signal SIGSEGV: Segmentation fault - invalid memory
> reference.
>
> Backtrace for this error:
> #0  0x7FE3A4E00777
> #1  0x7FE3A4E00D7E
> #2  0x7FE3A40F1D3F
> #3  0x42ABCC in __star_utils_MOD_em1
> #4  0x66A327 in __hydro_eqns_MOD_do1_dlnt_dm_eqn
> #5  0x670ED4 in __hydro_eqns_MOD_eval_equ_for_solver._omp_fn.0 at
> hydro_eqns.f90:?
> #6  0x7FE3A48DA349
> #7  0x7FE3A3EA5181
> #8  0x7FE3A41B547C
> #9  0xFFFFFFFFFFFFFFFF
> ./test_star: line 6: 24055 Segmentation fault      (core dumped) ./star >
> log
> 0a1
> > stop because star_age >= max_age
>
> Judging from the error the problem is in my hydro_eqns.f90 code. Does
> anyone know a way to narrow down the approximate line where the code fails?
>
> Thanks
>
>
>
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