segmentation fault

[Pfor]

Dear All,
I am working on a F90 code I didn't write.
I would like to execute the code itself two times
(with different parameters) and I wrote a "do" loop at the beginning of the code.
Before the loop ends all the allocated arrays should be deallocated.

Unfortunately at the beginning of the second iteration a
segmentation fault (core dumped) occurs.

I think that the problem is in the allocation or deallocation of some vector.

Is there any option which allows to check which arrays have been allocated and how much memory do they require?

Do you have any suggestion how to find the error?

Thank you
sincerely
Paolo

 

[mikrom]

Is there any option which allows to check which arrays have been allocated

try something like this:

  integer :: n    
  real, allocatable, dimension(:) :: array

  ... 

  if (allocated(array)) then
    n = size(array)
    ...
    deallocate(array)
    ...
  end if

 

[xwb]

If you're on Linux, you could use valgrind to find out where the segmentation violations are occuring. This is similar to Rational (IBM)'s purify.

 

[xwb]

Which compiler are you using? If you are using gfortran, you could add the compile option -fbounds-checking