Re: How to compile Mopac 7.1 using g77 or gfortran

Jugoslav Dujic <jdujic@xxxxxxxxx> wrote:

Dr Ivan D. Reid wrote:
On Wed, 01 Oct 2008 23:31:17 -0500, Steven G. Kargl
<kargl@xxxxxxxxxxxxxxxxxxxxxxxxx>
wrote in <RPednVKmv_wI03nVnZ2dnUVZ_r3inZ2d@xxxxxxxxxxx>:

Fortran runtime error: Array reference out of bounds for array 'nallop',
lower bound of dimension 1 exceeded (-1077948016 < 1)

There was a problem with bounds checking with MOPAC 6, since it
used the old "convention" of specifying argument arrays of unknown length in
subroutines with size 1 -- this has probably carried over into the
later version. (Looking through my source, I see that I must have replaced
all of these declarations with a * at some point; I definitely remember
being bitten by it.)

Yeah, but...

...-1077948016 certainly does not look like a desired array index to
me -- much rather an uninitialized memory location, or an artefact
of an earlier type mismatch.

Also note that the message says it is the lower bound that is exceeded.
That's consistent with the index value being negative. It isn't what
you'd expect from the old f66 convention of using 1 for the upper bound
instead of the * that f66 didn't have.

--
Richard Maine | Good judgement comes from experience;
email: last name at domain . net | experience comes from bad judgement.
domain: summertriangle | -- Mark Twain
.

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