Re: Printing Fortran muti-dimensional array elements

[Andrew Gaylard]

Claude N Williams wrote:
> Our center is migrating from SUN workstations to Linux RedHat Enterprise 
> (RHE) servers. Our current RHE (i386-redhat-linux) version contains:
>
> GDB  6.1
> G77  3.2.3
> DDD  3.3.1
>
> We have the problem of being an R&D shop using 4 and 5 dimension arrays. 
> We are having the problem that I have found (since 1999) up to 2002 
> about the dimension size swapping and confusion when trying to examine 
> an array element. For instance:
>
> Defining an array(21,101,13) and attempting to examine the (2,1,13) 
> element dies with a segmentation fault!
>
> I realize, through the mail lists, this is (was?) due to the translation 
> to C before compilation in G77 and how the gtabs are (were?) handled by 
> GDB. But I have not seen anything recent.....
>
> Has this problem been fixed? Can we just update the apps. to the current 
> releases and the problem is fixed?
>
> If not, is there a work-around? Other than emulating a one dimensional 
> array and typing out the arithmetic calculation of the offset of the 
> element?
>
> If not, will any of the future releases of any of the apps. above fix 
> this problem (or Gfortran)?
>
> Please point me in the right direction - I am the point man for about 20 
> scientific programmers and I want them to have a good experience with 
> Linux!
>
> Thanks,
> Claude Williams
> Research Scientist
> National Climatic Data Center
> Asheville, NC.

Hi there Claude,

The best release is 3.3.9, but I doubt that it fixes your problem.
Nonetheless, I can recommend upgrading anyway, since problems on older
releases won't be fixed.  It's just the way we work.

Then, having upgraded to 3.3.9 or .10, produce a small testcase consisting
of Fortran source and ddd/gdb commands, and then we can dig into the
problem further.

Cheers,
Andrew.