The code (see attachment) produces a Segnematation fault,
if flags " -O  -funroll-loops" are used.

Change of parameter to 12, 16 gives a correct result.
Also, a change of declaration Character *64 to, say,
Character*45 produces a funny number instead 0.

Removing -unroll-loops flag or using unrolling by hands
also 'fix' the problem.

Release:
3.0.4

Environment:
Linux Mandrake 8.1. GCC/G77 compiled from the source code.

How-To-Repeat:
just compile the code with -O  -funroll-loops flags.