avl and gfortran

[Jack Howarth]

    Has anyone tried building the AVL program from...

http://web.mit.edu/drela/Public/web/avl/

with gfortran? The fink packager of this program is
noticing regressions compared to using g95. On my
ppc Darwin8 box, I noticed that the session1.txt
tests seem to go astray. In particular, for the
section...

C1         enter horizontal-flight trim setup menu
  G 9.8      set gravitational acceleration
  D 1.2      set air density
  M 100.0    set mass
  B 30.0     set 30 deg bank angle
  <Return>   return to OPER menu

X          execute calculation
T          show Trefftz Plane plot

The calculation shows nothing but NaN results. This
is with all of the gfortran code compiled at -O3
and -fdefault-real-8 while the c code is compiled
at -O3. It might be worth looking at this for
some more corner cases where gfortran is failing.
               Jack