ifx with debugging flags giving floating point invalid operation in get_close_init

[hkershaw-brown]

Not sure if this is a dart problem or an ifx problem.
cos_del_lon pretty big.

FFLAGS = -g -C -check noarg_temp_created -check nouninit
-fpe0 -fp-model precise -ftrapuv -traceback
-warn declarations,uncalled,unused $(INCS)

No error:
FFLAGS = -g -O0 -C -check noarg_temp_created -check nouninit
-fpe0 -fp-model precise -ftrapuv -traceback
-warn declarations,uncalled,unused $(INCS)

/glade/derecho/scratch/hkershaw/DART/MOM6/test.main

[hkershaw-brown]

cos_del_lon = 570108241892882

if (cos_del_lon > 1) print*, 'cos_del_lon', cos_del_lon, cos(gc%gtt(n)%maxdist), sin(base_lat(bj)), sin(target_lat(tj)), cos(base_lat(bj)), cos(target_lat(tj))

cos_del_lon 570108241892882. 0.921060994002885 -1.00000000000000 -0.906307787036650 6.123233995736766E-017 0.422618261740699

cos_del_lon = (cos(gc%gtt(n)%maxdist) - sin(base_lat(bj)) * sin(target_lat(tj))) / &
(cos(base_lat(bj)) * cos(target_lat(tj)))