compiling with gfortran so that all real variables are filled with NaN when
they are allocated, I see that:
subtract65 called from jt65_decode:decode
if(id.ge.1) camp(ind)=dd(id)*conjg(cref(ind))
accesses uninitialized memory at lib/subtract65.f90:65 where
the pertinent local variables have values:
(gdb) print npts
$55 = 624000
(gdb) print ns
$50 = 4458
(gdb) print id
$51 = 624001
(gdb) print nstart
$52 = 85019
(gdb) print ind
$53 = 538983
dd(624001:) are all NaN
dd(0:624000) are all numbers
perhaps a fix is to check for a narrower range:
if(id.ge.1 .and. id.le.npts) camp(ind)=dd(id)*conjg(cref(ind))
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