[Clas_offline] help needed in compiling clas package

[Jixie Zhang]

HI,

  I am trying to compile some old version of CLASPACK for CentOS6.2 with
gfortran.

I have already done this job using g77 with 32-bit option: "g77 -m32".
But I encountered with some problem when I switched to gfortran with 64 bit
option.

The source file that give me error message is
/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/ana/fill_seb_ntn.F
The error is Arithmetic overflow.

Again, it works fine if you switch the compiler to g77 -m32
I think the best way to solve this error to do some small changes in the
source code.
I think the owner|author of this file will know it better.
I also know that using option -fno-range-*check *with gfortran will also
get it through.
But I am not very sure if this option will cause any potential problem.




The compile command and error message is here:

ifarm1102> gfortran -O2 -m64 -fno-automatic -finit-local-zero
-ffixed-line-length-none -fno-second-underscore -DLinux -DLinux64 -I.
-I../inc_derived/ -I../include/ -I./ -I../ec -I../sc -I../cc -I../seb
-I../trk -I../lac -I../user -I../icf
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/ec
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/sc
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/cc
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/seb
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/trk
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/lac
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/user
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/icf
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/include
-I/w/hallb-1/bonus/jixie/clas/builds/release-4-15/packages/inc_derived
-I/usr/include -I/usr/include -c fill_seb_ntn.F -o
/w/hallb-1/bonus/jixie/clas/builds/release-4-15/obj/Linux64RH6/ana/fill_seb_ntn.o

fill_seb_ntn.F:139.31:

         stbit=int(iw(ind3+1)/2**31)
                               1
Error: Arithmetic overflow at (1)
fill_seb_ntn.F:140.38:

         htbit=int((iw(ind3+1)-stbit*2**31)/2**30)
                                      1
Error: Arithmetic overflow at (1)
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