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Description of problem:
tcsh recognize value 2147483648 in variable as negative.

Version-Release number of selected component (if applicable):
tcsh-6.17-25.el6_6

How reproducible:
Always

Steps to Reproduce:

Execute following test01.csh

====== script ====

set InPutFSize=2147483648
echo $InPutFSize

if(${InPutFSize}>0) then;
        echo $InPutFSize "is positive value";
endif

if(${InPutFSize}<0) then;
        echo $InPutFSize "is negative value";
endif

====== script end ===

Actual results:
Result with tcsh from RHEL6. (tcsh-6.17-25.el6_6)
2147483648
2147483648 is negative value

Expected results:
Result with tcsh from RHEL7 (tcsh-6.18.01-8.el7)
2147483648
2147483648 is positive value

Additional info:
This symptom doesn't exist on tcsh from RHEL7.

After spending some times for bisect,
I found following commit between 6.17.00 and 6.17.01 
fix the symptom.

commit f81e094fc9baaa5e96487d684e71cd4fcde8a3a3
Author: Christos Zoulas <christos>
Date:   Tue Jan 26 16:10:08 2010 +0000

    make internal calculations use 64 bits.


Please consider backport this patch to tcsh on RHEL6.

Hello,

and thank you for your bug report and the additional information you have provided to us. We really appreciate your contribution.

---------

NOTE: Additional (follow-up) commit is necessary as well:

> commit 90a08c664d09f275eb1ecb538944164bd92d6168
> Author: Christos Zoulas <christos>
> Date:   6 years ago
>
>    deal with systems that don't have long long

Test tcsh RPM from RHEL6.8 alpha-1, it worked as expected!
Thanks.

[root@localhost ~]# cat test01.tcsh 
#!/bin/tcsh

set InPutFSize=2147483648
echo $InPutFSize

if(${InPutFSize}>0) then;
   echo $InPutFSize " is positive value";
endif

if(${InPutFSize}<0) then;
   echo $InPutFSize " is negative value";
endif


[root@localhost ~]# ./test01.tcsh
2147483648
2147483648  is positive value   <== 
[root@localhost ~]# rpm -q tcsh
tcsh-6.17-34.el6.x86_64

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-0938.html