D:\Development>perl -v

This is perl, v5.6.1 built for MSWin32-x86-multi-thread
(with 1 registered patch, see perl -V for more detail)

Copyright 1987-2001, Larry Wall

Binary build 633 provided by ActiveState Corp. http://www.ActiveState.com
Built 21:33:05 Jun 17 2002

...

D:\Development>perl -e "chop string;"
Can't modify constant item in chop at -e line 1, near "string;"
Execution of -e aborted due to compilation errors.

##</code><code>##

E:\>perl58 -v

This is perl, v5.8.0 built for MSWin32-x86-multi-thread
(with 1 registered patch, see perl -V for more detail)

...

E:\>perl58 -e "chop string"
Can't modify constant item in chop at -e line 1, at EOF
Execution of -e aborted due to compilation errors.