[perl #125814] .chop(9999999999999999999999999999999999999999999999999) does not chop

[via RT]

# New Ticket Created by  Alex Jakimenko 
# Please include the string:  [perl #125814]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=125814 >


Code:
say 'xx'.chop(999999999999999999999999999999999999999999999999).perl;
say 'xx'.chop(9999999999999999999999999999999999999999999999999).perl;


Result:
""
"xx"