Call to custom signal handler fails with "`const_missing': uninitialized 
constant TOP_LEVEL_BINDING (NameError)"
----------------------------------------------------------------------------------------------------------------

                 Key: JRUBY-4283
                 URL: http://jira.codehaus.org/browse/JRUBY-4283
             Project: JRuby
          Issue Type: Bug
    Affects Versions: JRuby 1.4
         Environment: Linux 2.6.24-25-server #1 SMP x86_64 GNU/Linux
ISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu 8.04.3 LTS"
            Reporter: Henrique Manuel Lindgren Amaral Fernandes
            Assignee: Thomas E Enebo


Running the following script and pressing CRTL+C results in the following error 
message being printed to the terminal, instead of "hello handler":

Script:

#!/usr/bin/env jruby

def handler
    puts 'hello handler'
end

trap("INT", "handler")
sleep

Output:

:1:in `const_missing': uninitialized constant TOP_LEVEL_BINDING (NameError)
        from jsignal:28:in `__jtrap'
        from :1:in `call'
        from :1




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