Bug 520987

Description of problem:

The version of Ruby packaged on FC11 contains a bug in the use of short-named constants. This breaks certain Ruby applications that depend on this feature, including the Metasploit Framework. Gentoo and Ubuntu have now fixed their packages, but FC/RH has not yet.

Version-Release number of selected component (if applicable): 1.8.6


How reproducible:

Place this into a ruby script and run it:

#
# Check for the ugly 1.8.6/1.8.7 short-named constants bug
#

class ConstBugTestA
	Const = 'A'
	def test
		Const == 'A'
	end
end

ConstBugTestC = ConstBugTestA.dup

class ConstBugTestB < ConstBugTestC
	Const = 'B'
end

def ruby_187_const_bug
	bugged = false

	begin
		ConstBugTestA.new.test()
		ConstBugTestB.new.test()
	rescue ::NameError
		bugged = true
	end
	
	bugged
end

if(ruby_187_const_bug())
	$stderr.puts "This interpreter is broken!"
end


Alternatively, just run Metasploit:

Steps to Reproduce:
1. svn co https://metasploit.com/svn/framework3/trunk/ msf3/
2. ruby msf3/msfconsole
3. Look for the warning
  
Actual results:

Big warning message

Expected results:

No warning and working code

Additional info:

Solution:
https://bugs.launchpad.net/bugs/282302