Bugs item #9359, was opened at 2007-03-18 17:22
You can respond by visiting: 
http://rubyforge.org/tracker/?func=detail&atid=1698&aid=9359&group_id=426

Category: Standard Library
Group: 1.8.4
Status: Open
Resolution: None
Priority: 3
Submitted By: Dan Hutchings (dhutchin)
Assigned to: Nobody (None)
Summary: Set.freeze not behaving as expected

Initial Comment:
s = Set.new
s << 1
s << 2
s.freeze
s << 3 # shouldn't this raise an exception? it doesn't

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You can respond by visiting: 
http://rubyforge.org/tracker/?func=detail&atid=1698&aid=9359&group_id=426