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Bug #7216
closedobject.c defines clone method for objects that cannot be cloned.
Description
As the subject says, in object.c, the clone method is defined and then special cased for certain object types. The end result is that all respond_to?(:clone) returns true for all objects, but then thows an fatal error in some cases. Here is an appropriate example:
a = true
=> true
a.respond_to?(:clone)
=> true
a.clone
TypeError: can't clone TrueClass
from (irb):3:in `clone'
from (irb):3
Ultimately, the objects that do no respond to 'clone' should have it removed so that the respond_to? method returns false.
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