Issue #9151 has been reported by sam.saffron (Sam Saffron). ---------------------------------------- Bug #9151: Segfault in Ruby head https://bugs.ruby-lang.org/issues/9151 Author: sam.saffron (Sam Saffron) Status: Open Priority: Normal Assignee: Category: Target version: ruby -v: ruby-head Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN Following code causes a segfault in ruby head on x64: class A attr_accessor :b def hash [b,""].hash end end class B attr_accessor :a def hash [a,""].hash end end a = A.new b = B.new a.b = b b.a = a p a.hash p b.hash p [a,"hello"].hash == [b,"world"].hash -- http://bugs.ruby-lang.org/