Issue #20222 has been updated by alanwu (Alan Wu). Seems like a valid optimization to me and is similar to identity of small integers versus heap allocated bignums. ---------------------------------------- Misc #20222: Dedup-ing clarification https://bugs.ruby-lang.org/issues/20222#change-106635 * Author: kddnewton (Kevin Newton) * Status: Open * Priority: Normal ---------------------------------------- ``` ruby source = %q{"foo".freeze.equal?("foo".freeze)} RubyVM::InstructionSequence.compile(source).eval # => true RubyVM::InstructionSequence.compile_option = false RubyVM::InstructionSequence.compile(source).eval # => false ``` `"foo".freeze` uses `opt_str_freeze` when optimizations are turned on, which also deduplicates. This means this code has different behavior depending on if optimizations are turned on or off. To be clear, I'm not saying whether or not this is a problem. I'm asking if this is desired behavior? -- https://bugs.ruby-lang.org/