{"record":{"id":"a905f5bf0985240b","repo":"ruby/rubygems","slug":"undefined-class-to-s-inspect","errorCode":null,"errorMessage":"Undefined class #{to_s.inspect}","messagePattern":"Undefined class #(.+?)","errorType":"exception","errorClass":"ArgumentError","httpStatus":null,"severity":"error","filePath":"lib/rubygems/safe_marshal/visitors/to_ruby.rb","lineNumber":296,"sourceCode":"            push_stack :default\n            hash.default = visit(o.default)\n          end\n\n          hash\n        else\n          raise UnsupportedError.new(\"Unsupported user class #{resolve_class(r.name)} in marshal stream\", stack: formatted_stack)\n        end\n      end\n\n      def resolve_class(n)\n        @class_cache[n] ||= begin\n          to_s = resolve_symbol_name(n)\n          raise UnpermittedClassError.new(name: to_s, stack: formatted_stack) unless @permitted_classes.include?(to_s)\n          visit_symbol_type(n)\n          begin\n            ::Object.const_get(to_s)\n          rescue NameError\n            raise ArgumentError, \"Undefined class #{to_s.inspect}\"\n          end\n        end\n      end\n\n      class RationalCompat\n        def marshal_load(s)\n          num, den = s\n          raise ArgumentError, \"Expected 2 ints\" unless s.size == 2 && num.is_a?(Integer) && den.is_a?(Integer)\n          Rational(num, den)\n        end\n      end\n      private_constant :RationalCompat\n\n      COMPAT_CLASSES = {}.tap do |h|\n        h[Rational] = RationalCompat\n      end.compare_by_identity.freeze\n      private_constant :COMPAT_CLASSES\n","sourceCodeStart":278,"sourceCodeEnd":314,"githubUrl":"https://github.com/ruby/rubygems/blob/86cbb817a38ce8477b181c17467a703ded3f2be8/lib/rubygems/safe_marshal/visitors/to_ruby.rb#L278-L314","documentation":"Error \"Undefined class #{to_s.inspect}\" thrown in ruby/rubygems.","triggerScenarios":"Thrown at lib/rubygems/safe_marshal/visitors/to_ruby.rb:296 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["The metadata references a class that is not defined; rebuild the gem with a current RubyGems"],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"86cbb817a38ce8477b181c17467a703ded3f2be8","analyzedAt":"2026-08-23T06:27:48.159Z","schemaVersion":2},"datasetVersion":"2026-08-23T08:06:27.607Z"}