Check argument definedness in defined?(receiver.method(arg)) by sampokuokkanen · Pull Request #9460 · jruby/jruby

sampokuokkanen · 2026-05-25T03:01:50Z

Mirrors the FCALLNODE path. Fixes test_defined_undefined_argument.

Sample code of the problem:

class Test
  def hello x
    puts "Hello #{x}"
  end
end

p defined? Test.new.hello(hello)

Before this fix: "method", now nil.

Mirrors the FCALLNODE path. Fixes test_defined_undefined_argument.

Check argument definedness in defined?(receiver.method(arg))

7070d83

Mirrors the FCALLNODE path. Fixes test_defined_undefined_argument.

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