Issue #20748 has been updated by luke-gru (Luke Gruber). I agree it's weird but it could cause an incompatibility I guess, `defined?()` is a weird one for sure. ---------------------------------------- Bug #20748: Issue with defined? given method call with block in prism compiler https://bugs.ruby-lang.org/issues/20748#change-109802 * Author: luke-gru (Luke Gruber) * Status: Open * Assignee: kddnewton (Kevin Newton) * ruby -v: 3.4.0dev * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- test.rb ```ruby puts defined?(undefined_method(){}) ``` ``` ./ruby --parser=parse.y -I../ruby/lib -I. -I.ext/x86_64-linux -I.ext/common -r./x86_64-linux-fake ../ruby/test.rb expression ``` ``` ./ruby --parser=prism -I../ruby/lib -I. -I.ext/x86_64-linux -I.ext/common -r./x86_64-linux-fake ../ruby/test.rb # empty line ``` -- https://bugs.ruby-lang.org/