From: asterite+rubybugs@... Date: 2019-10-14T20:39:42+00:00 Subject: [ruby-core:95318] [Ruby master Bug#16250] IRB can't print recursive Arrays or Hashes Issue #16250 has been reported by the-asterite (Ary Borenszweig). ---------------------------------------- Bug #16250: IRB can't print recursive Arrays or Hashes https://bugs.ruby-lang.org/issues/16250 * Author: the-asterite (Ary Borenszweig) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.7.0dev (2019-06-04 trunk 4b7213a85a) [x86_64-darwin18] * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN ---------------------------------------- This is on Ruby 2.7.0dev but I'm almost sure it happens on master because this code has no check for recursion: https://github.com/ruby/ruby/blob/c3a626030235c0349e14c6bc07177810daee841c/lib/irb/color.rb#L73-L88 Code to reproduce: ~~~ $ irb irb(main):001:0> a = [] => [] irb(main):002:0> a << a Traceback (most recent call last): 16: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `all?' 15: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `block in inspect_colorable?' 14: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `inspect_colorable?' 13: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `all?' 12: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `block in inspect_colorable?' 11: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `inspect_colorable?' 10: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `all?' 9: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `block in inspect_colorable?' 8: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `inspect_colorable?' 7: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `all?' 6: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `block in inspect_colorable?' 5: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `inspect_colorable?' 4: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `all?' 3: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `block in inspect_colorable?' 2: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `inspect_colorable?' 1: from /Users/asterite/.rbenv/versions/2.7.0-dev/lib/ruby/2.7.0/irb/color.rb:80:in `all?' SystemStackError (stack level too deep) Maybe IRB bug! ~~~ Suggested fix: keep a list of visited arrays and hashes. I will try to submit a patch. -- https://bugs.ruby-lang.org/ Unsubscribe: