#307: eval destroys a singleton attribute (Segmentation fault) ------------------------+--------------------------------------------------- Reporter: dev@… | Owner: lsansonetti@… Type: defect | Status: new Priority: major | Milestone: MacRuby 0.5 Component: MacRuby | Keywords: eval ------------------------+--------------------------------------------------- hotconsole crashes after entering at least one expression and calling the 'clear'-command from menu so I tried to narrow the problem to: {{{ require 'hotcocoa' include HotCocoa class Test def initialize @win = window( :title => "HotConsole") do |win| # win.will_close { exit } end class << @win attr_accessor :target end @win.target = self end def run $stderr.puts @win.target.inspect # the eval in the next line destroys the @win.target. Disable it and everything works fine! $stderr.puts eval("42", TOPLEVEL_BINDING.dup, 'hotconsole', 100) # the next line crashes with: unknown: [BUG] Segmentation fault $stderr.puts @win.target.inspect $stderr.puts "everything is fine!" exit end end class Application def start application :name => "HotConsole" do |app| app.delegate = self Test.new.run end end end Application.new.start }}} gives the result: {{{ #-<Test:0x8004450a0> 42 unknown: [BUG] Segmentation fault MacRuby version 0.5 (ruby 1.9.0) [universal-darwin9.0, x86_64] Abort trap }}} Unfortunately enabling the "win.will_close..." causes the Segmentation fault to disappear on my system, so I hope other people will see the same behaviour! (obvisously this is memory layout dependant) BTW, I didn´t use NSLog because it crashes on my system: {{{ macruby -e "framework 'Cocoa'; NSLog 'test'" }}} gives: {{{ unknown: [BUG] Segmentation fault MacRuby version 0.5 (ruby 1.9.0) [universal-darwin9.0, x86_64] Abort trap }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/307> MacRuby <http://macruby.org/>