#402: "unrecognized selector" error if overriding Object#dup -------------------------------+-------------------------------------------- Reporter: pwilson@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: Component: MacRuby | Keywords: -------------------------------+-------------------------------------------- Given the following code: {{{ #! /usr/bin/ruby -w class MyClass def dup super end end a = MyClass.new p a b = a.dup p b }}} I get this fatal exception using the Oct 24 nightly build of MacRuby: {{{ 2009-10-24 22:45:23.316 macruby[7029:903] -[MyClass copyWithZone:]: unrecognized selector sent to instance 0x2029be0 2009-10-24 22:45:23.321 macruby[7029:903] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[MyClass copyWithZone:]: unrecognized selector sent to instance 0x2029be0' *** Call stack at first throw: ( 0 CoreFoundation 0x9151a40a __raiseError + 410 1 libobjc.A.dylib 0x92dac509 objc_exception_throw + 56 2 CoreFoundation 0x9156690b -[NSObject(NSObject) doesNotRecognizeSelector:] + 187 3 CoreFoundation 0x914c1db6 ___forwarding___ + 950 4 CoreFoundation 0x914c1982 _CF_forwarding_prep_0 + 50 5 CoreFoundation 0x914ad7ea -[NSObject(NSObject) copy] + 42 6 libmacruby.dylib 0x0017ae7e rb_vm_dispatch + 8622 7 ??? 0x00e3e24b 0x0 + 14934603 8 ??? 0x00e3e17a 0x0 + 14934394 9 libmacruby.dylib 0x0004192b ruby_run_node + 91 10 macruby 0x00001c98 main + 184 11 macruby 0x00001bd5 start + 53 12 ??? 0x00000002 0x0 + 2 ) Killed }}} The code works as expected when run with Ruby 1.8.7. It also works without the overridden 'dup' method. -- Ticket URL: <http://www.macruby.org/trac/ticket/402> MacRuby <http://macruby.org/>