[MacRuby-devel] Super not passing init: through to NSObject correctly?

[Laurent Sansonetti]

On Oct 5, 2009, at 8:01 PM, Conrad Taylor wrote:
> What should be the exact output?  In Ruby 1.9.1, I see the following  
> output:
>
> $ ruby test.rb
> "A"
> "B"
> "C"
> "D"

[snip]

#init is actually a NSObject thing. MacRuby's default initializer  
calls it.

The mainstream Ruby doesn't, which explains your output.

> Next, will there be an implementation of BasicObject in MacRuby as  
> it is in Ruby 1.9.x?

There is one already (maybe not 100% compatible):

$ macruby -e "p BasicObject"
BasicObject

Laurent

> On Mon, Oct 5, 2009 at 7:45 PM, Laurent Sansonetti <lsansonetti at apple.com 
> > wrote:
> Thanks for the report, I added your snippet in our test suite.
>
> At a glance it looks like an infinite loop in the dispatcher.  
> Definitely a bug :)
>
> Laurent
>
>
> On Oct 5, 2009, at 6:37 PM, Michael Shapiro wrote:
>
> Hi all,
> I searched a few months of the list archives and trac, but wasn't  
> able to find reference to this.
>
> Calling `super` inside of an overridden #init function where no ruby  
> ancestors define #init causes a segmentation fault. If I'm not  
> mistaken, shouldn't the init: message be passed to NSObject?
>
> ---------------------------------------------------------
> class HasInit
> def init
>  super
>  p 'HasInit'
>  self
> end
> end
>
> class A < HasInit; end
>
> class B < A; end
>
> A.new
> p 'A'
> B.new
> p 'B'
>
> class HasNoInit; end
>
> class C < HasNoInit; end
>
> class D < C
> def init
>  super
>  self
> end
> end
>
> C.new
> p 'C'
> D.new
> p 'D'
> ---------------------------------------------------------
>
> You should see the segfault happen when trying to init D, but  
> HasInit passes the message through to NSObject just fine, it seems.
>
> Tested with the 2009-10-05-1158 nightly.
>
> Thanks!
> --Mike
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