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

[Conrad Taylor]

What should be the exact output?  In Ruby 1.9.1, I see the following output:
$ ruby test.rb
"A"
"B"
"C"
"D"

Note:  When <class>.new is called allocate method is called.  Then the
object's initialize method is called and the
          instance is returned to the caller.

$ macruby test.rb
"HasInit"
"A"
"HasInit"
"B"
"C"
Segmentation fault

Now, changing the init methods to initialize, the following output is
generated:

$ ruby test.rb
"HasInit"
"A"
"HasInit"
"B"
"C"
"D"

$ macruby test.rb
"HasInit"
"A"
"HasInit"
"B"
"C"
"D"

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

-Conrad

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
>> _______________________________________________
>> MacRuby-devel mailing list
>> MacRuby-devel at lists.macosforge.org
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>>
>
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