Re: eieio.el: initialize-instance: strange behavior with simple class hierarchy

Hi,

Thanks for the detailed bug report.

Your multiple inheritance example stymied the very simple duplicate
removal system that was already in there.  I added your example to the
test suite, and fixed the bug.  It should be in CVS now.

Thanks
Eric

On Sat, 2009-09-26 at 03:46 +0200, Jan Moringen wrote:
> Hi,
> 
> I think I may have found a bug in EIEIO. If it is not a bug, it is at
> least surprising behavior.
> 
> I discovered the problem when working with a class hierarchy that looks
> like this
> 
> a
> +-d
> 
> b
> +-c
>   +-d
> 
> a and b have initialize-instance :after methods, d has a primary
> initialize-instance method.
> 
> When creating a d object, I expect the constructors to run as follows:
> 
>      1. (initialize-instance d)
>      2. (initialize-instance b)
>      3. (initialize-instance a)
> 
> or
> 
>      1. (initialize-instance d) 
>      2. (initialize-instance a) 
>      3. (initialize-instance b)
> 
> but what really happens is
> 
>      1. (initialize-instance d) 
>      2. (initialize-instance b) 
>      3. (initialize-instance a)
>      4. (initialize-instance b)
>      5. (initialize-instance a)
> 
> I think, this is wrong, but maybe I did not understand :after or
> call-next-method correctly.
> 
> Redefining the involved classes and methods changes something and
> sometimes makes the duplicate runs go away.
> 
> The attached code should produce the problem with CVS CEDET.
> 
> Any help would be greatly appreciated.
> 
> Kind regards,
> Jan
> ------------------------------------------------------------------------------
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