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Re: GOOPS-based SRFI-35 implementation

From: Mikael Djurfeldt
Subject: Re: GOOPS-based SRFI-35 implementation
Date: Thu, 11 Mar 2004 10:38:14 -0500
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux)

Andreas Rottmann <address@hidden> writes:

> Here, we given your proposed model, we'd get this hierarchy:
> (define-class &c ())
> (define-class &c1 (&c))
> (define-class &c2 (&c))
> (define-class &c3 (&c1 &c2)) ;; Class constructed for v3
> (define-class &c5 (&c2 &c3)) ;; Class constructed for v5
> This will cause GOOPS to barf: "merge-lists: Inconsistent precedence graph"
> I didn't see an obvious solution to this problem.

Well, this is a bug in goops.scm:compute-std-cpl.  The solution is to
fix the bug.  However, this is non-trivial, and I don't have time
right now to fix it myself.  The algorithm should be the C3 algorithm


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