[m-rev.] for review: explicitly free dead cells

[Peter Wang]

On 2008-08-25, Zoltan Somogyi <zs at csse.unimelb.edu.au> wrote:
> On 21-Aug-2008, Peter Wang <novalazy at gmail.com> wrote:
> > Zoltan, do you think it will be hard to solve the problem noted in
> > unify_gen.m?
> 
> What problem noted in unify_gen.m?

Nevermind.  I thought there was a difficulty in freeing a dead cell,
because some of its fields might not actually be extracted yet.  But of
course the same problem would occur if we were to reuse the dead cell,
so I can just reuse the code that handles that.

Peter

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