[squeak-dev] Re: [Vm-dev] Bug in writing compressed stream when saving an mcz (was: New Cog VMs available...)

David T. Lewis lewis at mail.msen.com
Sun Jul 20 14:30:27 UTC 2014

On Fri, Jul 18, 2014 at 02:06:18PM -0700, Eliot Miranda wrote:
> On Fri, Jul 18, 2014 at 1:51 PM, David T. Lewis <lewis at mail.msen.com> wrote:
> >
> > Note that the primitive fallback code is probably still broken, but
> > perhaps that's a separate issue entirely.
> >
> I'm not convinced yet.  Certainly if the primitives are all removed and the
> image still fails then the fall;back code is broken.  But we need to
> determine that carefully.

To follow up on this WRT the Smalltalk that runs if the primitive fails or if
the plugin is not present:

I made a VM with no ZipPlugin, and tested with this. The failure occurs exactly
as before. So the presence of a working ZipPlugin is masking an issue in the
image. The issue appears if the plugin is absent, and it appears if the primitive
fails due the the ivar issue that we have been discussing. The problem is hidden
when a working ZipPlugin is present.

Sorry I still can't offer a test case, other than the "how to make it fail recipe"
previously discussed.


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