Andreas posted this to the squeak - vm -dev list. I'm wondering if
any one wants me to build a mac carbon vm with this logic?
Candidates must present a test case or three to confirm it works as
expected on os-x (ppc/macIntel).
Begin forwarded message:
> Hi Guys -
>
> Just FYI, I found a major bug in the callback support I posted
> earlier. The problem occurs if one fails a primitive *after* a
> callback has been invoked like here:
>
> Squeak -> (primitive) -> Plugin
> Plugin -> (callback) -> Squeak
> Plugin <- (return) <- Squeak
> Squeak <- (failure) <- Plugin
>
> In such a case, the method being activated by the primitive failure
> is not the method originally invoking the primitive but rather the
> one that returned from the callback. More technically speaking, the
> interpreter's newMethod isn't preserved which causes the effect
> described above. The attached version fixes the problem by
> preserving newMethod across callback enter/return.
>
> Cheers,
> - Andreas
--
========================================================================
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John M. McIntosh <
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Corporate Smalltalk Consulting Ltd.
http://www.smalltalkconsulting.com========================================================================
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