[Vm-dev] VM crash in the Squeak3D plugin, the sequeal

[David T. Lewis]

Hi Eliot,

Excellent. I guess it's just me that is outdated ;-)

Sorry for the misinformation,

Dave

>  Hi Dave,
>
> On Thu, Jan 9, 2020 at 6:04 AM David T. Lewis <lewis at mail.msen.com> wrote:
>
>>
>> On Thu, Jan 09, 2020 at 12:57:23PM +0100, St??phane Rollandin wrote:
>> >
>> > Hello all,
>> >
>> > I have had a report that the code for my Balloon3D-based game (at
>> > http://www.zogotounga.net/comp/guardians.htm) does not work at all on
>> > 64-bit images.
>> >
>> > The report was about a linux system, and indeed I could confirm that
>> it
>> > also applies on Windows.
>> >
>> > I have uploaded a ready-to-crash trunk image here, with instructions:
>> > http://www.zogotounga.net/swap/crash-64.zip
>> >
>> > Note that no crash dump is produced.
>>
>>
>> Hi Stef,
>>
>> I am fairly sure that the Squeak3D plugin was never updated for 64-bit
>> platforms, so it probably will not work on any 64-bit VM.
>>
>> Updating a plugin like this mostly requires finding and fixing all the
>> places where pointer values are assigned to C int variables. For most
>> of the plugins, this involved some changes to both the platform support
>> code (C code in git) as well as to the plugin in VMMaker.
>>
>> Is anyone interested in taking on a worthwhile VM project with
>> manageable
>> scope? Updating the Squeak3D plugin would be a good project. I can give
>> some tips and advice if anyone wants to give it a try.
>>
>
> The Squeak3D polygon was updated for 64 bits. It is built and included as
> an external plugin on all 32 bit and 64 bit Spur VMs. It builds with only
> one (expected) warning:
>
> ../../src/plugins/Squeak3D/Squeak3D.c:6:13: warning: unused variable
> '__buildInfo' [-Wunused-variable]
> 1 warning generated.
>
> So whatever the issue is is deeper than simply not having been updated.
>
> _,,,^..^,,,_
> best, Eliot
>