[etoys-dev] Control-C causing lockup

Bert Freudenberg bert at freudenbergs.de
Thu Oct 1 15:53:55 EDT 2009

On 01.10.2009, at 02:50, David T. Lewis wrote:

> On Wed, Sep 30, 2009 at 12:38:06PM -0400, David T. Lewis wrote:
>> On Wed, Sep 30, 2009 at 12:07:26PM +0200, Bert Freudenberg wrote:
>>> On 30.09.2009, at 05:14, Yoshiki Ohshima wrote:
>>>> At Wed, 30 Sep 2009 15:49:00 +1300,
>>>> Simon Guest wrote:
>>>>> Hi EToy-dev people,
>>>>> I've found an annoying bug introduced in Etoys 4.0 dev somewhere
>>>>> between
>>>>> update 2192 and 2325, which causes control-C to give a hard  
>>>>> lockup.
>>>>> I reported it on the bug tracker,
>>>>> http://tracker.squeakland.org/browse/SQ-484
>>>>> Is that enough?  Or should I also raise it here?  (Like this ;-)
>>>>> Any ideas on the bug?
>>>> The hard lock up part I'm not sure what is causing it, but one  
>>>> thing
>>>> you could do for now is update the image and then turn off
>>>> #automaticPlatformSettings (and swapControlAndAltKeys)  
>>>> preferences to
>>>> use the Alt- key bindings...
>>> No, the hard lockup was caused by an endless recursion.
>>> ExtendedClipboardUnixInterface unexpectedly dispatched back to
>>> Clipboard which dispatched back etc. The Mac interface does not do
>>> such sillyness ;) I'll fix it shortly.
>>> Now, in any case that *should* not cause a hard lockup but for some
>>> reason on the Linux VM it still did not react to Alt-. to break into
>>> the loop.
>>> Ian, any idea? I have seen this before, but never took time to
>>> investigate. Actually I think it did happen on John's VM too but
>>> again, I'm not certain.
>> There was a fix for this sort of problem in Mantis 1041. The patch
>> went into Squeak 3.9, and I am not sure if it has been incorporated
>> into the Etoys image or not. Unfortunately I cannot look into it  
>> right
>> now, but will check later.
> To follow up on the above, I took a look at an Etoys-dev image, and  
> I am
> fairly sure that Mantis 1041 is the cause of this problem. The  
> necessary
> changes are in the VM, and are in Squeak 3.9 and beyond, but are not  
> in
> Etoys. Unfortunately, just loading the old change set from Mantis  
> did not
> fix it, so maybe there is some bit rot or other inconsistency that  
> I'm not
> spotting at the moment.
> Dave

Thanks, David. I opened a ticket for that:


If anybody could adapt the changeset for current Etoys, that would be  

- Bert -

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