[Vm-dev] Fwd: [squeak-dev] Image crashes just after start-up
andreas.raab at gmx.de
Wed Apr 16 17:49:08 UTC 2008
One thing that comes to mind is that there have been BitBlt versions
been flying around a while ago (distributed with the Freetype stuff). It
would be worthwhile to remove *all* DLLs/SOs next to the Squeak VM to
make sure none of these is accidentally picked up.
John M McIntosh wrote:
> Begin forwarded message:
>> From: David Röthlisberger <squeak at c3com.ch>
>> Date: April 16, 2008 1:15:57 AM PDT (CA)
>> To: johnmci at smalltalkconsulting.com
>> Subject: Re: [squeak-dev] Image crashes just after start-up
>> Hi John,
>>> Ok, so does this VM work with a base image, or it only a problem with
>>> your image?
>> The VM works well with a normal image, it's only a problem with this
>> specific image.
>> And even for that image it worked well for a couple of weeks. Then I
>> implemented an
>> application drawing a graph on a BalloonCanvas. Whenever I execute
>> this application,
>> the image crashes. Sometimes directly after starting the application,
>> but in most
>> cases I can use the app without problems, but when I then save the
>> image after having
>> executed one specific feature, it crashes on image start-up.
>> I could track the error down to the method FormCanvas >>
>> Whenever this method gets executed with some specific parameters, then
>> the crash will
>> happen. It seems to me that the bounds parameter has corrupt data, eg.
>> numbers not
>> properly stored. But how this happens I don't know.
>>> usually points to a problem with the VM crashing either because the
>>> image is corrupt or you
>>> have corrupted memory via an FFI call, or perhaps passing bad data to
>>> the sound system.
>> I don't use FFI, neither I pass data to the sound system, so probably
>> this means that
>> the image is corrupt. I guess that some objects get created that are
>> corrupt. But why
>> can this happen?
>>> I also note you run Application Enhancer, perhaps turn that off and
>>> see if it changes anything?
>> ok, I turned it off, but this doesn't make a difference.
> John M. McIntosh <johnmci at smalltalkconsulting.com>
> Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com
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