[squeak-dev] Wrong method source pointer in Squeak5.2

David T. Lewis lewis at mail.msen.com
Mon Dec 17 01:07:16 UTC 2018

Hi Max,

I'm on ubuntu 16.04 LTS.

But it's probably some mistake that I am making. One thing I noticed - when
I do the checkout of the Seaside version, I end up with a detached head, is
this expected? Here is what I see on the terminal:

  lewis at lewis-Gazelle-Pro:~/squeak/Squeak5.2/Seaside-TEST/Seaside$ git status
  On branch master
  Your branch is up-to-date with 'origin/master'.
  nothing to commit, working directory clean
  lewis at lewis-Gazelle-Pro:~/squeak/Squeak5.2/Seaside-TEST/Seaside$ git checkout -f master
  Already on 'master'
  Your branch is up-to-date with 'origin/master'.
  lewis at lewis-Gazelle-Pro:~/squeak/Squeak5.2/Seaside-TEST/Seaside$ git checkout 9cb54a7b14cd254ef318294905c4e8dda8dd9f79
  Note: checking out '9cb54a7b14cd254ef318294905c4e8dda8dd9f79'.
  You are in 'detached HEAD' state. You can look around, make experimental
  changes and commit them, and you can discard any commits you make in this
  state without impacting any branches by performing another checkout.
  If you want to create a new branch to retain commits you create, you may
  do so (now or later) by using -b with the checkout command again. Example:
    git checkout -b <new-branch-name>
  HEAD is now at 9cb54a7... Merge pull request #1071 from jecisc/1070-Seaside-Tests-REST-is-never-referenced
  lewis at lewis-Gazelle-Pro:~/squeak/Squeak5.2/Seaside-TEST/Seaside$ 

I may not have time to follow up on this in the next couple of days,
but the problem that you spotted does sound serious. It suggests that
the changes file is getting corrupted, and that is not supposed to
be possible.


On Sun, Dec 16, 2018 at 11:04:11PM +0100, Max Leske wrote:
> (resending because of wrong subject, sorry)
> Hi Dave,
> I just retested loading in Ubuntu 17.04 (32-bits) without problems. 
> Maybe you didn't checkout the commit I referenced? I realise there's a 
> `cd Seaside` missing before the `git checkout`.
> What's the load error about? What system are you using exactly?
> Cheers,
> Max
> On 16 Dec 2018, at 20:12, squeak-dev-request at lists.squeakfoundation.org 
> wrote:
> >I'm running into an error related to Metacello loading when I do the
> >run.sh script in the recipe below, screen shot attached. I am running
> >on Linux.
> >
> >It looks like I am missing something in the intial setup, can you give
> >me a pointer?
> >
> >Thanks.
> >Dave
> >
> >On Sun, Dec 16, 2018 at 06:14:47PM +0100, Max Leske wrote:
> >
> >>Hi,
> >>
> >>We have an issue in Seaside where a loaded test method holds a bad
> >>source pointer. We only noticed because this method accesses the
> >>debugger map.
> >>
> >>How to reproduce:
> >>
> >>1. clone SmalltalkCI:
> >>	git clone git at github.com:hpi-swa/smalltalkCI.git
> >>2. clone Seaside:
> >>	git clone git at github.com:SeasideSt/Seaside.git;
> >>	git checkout 9cb54a7b14cd254ef318294905c4e8dda8dd9f79
> >>3. install Seaside in Squeak5.2:
> >>	<path to SmalltalkCI>/run.sh --headful -s Squeak-5.2 <path to
> >>Seaside>/.smalltalk.ston
> >>4. Run the test WAPharoDebuggerTest>>testNamedTempAt and you'll see a
> >>debugger pop up for an UndeclaredVariable. The source lookup is
> >>performed in the changes file but in the middle of a chunk of binary
> >>(font) data.
> >>
> >>I can can only speculate that some of that binary data introduces 
> >>random
> >>chunks which messes with the offsets.
> >>
> >>We're adding a workaround for that particular test for now.
> >>
> >>
> >>Let me know if I can help track down the issue.
> >>
> >>Cheers,
> >>Max


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