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<p>Hi,</p>
<div class="moz-cite-prefix">On 22/09/2025 10:10 AM, H. Hirzel via
Cuis-dev wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAGQxfViUe4U68vLWTn8_XJM4gaaO0nXBtYVWQEGw5usMja-+KQ@mail.gmail.com">
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<div>I could identify the change set which causes the problem,
it is from last Wednesday<br>
</div>
<div><br>
</div>
<div>CoreUpdates\<a
href="http://7580-ReferenceStream-61BitSmallIntegers-fix-JuanVuletich-2025Sep17-08h16m-jmv.001.cs.st"
moz-do-not-send="true">7580-ReferenceStream-61BitSmallIntegers-fix-JuanVuletich-2025Sep17-08h16m-jmv.001.cs.st</a></div>
<div><br>
</div>
<div>It introduces a new version of #readInteger and
writeInteger: in the class DataStream.</div>
<div>If I undo the change of this change set it works.</div>
<div><br>
</div>
<div>--Hannes<br>
</div>
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<p><br>
</p>
<p>As you saw in that changeset (file name, comments in code, commit
message), and as exemplified in the test added to BaseImageTests
shortly after, what that code does is not to cause a problem, but
to fix a serious bug that has been around for a long time and that
is still present in Squeak. Just try to serialize an object with a
largish SmallInteger and see what you get back.</p>
<p>Anyway. I just pushed a better implementation that uses a
different format for 32bit SmallIntegers than from larger ones.
This brings back compatibility with the badly broken Squeak
format, although it obviously can't bring back the bits that
Squeak discarded when saving the file, and results will be wrong
unless you're lucky enough to only use small SmallIntegers.</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:CAGQxfViUe4U68vLWTn8_XJM4gaaO0nXBtYVWQEGw5usMja-+KQ@mail.gmail.com">
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<div dir="ltr" class="gmail_attr">On Mon, Sep 22, 2025 at
2:36 PM H. Hirzel <<a href="mailto:hannes.hirzel@gmail.com"
moz-do-not-send="true" class="moz-txt-link-freetext">hannes.hirzel@gmail.com</a>>
wrote:<br>
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<div>I am currently identifying which change set causes the
problem.</div>
<div>So far Cuis update 7523 still works.<br>
</div>
<div><br>
</div>
<div>This means if I produce a file '
aDictWithByteArraysFromSq.obj' in Squeak I can read it in
Cuis 7523</div>
<div><br>
</div>
<div>So the problem has been introduced in one of the last
60 updates.</div>
<div><br>
</div>
<div><br>
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<div>"Squeak"<br>
dict := Dictionary new.<br>
dict at: 1 put: #[1 2 3 4].<br>
dict at: 2 put: #[5 6 7 8].<br>
dict at: 3 put: #[10 20 30 40].<br>
<br>
fileStream := ReferenceStream fileNamed:
'aDictWithByteArraysFromSq.obj'.<br>
objectToSave := dict.<br>
fileStream nextPut: objectToSave.<br>
fileStream close</div>
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<div> </div>
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<div>"-----------------------------------------------"<br>
</div>
<div>"Restore in Cuis"<br>
</div>
<div>ReferenceStream restoreFromFile:
('aDictWithByteArraysFromSq.obj' asFileEntry).<br>
<br>
"Result<br>
OK in Cuis 7523<br>
NOT OK in Cuis 7584"</div>
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<pre class="moz-signature" cols="72">--
Juan Vuletich
<a class="moz-txt-link-abbreviated" href="http://www.cuis.st">www.cuis.st</a>
github.com/jvuletich
researchgate.net/profile/Juan-Vuletich
independent.academia.edu/JuanVuletich
patents.justia.com/inventor/juan-manuel-vuletich</pre>
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