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<p>For trace:</p>
<p>Scenario 1 should have been fixed via <span>Kernel-ct.1296. Also, the general debugger chain issue could be solved via the #basicEvaluate:onBehalfOf: approach I proposed here: <span><a href="http://forum.world.st/I-broke-the-debugger-tp5110752p5111016.html" class="OWAAutoLink">Fixing
the infinite debugger chains?</a></span></span></p>
<p><span>Scenario 2 appears, imo, to be caused by the same issue as <span><a href="http://forum.world.st/BUG-REGRESSION-while-debugging-Generator-gt-gt-nextPut-td5108125.html" class="OWAAutoLink">BUG/REGRESSION while debugging Generator >> #nextPut:</a> (that
is, #runUntilErrorOrReturnFrom: might need to detect sender swaps). See changeset in that thread.</span></span></p>
<p><span><span><br>
</span></span></p>
<p><span><span>Best,</span></span></p>
<p>Christoph</p>
<p><span><br>
</span></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>Von:</b> Squeak-dev <squeak-dev-bounces@lists.squeakfoundation.org> im Auftrag von Thiede, Christoph<br>
<b>Gesendet:</b> Freitag, 22. November 2019 15:15:05<br>
<b>An:</b> Squeak Dev<br>
<b>Betreff:</b> [squeak-dev] [BUG(s)] in Context control (#jump, #runUntilErrorOrReturnFrom:)</font>
<div> </div>
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<p>Hi all,</p>
<p><br>
</p>
<p>I would like to report a bug I found related to debugging the debugger. I actually found the issue when debugging the context simulation of "Over", but let's start with a simple example.</p>
<p><br>
</p>
<p><span style="font-size:16pt; font-family:"Calibri Light","Helvetica Light",sans-serif">Scenario 1</span></p>
<p><b>Steps to reproduce:</b></p>
<ul style="margin-bottom:0px; margin-top:0px">
<li>(Save your image, if it contained any valuable information.)</li><li>Type the following into a Workspace:</li></ul>
<p></p>
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<p><span style="font-size:12pt">x := 5.</span></p>
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</blockquote>
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<p><span style="font-size:12pt">thisCon</span><span style="font-size:12pt">text insertSender: (</span><span style="font-size:12pt">Context contextEnsure: [x := 4]).</span></p>
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</p>
<ul style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt; margin-bottom:0px; margin-top:0px">
<li>Debug it and step:
<ul>
<li>(into) #contextEnsure</li><li>(through) #ensure:</li><li>(into) #jump</li><li>step over the implementation, and press (into) while returning.</li></ul>
</li></ul>
<div style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<br>
</div>
<div style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<b>Expected behavior:</b></div>
<div style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
The same should happen as if you would not debug, but normally do the code: It should run without raising any error, and x should finally contain the value 4.</div>
<div style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<br>
</div>
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<b>Actual behavior:</b></div>
<div style="">
<ul style="margin-bottom:0px; margin-top:0px">
<li style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<i>In Trunk:</i>
<ul style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<li>An infinite chain of debuggers appears, making it impossible to reuse the image. If you gain the chance to see any debugger, or to receive a non-empty debug log, you can see there is #<span>errorSubscriptBounds: called from within a context. However, it
is not possible to find out the complete stack of this error. (At least, I did not manage after a few attempts.)</span></li></ul>
</li><li style=""><i>In Squeak 5.1 (Note: You will need to replace here with MethodContext, for compatibility):</i>
<ul>
<li style="">The same error is raised, but instead of endless debuggers, you get endless emergency evaluators:<br>
<img naturalheight="1006" naturalwidth="1104" size="605723" id="img432452" height="180" width="197" style="user-select: none;" tabindex="0" src="cid:2c2ee09f-1f81-4969-a2af-0fac1c093119"><br>
</li></ul>
</li></ul>
<div><br>
</div>
<div><b>Workaround:</b></div>
<div>Modify the #contextEnsure: implementation in the following way:</div>
<div><img naturalheight="391" naturalwidth="1135" size="62762" id="img870277" height="180" width="522" style="user-select: none;" tabindex="0" src="cid:02411c12-9a78-40fe-a3b3-c7f8357c133d"><br>
</div>
</div>
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</p>
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<p></p>
<div></div>
<p></p>
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<p></p>
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<br>
</p>
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<b>Reason:</b></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
As the comment in Context>>#jump states, the receiver context "<span>MUST BE a top context (ie. a suspended context or a abandoned
<i>[sic]</i> context that was jumped out of)", which, in particular, "<span>already has its return value on its stack".<sup>1</sup><span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span>However, in the #contextEnsure: example, ctxt is not a top context because is it still running, and on its top, it does not have a return value but the closure vector<sup>2</sup> {ctxt. chain}. This leads to the fact that #jump pops away this
closure vector so that any attempt to access this vector will result in Context>>#at: to call #<span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px">errorSubscriptBounds:.
I'm not sure where this attempt is made actually, but I suppose each debugger's ContextVariableInspector could do this and so raise another debugger and so forth ...</span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><br>
</span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><b>Considerations:</b></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px">A simple solution would be the workaround presented above.
However, we would not only need to patch #contextOn:do: the same way, we also wondered why the same problem does not also has had any visible impacts on the other senders of #jump in past, which are #restart and #<span>runUntilErrorOrReturnFrom:. The first
refreshes the context and then jumps into it, and from theory, I think it should be possible to call it from a foreign sender in a similar minimal example in order to invalidate the context register. However, I did not manage to construct an appropriate example
yet. The same goes for #runUntilErrorOrReturnFrom:, because when "here jump" is executed, "here" again is neither a sender of the block context, nor it has is return value on stack.</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span>In a nutshell, to us, it has been keeping an open question
so far whether the other senders of #jump are legitime.</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span>Should we maybe add a method like "Context >> jumpWith:
aReturnValue" which would push aReturnValue on the receiver first and then perform the jump? Or could this have any negative impacts if there is indeed already a return value on stack of the receiver?</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><br>
</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><span style="font-size:16pt">Scenario 2</span><br>
</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><b>Steps to reproduce:</b></span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span>The same as Scenario 1, but instead of stepping into
#jump, just step over it.</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><br>
</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><b>Expected behavior:</b></span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span>The same expected behavior as in Scenario 1.</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><br>
</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><b>Actual behavior:
</b>(diff to Actual behavior of Scenario 1 <span style="background-color:rgb(255,255,0)">
highlighted</span> for ease of reading)</span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
</p>
<ul style="margin-bottom:0px; margin-top:0px">
<li style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><i style="">In Trunk:</i></span></span></span></span></span>
<ul style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<li><span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span>An infinite chain of debuggers appears, making it
impossible to reuse the image. If you gain the chance to see any debugger, or to receive a non-empty debug log, you can see there is
<span style="background-color:rgb(255,255,0)">#cannotReturn:to:</span> called from within
<span style="background-color:rgb(255,255,0)">a new process</span>.<br>
</span></span></span></span></span></li></ul>
</li><li style=""><span><i>In Squeak 5.1 <i style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px">
(Note: You will need to replace here with MethodContext, for compatibility):</i></i></span><br>
<ul>
<li style=""><span><span>The same error is raised, but instead of endless debuggers, you get endless emergency evaluators:<br>
</span></span><b><img naturalheight="1000" naturalwidth="1108" size="636021" id="img819991" height="180" width="199" style="user-select: none;" tabindex="0" contextid="img855933" src="cid:f7412be3-907b-441a-8a7e-889cbc88f1cd"></b></li></ul>
</li></ul>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><br>
</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span>Note: This issue continues to exist after applying the
workaround patch from Scenario 1.</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><br>
</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><b>Reason:</b></span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span>No idea. After applying the workaround from above, I
tried to debug #doStep before stepping over the #jump per button, but this lead me to some kind of infinite loop: When I debug the whole debugging logic via Process>>#completeStep: and
<span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px">
Process>></span>#complete: down to Context>>#runUntilErrorOrReturnFrom: and there step *into* the "self jump" statement, the error does not occur. When I step *over* this line instead, the same error occurs. I also tried to debug that #doStep in the second
debugger window again, but this bug seems to be a real Heisenbug - it only occurs when you do *not* step into the relevant #jump call.</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><br>
</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span><b>Considerations:</b></span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span><span><span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><span>As mentioned above, we also could not yet explain whether
all calls to #jump in #runUntilErrorOrReturnFrom: are valid with regard to the "return value on stack" precondition. Maybe there is a connection?</span></span></span></span></span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<br>
</p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<br>
</p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
We will keep investigating the issue, but any help is appreciated, of course!</p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<br>
</p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<sup>1</sup> <span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px">I'm afraid the example method "</span><span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px">Interpreter>>primitiveSuspend"
further mentioned in the comment does no longer exist.</span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<span style="font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:16px"><sup>2</sup> Is "closure vector" an official term? If not, what would be the
official term? :)</span></p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
<br>
</p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
Best,</p>
<p style="color:rgb(0,0,0); font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols; font-size:12pt">
Christoph</p>
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