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<div>Hi all, I don't know if someone of you saw this error message recently?</div>
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<div><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;">MultiByteFileStream(Object)>>error: <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;">primGetPosition:
failed</span></span></div>
<div><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 style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">(Just
for the case this should be a VM-related problem, I'm using OpenSmalltalk <span>201912311458 on Win 1903.)</span></span></span></div>
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<div>I experienced it various times, and each time, once the error had occurred once, no more access to the sources file was possible. I could neither select any message then nor debug, even quitting the image without saving was not possible; each attempt raised the
same error again.</div>
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<div>Now I finally discovered a scenario to reproduce this issue:</div>
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<div>(Disclaimer: This might crash your image! Save *before* doing this!)</div>
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<div>Debug the following, step over #unload, and during then loading happens, interrupt the process via cmd-dot:</div>
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<div><img size="167911" contenttype="image/png" id="img267934" style="user-select: none;" contextid="img562105" height="180" width="302" sizeoption="small" tabindex="0" src="cid:29c3b6a6-5fdf-498d-a47b-a9dd34666273"></div>
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<div>Please note that you will probably only have one chance to reproduce it, because the package will be cached.</div>
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<div>If you now open a browser, for example, selecting any message will raise the <span>#primGetPosition: failure.</span></div>
<div><span>However, if you continue from the interrupt, your image won't suffer consequential damages.</span></div>
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<div>This is a real problem because especially on <a href="http://forum.world.st/The-Inbox-ShoutCore-ct-78-mcz-tp5109909p5110050.html" class="OWAAutoLink">
slower images</a>, various tests can fail and damage your image because of their timeout limits.</div>
<div>In a fresh (!) Trunk image, I could reproduce this several times by running MCPackageTest or MCFileInTest.</div>
<div>Increasing their timeouts would be a dirty workaround for the moment.</div>
<div>I also experienced the same problem in other projects where related MC operations were run in a timeout-limited context.</div>
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<div>So, how can we fix it?</div>
<div>I assume that it is problematic if the file pointer does not get closed correctly.</div>
<div>Would you consider a critical block an appropriate solution to fix the issue?</div>
<div>But how would you write one the best way (never faced that stuff before), and doesn't this have undesirable disadvantages such as restricted debugging possibilities?</div>
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<div>Questions over questions :-) Any help or response will be appreciated!</div>
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<div>Best,</div>
<div>Christoph</div>
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