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<p class="MsoNormal">Hi Juan,</p>
<p class="MsoNormal">Here’s a fix of a nasty bug in Context Part>>contextEnsure:</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It shows while debugging or stepping; try this sequence that would get you right before the bug:</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">p _ [ContextPart contextEnsure: [42]] newProcess.</p>
<p class="MsoNormal">[p suspendedContext selectorToSendOrSelf = #jump] whileFalse: [p step].</p>
<p class="MsoNormal">[p suspendedContext selectorToSendOrSelf = #privSender:] whileFalse: [p step].</p>
<p class="MsoNormal">3 timesRepeat: [p stepToCallee].</p>
<p class="MsoNormal">p step.</p>
<p class="MsoNormal">p suspendedContext explore.</p>
<p class="MsoNormal">p suspendedContext method inspect.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please notice that the suspendedContext only has stackp=2 and hence the next instruction will fail in the next step:</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">p step</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The root cause is contextEnsure: mistakenly treats ctxt as a top context (i.e. one that has a return value already at the top of the stack); the fix is trivial: add a fake return value – see enclosed.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best,</p>
<p class="MsoNoSpacing"><span lang="CS">--</span></p>
<p class="MsoNoSpacing"><strong><span style="font-family:"Calibri Light",sans-serif;color:#333333;font-weight:normal">Jaromír Matas</span></strong><span style="font-family:"Calibri Light",sans-serif;color:#555555"><o:p></o:p></span></p>
<p class="MsoNoSpacing"><span style="font-family:"Calibri Light",sans-serif;color:#2E75B6">mail@jaromir.net<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#8FAADC"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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