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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Tony:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Yes, it is from the HEAD as of 17 December 2013.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Using the
<b>@M3paranoidgc</b> flag,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">On
<b>32-bit Windows XP</b> I get:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">C:\cm3\Sandbox\cm3\m3-libs\m3core\tests\thread\NT386><b>threadtest.exe @M3paranoidgc</b><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Writing file...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating read threads...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating fork threads...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating alloc threads...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating lock threads...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">running...printing oldest/median age/newest<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** Attempt to reference an illegal memory location.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** pc = 0x431755 = RefSanityCheck + 0x2c in ..\src\runtime\common\RTCollector.m3<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** <*ASSERT*> failed.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\thread\WIN32\ThreadWin32.m3", line 823<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** <*ASSERT*> failed.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\thread\WIN32\ThreadWin32.m3", line 823<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">This last assert repeats indefinitely until you press CTRL-C.</span></i></b><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">On
<b>64-bit Windows 7</b> I get:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">C:\cm3\Sandbox\m3-libs\m3core\tests\thread\NT386><b>threadtest.exe @M3paranoidgc</b><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Writing file...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating read threads...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating fork threads...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating alloc threads...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating lock threads...done<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">running...printing oldest/median age/newest<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** An array subscript was out of range.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\rw\FileRd.m3", line 83<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** An enumeration or subrange value was out of range.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\runtime\common\RTType.m3", line 71<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** <*ASSERT*> failed.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\thread\WIN32\ThreadWin32.m3", line 823<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** <*ASSERT*> failed.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\thread\WIN32\ThreadWin32.m3", line 823<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">This last assert repeats indefinitely until you press CTRL-C.</span></i></b><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--Randy<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Tony Hosking [mailto:hosking@cs.purdue.edu]
<br>
<b>Sent:</b> Monday, January 13, 2014 3:03 PM<br>
<b>To:</b> Coleburn, Randy<br>
<b>Cc:</b> Peter McKinna; m3devel<br>
<b>Subject:</b> EXT:Re: [M3devel] CM3 crashing<o:p></o:p></span></p>
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</div>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Is this from the head of source?<o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-left:.5in">Also, please run with @M3paranoidgc flag.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:.5in">
<o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal" style="margin-left:.5in">On Jan 13, 2014, at 2:55 PM, Coleburn, Randy <<a href="mailto:rcolebur@SCIRES.COM">rcolebur@SCIRES.COM</a>> wrote:<o:p></o:p></p>
</div>
<p class="MsoNormal" style="margin-left:.5in"><br>
<br>
<o:p></o:p></p>
<div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I’ve also tested on 32-bit Windows XP and the thread test program crashes there also. </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">C:\cm3\Sandbox\cm3\m3-libs>set CM3_TARGET=NT386</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">C:\cm3\Sandbox\cm3\m3-libs>cm3 --version</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Critical Mass Modula-3 version d5.9.0</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> last updated: 2010-07-21</span><o:p></o:p></p>
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<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> compiled: 2013-12-17 17:28:52</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> configuration: C:\cm3\bin\cm3.cfg</span><o:p></o:p></p>
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<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> host: NT386</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> target: NT386</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Here is the output:</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">C:\cm3\Sandbox\cm3\m3-libs\m3core\tests\thread\NT386>threadtest.exe --help</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Writing file...done</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating read threads...done</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating fork threads...done</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating alloc threads...done</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating lock threads...done</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">running...printing oldest/median age/newest</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** Attempt to reference an illegal memory location.</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** pc = 0x42e34a = Move + 0x50 in ..\src\runtime\common\RTCollector.m3</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** <*ASSERT*> failed.</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\thread\WIN32\ThreadWin32.m3", line 823</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** <*ASSERT*> failed.</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\thread\WIN32\ThreadWin32.m3", line 823</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">This last assert repeats indefinitely until you press CTRL-C.</span></i></b><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--Randy</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span class="apple-converted-space"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> </span></span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Coleburn,
Randy<span class="apple-converted-space"> </span><br>
<b>Sent:</b><span class="apple-converted-space"> </span>Monday, January 13, 2014 2:17 PM<br>
<b>To:</b><span class="apple-converted-space"> </span>Tony Hosking; Peter McKinna<br>
<b>Cc:</b><span class="apple-converted-space"> </span>m3devel<br>
<b>Subject:</b><span class="apple-converted-space"> </span>Re: [M3devel] CM3 crashing</span><o:p></o:p></p>
</div>
</div>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Tony et al:</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The thread test program fails for me on 64-bit Windows 7.</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I’ve listed output from a couple of runs below:</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">C:\cm3\Sandbox>cm3 --version</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Critical Mass Modula-3 version d5.9.0</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> last updated: 2010-07-21</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> compiled: 2014-01-07 06:55:14</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> configuration: C:\cm3\bin\cm3.cfg</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> host: NT386</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> target: NT386</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">FIRST RUN:</span><o:p></o:p></p>
</div>
<div style="margin-left:.5in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">C:\cm3\Sandbox\m3-libs\m3core\tests\thread\NT386>threadtest.exe</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Writing file...done</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating read threads...done</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating fork threads...done</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating alloc threads...done</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating lock threads...done</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">running...printing oldest/median age/newest</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** Attempt to reference an illegal memory location.</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** Attempt to reference an illegal memory location.</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** Attempt to reference an illegal memory location.</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** Attempt to reference an illegal memory location.</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** Attempt to reference an illegal memory location.</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** <*ASSERT*> failed.</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\runtime\common\RTCollector.m3", line 418</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** <*ASSERT*> failed.</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\thread\WIN32\ThreadWin32.m3", line 823</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** <*ASSERT*> failed.</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** file "..\src\thread\WIN32\ThreadWin32.m3", line 823</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
</div>
<div style="margin-left:1.0in">
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> …this last assertion repeats until you press CTRL-C to abort the program…</span></i></b><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">SECOND RUN:</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">C:\cm3\Sandbox\m3-libs\m3core\tests\thread\NT386>threadtest.exe /help</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Writing file...done</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating read threads...done</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating fork threads...done</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating alloc threads...done</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Creating lock threads...done</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">running...printing oldest/median age/newest</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">..........laziest thread is 0/0/0 (tests: read 0/0/0 fork 0/0/0 alloc 0/0/0 lock 0/0/0)</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">....</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** runtime error:</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** Attempt to reference an illegal memory location.</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">*** pc = 0x776f22d2</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">***</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Stack trace:</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> FP PC Procedure</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--------- --------- -------------------------------</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">0xa6f9a8 0xc6afeb SystemError + 0x64 in ..\src\runtime\NT386\RTSignal.m3</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">0xa6f9d0 0x776f22d2 <???></span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">0xa6f9e8 0xc4a39b LockMutex + 0x4f in ..\src\thread\WIN32\ThreadWin32.m3</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">0xa6fa10 0xc299f8 GetChar + 0x28 in ..\src\rw\Rd.m3</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">0xa6fb48 0xc213a8 RApply + 0x1b8 in ..\src\Main.m3</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">0xa6fb84 0xc4b71b ThreadBase + 0x255 in ..\src\thread\WIN32\ThreadWin32.m3</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">0xa6fb90 0x76db336a <???></span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">0xa6fbd0 0x7770bf32 <???></span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">......... ......... ... more frames ...</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Maybe this info will be useful in tracking down the problem.</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--Randy</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span class="apple-converted-space"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> </span></span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Tony
Hosking [<a href="mailto:hosking@cs.purdue.edu"><span style="color:purple">mailto:hosking@cs.purdue.edu</span></a>]<span class="apple-converted-space"> </span><br>
<b>Sent:</b><span class="apple-converted-space"> </span>Monday, January 13, 2014 11:04 AM<br>
<b>To:</b><span class="apple-converted-space"> </span>Peter McKinna<br>
<b>Cc:</b><span class="apple-converted-space"> </span>m3devel<br>
<b>Subject:</b><span class="apple-converted-space"> </span>EXT:Re: [M3devel] CM3 crashing</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Let us assume that the user-level threads are functioning properly w.r.to GC (can someone confirm?).<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">In which case, it would be good to have as many eyes as possible take a look at the differences between ThreadPosixC.c (ProcessContext) and ThreadPThreadC.c (ProcessLive) to see if we can spot a problem.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">As I understand it, the crash occurs even for non-concurrent (@M3noincremental) and non-generational (@M3nogenerational) GC. Combined with my assumption that user threads work fine, it would seem to point the finger
at stack scanning. Can someone confirm?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">If the failure is *only* with concurrent or generational collection then we might suspect unsafe code (perhaps newly introduced?) messing with heap references without keeping the collector informed.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">On Jan 12, 2014, at 10:54 PM, Peter McKinna <<a href="mailto:peter.mckinna@gmail.com"><span style="color:purple">peter.mckinna@gmail.com</span></a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:1.5in">
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:1.5in">
Hey,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> I was trying to get a handle on that problem last year. The threadtest program is really a stress tester of the collector/allocator with pthreads. If you run it with just the tests read and alloc you pretty much
always get a crash. If you run them with paranoidgc it will crash in the heap checker. Tony thought it was a clear cut problem of the roots of some ref not being found on a thread stack. I mucked around with code to get some output and the stacks looked ok
to me but I could be wrong. All stacks are checked whilst the threads are blocked in a signal handler, the design of which looks fine as far as I can tell. This test is characterised by some slow threads (the read threads) and a bunch of fast threads (the
alloc threads). Even if you modify the test to have only one read thread the problem occurs. I have had misgivings about mixing signals and threads having been bitten many years ago, but really this is the only way the collector can get its raw refs to check.<span class="apple-converted-space"> </span><br>
My guess is its a subtle timing or lock problem maybe a lurking bug in the collector itself. One thing I noticed is that in ThreadPThread__ProcessStopped the second call to p(context, ((char *)context) + sizeof(ucontext_t)); according to the comment is to
process the registers. But the registers should already be on the stack and anyway this call is a partial duplicate of the previous one.<o:p></o:p></p>
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It would be good to raise the priority on this problem. Trust in the collector has always been at the heart of m3 programs.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Regards Peter<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">On Mon, Jan 13, 2014 at 11:25 AM, <<a href="mailto:mika@async.caltech.edu" target="_blank"><span style="color:purple">mika@async.caltech.edu</span></a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Yes it works in PM3 (still, since I use PM3 on FreeBSD4, never saw a reason to switch to CM3).<br>
<br>
I figured there aren't actually implementations of Word.Xor, Word.Or,<br>
and Word.And as procedures but they get inlined somehow?<br>
<br>
BTW, any idea about what's wrong with pthreads? Do you think the issue<br>
is with the garbage collector or with the threads, off the top of your<br>
head?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><br>
Tony Hosking writes:<br>
>Are you saying passing these used to work in PM3?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">>Sounds like a front-end bug. I=92m curious what changed to break it.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">><br>
>On Jan 12, 2014, at 12:58 PM,<span class="apple-converted-space"> </span><a href="mailto:mika@async.caltech.edu"><span style="color:purple">mika@async.caltech.edu</span></a><span class="apple-converted-space"> </span>wrote:<br>
><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">>>=20<br>
>> The code is:<br>
>>=20<br>
>> HIntExpr.Xor =3D> RETURN NewConst(CBitwise(av, bv, =<br>
>Word.Xor), ab)<br>
>> |<br>
>> HIntExpr.Bor =3D> RETURN NewConst(CBitwise(av, bv, =<br>
>Word.Or), ab)<br>
>> |<br>
>> HIntExpr.Band =3D> RETURN NewConst(CBitwise(av, bv, =<br>
>Word.And), ab)<br>
>>=20<br>
>> I guess it doesn't like passing Word.Xor, Word.Or, and Word.And ...=20<br>
><br>
><br>
><br>
>Antony Hosking | Associate Professor | Computer Science | Purdue =<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">>University<br>
>305 N. University Street | West Lafayette | IN 47907 | USA<br>
>Mobile<span class="apple-converted-space"> </span><a href="tel:%2B1%20765%20427%205484"><span style="color:purple">+1 765 427 5484</span></a><br>
><br>
><br>
><br>
><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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