<div dir="ltr"><span style="font-size:12.8px">Hi,</span><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">With the latest 64bit Pharo vm running with Pharo64-60451.image on mac I sometimes get a vm crash during long computations that take more than 1gb of memory. I do not have a reproducible use case but it seems to happen more often if I increase the eden size. </div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Not sure if it's related to the compactor bug but here is the report I get when the crash happens, in case it provides any hints.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><div>Thread 0 Crashed:: Dispatch queue: com.apple.main-thread</div><div>0   libsystem_kernel.dylib        <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">    </span>0x00007fff90785286 __pthread_kill + 10</div><div>1   libsystem_c.dylib             <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">       </span>0x00007fff858329ab abort + 129</div><div>2   org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">      </span>0x000000010c50b39d error + 126</div><div>3   org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">      </span>0x000000010c49256e remember + 297</div><div>4   org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">   </span>0x000000010c4ba239 copyToOldSpacebytesformat + 262</div><div>5   org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">  </span>0x000000010c4b1826 copyAndForward + 208</div><div>6   org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">     </span>0x000000010c4bfee2 scavengeReferentsOf + 370</div><div>7   org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">        </span>0x000000010c4a9991 doScavenge + 324</div><div>8   org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap"> </span>0x000000010c4b144f scavengingGCTenuringIf + 330</div><div>9   org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">     </span>0x000000010c495246 checkForEventsMayContextSwitch + 127</div><div>10  org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">     </span>0x000000010c49964a ceStackOverflow + 110</div><div>11  ???                           <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">      </span>0x00000001192f841b 0 + 4717511707</div><div>12  org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">   </span>0x000000010c481dec interpret + 674</div><div>13  org.pharo.Pharo               <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">  </span>0x000000010c50ccd9 -[sqSqueakMainApplication runSqueak] + 394</div><div>14  com.apple.Foundation          <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">  </span>0x00007fff8b07f641 __NSFirePerformWithOrder + 326</div><div>15  com.apple.CoreFoundation      <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">        </span>0x00007fff83c61127 __CFRUNLOOP_IS_CALLING_OUT_TO_<wbr>AN_OBSERVER_CALLBACK_FUNCTION_<wbr>_ + 23</div><div>16  com.apple.CoreFoundation      <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">      </span>0x00007fff83c61080 __CFRunLoopDoObservers + 368</div><div>17  com.apple.CoreFoundation      <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">  </span>0x00007fff83c53188 __CFRunLoopRun + 872</div><div>18  com.apple.CoreFoundation      <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">  </span>0x00007fff83c52bd8 CFRunLoopRunSpecific + 296</div><div>19  com.apple.HIToolbox           <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap"> </span>0x00007fff853cc56f RunCurrentEventLoopInMode + 235</div><div>20  com.apple.HIToolbox           <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">    </span>0x00007fff853cc1ee ReceiveNextEventCommon + 179</div><div>21  com.apple.HIToolbox           <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">       </span>0x00007fff853cc12b _<wbr>BlockUntilNextEventMatchingLis<wbr>tInModeWithFilter + 71</div><div>22  com.apple.AppKit              <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">       </span>0x00007fff8993b8ab _DPSNextEvent + 978</div><div>23  com.apple.AppKit              <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">       </span>0x00007fff8993ae58 -[NSApplication nextEventMatchingMask:<wbr>untilDate:inMode:dequeue:] + 346</div><div>24  com.apple.AppKit              <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap"> </span>0x00007fff89930af3 -[NSApplication run] + 594</div><div>25  com.apple.AppKit              <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">        </span>0x00007fff898ad244 NSApplicationMain + 1832</div><div>26  libdyld.dylib                 <span class="gmail-m_-541076713615263790gmail-Apple-tab-span" style="white-space:pre-wrap">        </span>0x00007fff8ae095c9 start + 1</div></div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><div>CoInterpreter * VMMaker.oscog-cb.2179 uuid: 8a024d75-b1a4-4406-b88a-<wbr>72c7a48692ad Mar 24 2017</div><div>StackToRegisterMappingCogit * VMMaker.oscog-cb.2179 uuid: 8a024d75-b1a4-4406-b88a-<wbr>72c7a48692ad Mar 24 2017</div><div>VM: 201703241022 <a href="https://github.com/pharo-project/pharo-vm.git" target="_blank">https://github.com/pharo-<wbr>project/pharo-vm.git</a> $ Date: Fri Mar 24 11:22:02 2017 +0100 $ Plugins: 201703241022 <a href="https://github.com/pharo-project/pharo-vm.git" target="_blank">https://github.com/pharo-<wbr>project/pharo-vm.git</a> $</div><div><br></div><div>Mac OS X built on Mar 24 2017 10:42:17 UTC Compiler: 4.2.1 Compatible Apple LLVM 6.1.0 (clang-602.0.53)</div><div>VMMaker versionString VM: 201703241022 <a href="https://github.com/pharo-project/pharo-vm.git" target="_blank">https://github.com/pharo-<wbr>project/pharo-vm.git</a> $ Date: Fri Mar 24 11:22:02 2017 +0100 $ Plugins: 201703241022 <a href="https://github.com/pharo-project/pharo-vm.git" target="_blank">https://github.com/pharo-<wbr>project/pharo-vm.git</a> $</div><div>CoInterpreter * VMMaker.oscog-cb.2179 uuid: 8a024d75-b1a4-4406-b88a-<wbr>72c7a48692ad Mar 24 2017</div><div>StackToRegisterMappingCogit * VMMaker.oscog-cb.2179 uuid: 8a024d75-b1a4-4406-b88a-<wbr>72c7a48692ad Mar 24 2017</div></div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Cheers,</div><div style="font-size:12.8px">Andrei</div></div>