title: iOS Crash GameObject::IsActive() const
body: <p>I found XCode Organizer Crash Report many crashes.The Top is Following:</p>
  
  <pre><code>Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
  Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000156
  Termination Signal: Segmentation fault: 11
  Termination Reason: Namespace SIGNAL, Code 0xb
  Terminating Process: exc handler [0]
  Triggered by Thread:  0
  
  Thread 0 name:
  Thread 0 Crashed:
  0   ios                             0x000000010107e9bc GameObject::IsActive() const + 16 (GameObject.cpp:425)
  1   ios                             0x00000001013bb168 UI::CanvasManager::AddDirtyRenderer(UI::Canvas*, UI::CanvasRenderer*) + 36 (GameObject.h:575)
  2   ios                             0x00000001013bba08 UI::CanvasRenderer::SetMesh(Mesh*) + 440 (CanvasRenderer.cpp:572)
  3   ios                             0x000000010142b32c CanvasRenderer_CUSTOM_SetMesh(Il2CppObject*, Il2CppObject*) + 68 (CanvasRendererBindings.gen.cpp:296)
  4   ios                             0x0000000100b515cc Graphic_DoMeshGeneration_m2913299565 + 988 (Bulk_UnityEngine.UI_0.cpp:27200)
  5   ios                             0x0000000100b50c98 Graphic_Rebuild_m2617722358 + 92 (GeneratedVirtualInvokers.h:25)
  6   ios                             0x0000000100b458bc CanvasUpdateRegistry_PerformUpdate_m2200492017 + 904 (Bulk_UnityEngine.UI_0.cpp:18024)
  7   ios                             0x0000000100f02854 RuntimeInvoker_Void_t1841601450(MethodInfo const*, void*, void**) + 28 (Il2CppInvokerTable.cpp:3647)
  8   ios                             0x0000000101962460 il2cpp::vm::Runtime::Invoke(MethodInfo const*, void*, void**, Il2CppException**) + 68 (Runtime.cpp:497)
  9   ios                             0x0000000101358bc8 scripting_method_invoke(ScriptingMethodPtr, ScriptingObjectPtr, ScriptingArguments&amp;, ScriptingExc... + 100 (ScriptingApi_Il2Cpp.cpp:213)
  10  ios                             0x00000001013516e0 ScriptingInvocation::Invoke(ScriptingExceptionPtr*, bool) + 60 (ScriptingInvocation.cpp:303)
  11  ios                             0x00000001013bb45c UI::CanvasManager::WillRenderCanvases() + 60 (ScriptingInvocation.h:71)
  12  ios                             0x0000000101253010 PlayerLoop() + 1036 (PlayerLoop.cpp:197)
  13  ios                             0x00000001014cfc54 UnityPlayerLoopImpl(bool) + 32 (LibEntryPoint.mm:221)
  14  ios                             0x000000010008268c UnityRepaint + 140 (UnityAppController+Rendering.mm:268)
  15  ios                             0x0000000100082578 -[UnityAppController(Rendering) repaintDisplayLink] + 88 (UnityAppController+Rendering.mm:77)
  16  QuartzCore                      0x000000018a222f24 CA::Display::DisplayLinkItem::dispatch(unsigned long long) + 44 (CADisplay.mm:1899)
  17  QuartzCore                      0x000000018a222dd0 CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 444 (CADisplay.mm:1334)
  18  IOKit                           0x000000018723a094 IODispatchCalloutFromCFMessage + 372 (IOKitLib.c:1190)
  19  CoreFoundation                  0x0000000186f62e50 __CFMachPortPerform + 180 (CFMachPort.c:682)
  20  CoreFoundation                  0x0000000186f7b218 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 56 (CFRunLoop.c:1959)
  21  CoreFoundation                  0x0000000186f7a9cc __CFRunLoopDoSource1 + 436 (CFRunLoop.c:2078)
  22  CoreFoundation                  0x0000000186f784b0 __CFRunLoopRun + 1840 (CFRunLoop.c:3028)
  23  CoreFoundation                  0x0000000186ea62b8 CFRunLoopRunSpecific + 444 (CFRunLoop.c:3113)
  24  GraphicsServices                0x000000018895a198 GSEventRunModal + 180 (GSEvent.c:2245)
  25  UIKit                           0x000000018ceed7fc -[UIApplication _run] + 684 (UIApplication.m:2650)
  26  UIKit                           0x000000018cee8534 UIApplicationMain + 208 (UIApplication.m:4092)
  27  ios                             0x000000010007c690 main + 160 (main.mm:33)
  28  libdyld.dylib                   0x0000000185e895b8 start + 4
  </code></pre>
  
  <p>I search for a few days but have no idea.</p>
  
  <p>Environment:<br></p>
  
  <ul>
  <li><strong>Unity 5.6.4p1</strong><br></li>
  <li><strong>Xcode 11.3</strong><br></li>
  <li><strong>il2cpp</strong></li>
  </ul>
  
  <p>Devices:</p>
  
  <ul>
  <li><strong>iPhone 6</strong></li>
  <li><strong>iPhone 6s</strong></li>
  <li><strong>iPhone 6p</strong></li>
  <li><strong>iPhone 7</strong></li>
  <li><strong>iPad 5</strong></li>
  <li><strong>iPad 6</strong></li>
  <li><strong>also a little parts on iPhone XS、XS Max</strong></li>
  </ul>
  
  <p>iOS version:</p>
  
  <ul>
  <li><strong>9-13.x</strong></li>
  </ul>
  
  <p>I can't reproduce on local device, so can't confirm wether it's fixed.</p>
  
  <p>Hope someone can help.</p>