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We have collected many crashes of this type in our APP on 16.1 or later systems, but it is normal on other systems. It looks like memory issues related to objc_release, but our code should be correct. Could someone help to locate the cause? Hardware Model: iPhone14,3 Process: MyAPP [6850] Path: /private/var/containers/Bundle/Application/C129C91C-89D6-4C6F-9057-D884CFACDB41/MyAPP.app/MyAPP Version: 6.0.2 (6021) AppStoreTools: 14C17 AppVariant: 1:iPhone14,3:15 Code Type: ARM-64 (Native) Role: Foreground Parent Process: launchd [1] Date/Time: 2023-02-08 13:32:40.1633 +0800 Launch Time: 2023-02-07 01:19:36.8931 +0800 OS Version: iPhone OS 16.3 (20D47) Release Type: User Baseband Version: 2.40.01 Report Version: 104 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x00000000002008ff Exception Codes: 0x0000000000000001, 0x00000000002008ff VM Region Info: 0x2008ff is not in any region. Bytes before following region: 4361615105 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START ---> __TEXT 104190000-104f64000 [ 13.8M] r-x/r-x SM=COW .../MyAPP Termination Reason: SIGNAL 11 Segmentation fault: 11 Terminating Process: exc handler [6850] Triggered by Thread: 0 Thread 0 name: Thread 0 Crashed: 0 libobjc.A.dylib 0x0000000187a9754c objc_release_x0 + 8 (:-1) 1 MyAPP 0x00000001058474ec +[GSTree buildMenuTreeWithMenus:] + 792 2 MyAPP 0x00000001057d0230 -[SystemInfoCenter buildMenuTressWithMenus:] + 48 3 MyAPP 0x00000001057c8ad4 -[SystemInfoCenter parseMenu:] + 72 4 MyAPP 0x00000001057c8820 -[SystemInfoCenter parseSystemConfiguration:updatePersistance:] + 100 5 MyAPP 0x00000001057c741c -[SystemInfoCenter loadSystemInfoFromPersistance] + 92 6 MyAPP 0x00000001057c73a4 -[SystemInfoCenter systemInitializeWithAppName:productionVersion:] + 120 7 MyAPP 0x00000001051fb3b0 -[AppDelegate logoutSystem:restoreContentVC:] + 1508 (AppDelegate.m:635) 8 MyAPP 0x00000001051f8b40 -[AppDelegate applicationWillEnterForeground:] + 252 (AppDelegate.m:261) 9 MyAPP 0x00000001070bb33c -[NBSAppAgent nbs_applicationWillEnterForeground:] + 952 10 UIKitCore 0x0000000190c8c63c -[UIApplication _sendWillEnterForegroundCallbacks] + 184 (UIApplication.m:11710) 11 UIKitCore 0x0000000190c8c1a0 __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke_2 + 1272 (_UISceneLifecycleMultiplexer.m:651) 12 UIKitCore 0x0000000190b85e74 _UIScenePerformActionsWithLifecycleActionMask + 108 (_UISceneLifecycleState.m:109) 13 UIKitCore 0x0000000190ec7d78 __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke + 216 (_UISceneLifecycleMultiplexer.m:564) 14 UIKitCore 0x0000000190d78adc -[_UISceneLifecycleMultiplexer _performBlock:withApplicationOfDeactivationReasons:fromReasons:] + 220 (_UISceneLifecycleMultiplexer.m:513) 15 UIKitCore 0x0000000190d78904 -[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:] + 620 (_UISceneLifecycleMultiplexer.m:563) 16 UIKitCore 0x0000000190d784b4 -[_UISceneLifecycleMultiplexer uiScene:transitionedFromState:withTransitionContext:] + 252 (_UISceneLifecycleMultiplexer.m:469) 17 UIKitCore 0x0000000190d78380 __186-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]_block... + 148 (_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction.m:73) 18 UIKitCore 0x000000019145c56c +[BSAnimationSettings(UIKit) tryAnimatingWithSettings:fromCurrentState:actions:completion:] + 736 (BSAnimationSettings+UIKit.m:54) 19 UIKitCore 0x00000001914f6568 _UISceneSettingsDiffActionPerformChangesWithTransitionContextAndCompletion + 224 (_UISceneSettingsDiffAction.m:27) 20 UIKitCore 0x0000000190c24374 -[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:] + 316 (_UISceneSettingsDiffAction.m:20) 21 UIKitCore 0x0000000191097294 __64-[UIScene scene:didUpdateWithDiff:transitionContext:completion:]_block_invoke.214 + 556 (UIScene.m:2000) 22 UIKitCore 0x0000000190cf69a0 -[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:] + 216 (UIScene.m:1676) 23 UIKitCore 0x0000000190cf6810 -[UIScene scene:didUpdateWithDiff:transitionContext:completion:] + 244 (UIScene.m:1962) 24 UIKitCore 0x0000000190cf6650 -[UIApplicationSceneClientAgent scene:handleEvent:withCompletion:] + 336 (UIApplicationSceneClientAgent.m:86) 25 FrontBoardServices 0x00000001a469566c -[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:] + 420 (FBSScene.m:549) 26 FrontBoardServices 0x00000001a46954a8 __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2 + 144 (FBSWorkspaceScenesClient.m:579) 27 FrontBoardServices 0x00000001a4698c24 -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:] + 168 (FBSWorkspace.m:359) 28 FrontBoardServices 0x00000001a4698b40 __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke + 340 (FBSWorkspaceScenesClient.m:578) 29 libdispatch.dylib 0x0000000195f34f88 _dispatch_client_callout + 20 (object.m:560) 30 libdispatch.dylib 0x0000000195f38a08 _dispatch_block_invoke_direct + 264 (queue.c:496) 31 FrontBoardServices 0x00000001a46a2d40 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 52 (FBSSerialQueue.m:157) 32 FrontBoardServices 0x00000001a46a28dc -[FBSSerialQueue _targetQueue_performNextIfPossible] + 220 (FBSSerialQueue.m:181) 33 FrontBoardServices 0x00000001a46a5184 -[FBSSerialQueue _performNextFromRunLoopSource] + 28 (FBSSerialQueue.m:194) 34 CoreFoundation 0x000000018e9e8f24 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 (CFRunLoop.c:1957) 35 CoreFoundation 0x000000018e9f52fc __CFRunLoopDoSource0 + 176 (CFRunLoop.c:2001)

When trying to build my project in in Xcode11.0 or Xcode 11.1, I am getting the following failures. But the same project can be build in Xcode 10.3.I had changed the Swift compiler optimizations to None -Onone, but it doesn't help. Don't know what to do now.--- 2. While running pass #0 SILModuleTransform "SerializeSILPass". 3. While serializing declaration 0x11634e018 (in module 'XiaoYan') 4. failed to serialize anything 0 swift 0x000000010dbbfeb3 PrintStackTraceSignalHandler(void*) + 51 1 swift 0x000000010dbbf686 SignalHandler(int) + 358 2 libsystem_platform.dylib 0x00007fff71f0ab5d _sigtramp + 29 3 libsystem_platform.dylib 0x00007ffee64808a0 _sigtramp + 1951882592 4 libsystem_c.dylib 0x00007fff71dc46a6 abort + 127 5 swift 0x000000010a4a34ca swift::serialization::Serializer::writeDecl(swift::Decl const*) + 68458 6 swift 0x000000010a4b9b3f swift::serialization::Serializer::writeAllDeclsAndTypes() + 62287 7 swift 0x000000010a4c6b04 swift::serialization::Serializer::writeAST(llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, bool) + 5364 8 swift 0x000000010a4d3a30 swift::serialization::Serializer::writeToStream(llvm::raw_ostream&, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::SILModule const*, swift::SerializationOptions const&) + 6000 9 swift 0x000000010a4d530b bool llvm::function_ref<bool (llvm::raw_pwrite_stream&)>::callback_fn<swift::serialize(llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::SerializationOptions const&, swift::SILModule const*)::$_8>(long, llvm::raw_pwrite_stream&) + 139 10 swift 0x00000001097e5079 swift::withOutputFile(swift::DiagnosticEngine&, llvm::StringRef, llvm::function_ref<bool (llvm::raw_pwrite_stream&)>) + 2569 11 swift 0x000000010a4d5167 swift::serialize(llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::SerializationOptions const&, swift::SILModule const*) + 311 12 swift 0x0000000109820aab std::__1::__function::__func<performCompileStepsPostSILGen(swift::CompilerInstance&, swift::CompilerInvocation&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> >, bool, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::PrimarySpecificPaths const&, in , swift::FrontendObserver*, swift::UnifiedStatsReporter*)::$_12, std::__1::allocator<performCompileStepsPosmpilerInstance&, swift::CompilerInvocation&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> >, bool, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::PrimarySpecificPaths const&, bool, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*)::$_12>, void ()>::operator()() + 603 13 swift 0x0000000109fc8391 SerializeSILPass::run() + 49 14 swift 0x0000000109ebea29 swift::SILPassManager::execute() + 7305 15 swift 0x0000000109b1b5bb swift::CompilerInstance::performSILProcessing(swift::SILModule*, swift::UnifiedStatsReporter*) + 1563 16 swift 0x0000000109816cc5 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 33925 17 swift 0x000000010980b034 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 68 18 swift 0x00000001097985a3 main + 1219 19 libdyld.dylib 0x00007fff71d1f3d5 start + 1 20 libdyld.dylib 0x0000000000000097 start + 2385382595 error: Abort trap: 6 (in target 'XiaoYan' from project 'XiaoYan')