Some users report random crashing when just navigating the app. The app is really simple, here is the structure (it's MVP so most of the screens are not done yet):
@State private var isChatModalPresented = false
@State private var selectedTab = 0
@State private var previousTab = 0
var body: some View {
TabView(selection: $selectedTab) {
Text("Dashboard")
.tabItem {
Label("Dashboard", systemImage: "house")
}
.tag(0)
Text("Training")
.tabItem {
Label("Training", systemImage: "flame")
}
.tag(1)
Text("")
.tabItem {
Label("Chat", systemImage: "bubble.left")
}
.tag(2)
Text("Recovery")
.tabItem {
Label("Recovery", systemImage: "heart")
}
.tag(3)
Text("Community")
.tabItem {
Label("Community", systemImage: "person.3")
}
.tag(4)
}
.onChange(of: selectedTab) { neco in
if selectedTab == 2 {
self.isChatModalPresented = true
selectedTab = previousTab
} else {
previousTab = selectedTab
}
}
.fullScreenCover(isPresented: $isChatModalPresented) {
ChatView(isPresented: $isChatModalPresented)
}
}
}
It's supposed to be a standard tabview, except that when you tap on the middle item, it's supposed to present a view from the bottom using fullScreenCover. Is this code correct?
I am supplying the crash log:
Exception Subtype: KERN_PROTECTION_FAILURE at 0x0f00002a00000000 -> 0x0000002a00000000 (possible pointer authentication failure)
Exception Codes: 0x0000000000000002, 0x0f00002a00000000
VM Region Info: 0x2a00000000 is in 0x1000000000-0x7000000000; bytes after start: 111669149696 bytes before end: 300647710719
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
commpage (reserved) fc0000000-1000000000 [ 1.0G] ---/--- SM=NUL ...(unallocated)
---> GPU Carveout (reserved) 1000000000-7000000000 [384.0G] ---/--- SM=NUL ...(unallocated)
UNUSED SPACE AT END
Termination Reason: SIGNAL 10 Bus error: 10
Terminating Process: exc handler [25839]
Triggered by Thread: 0
Thread 0 name:
Thread 0 Crashed:
0 libobjc.A.dylib 0x0000000184eb98a4 lookUpImpOrForward + 72 (objc-runtime-new.mm:7331)
1 libobjc.A.dylib 0x0000000184eb4cc4 _objc_msgSend_uncached + 68
2 UIKitCore 0x000000018f01f46c -[UIViewController dealloc] + 860 (UIViewController.m:3270)
3 UIKitCore 0x000000018f0e8a88 -[UINavigationController dealloc] + 296 (UINavigationController.m:871)
4 UIKitCore 0x000000018f4ce920 -[_UISplitViewControllerColumnContents .cxx_destruct] + 44 (UISplitViewControllerPanelImpl.m:438)
5 libobjc.A.dylib 0x0000000184eb5374 object_cxxDestructFromClass(objc_object*, objc_class*) + 116 (objc-class.mm:457)
6 libobjc.A.dylib 0x0000000184eb509c objc_destructInstance + 80 (objc-runtime-new.mm:9057)
7 libobjc.A.dylib 0x0000000184eb503c _objc_rootDealloc + 80 (NSObject.mm:2153)
8 CoreFoundation 0x000000018cb51f48 cow_cleanup + 164 (NSDictionaryM.m:141)
9 CoreFoundation 0x000000018cb51e54 -[__NSDictionaryM dealloc] + 148 (NSDictionaryM.m:407)
...
36 UIKitCore 0x000000018ef9eedc UIApplicationMain + 340 (UIApplication.m:5270)
37 SwiftUI 0x00000001919b0898 closure #1 in KitRendererCommon(_:) + 176 (UIKitApp.swift:51)
38 SwiftUI 0x00000001919b06dc runApp<A>(_:) + 152 (UIKitApp.swift:14)
39 SwiftUI 0x000000019162125c static App.main() + 128 (App.swift:114)
40 REDACTED 0x00000001044243f4 static REDACTED.$main() + 52 (REDACTER.swift:0)
41 REDACTED 0x00000001044243f4 main + 64
42 dyld 0x00000001af8e2dcc start + 2240 (dyldMain.cpp:1269)
It seems that something is happening under the hood regarding deallocation inside underlying UIKit views so I suspect this main navigation is the culprit?
