[iOS] libc++abi: terminating with uncaught exception of type std::runtime_error: Feature flags were accessed before being overridden: fuseboxEnabledRelease

[benjamin-beau]

Description

After upgrading RN from 74.1 to 76.0 I get the following error when launching the app in debug from Xcode :

libc++abi: terminating with uncaught exception of type std::runtime_error: Feature flags were accessed before being overridden: fuseboxEnabledRelease

The app works fine on Android. I tried to launch a template app (npx @react-native-community/cli@latest init Test) and it starts just fine. So I think it is a config issue on my side. My problem is that I don't know where to start in order to debug on this type of deep issue (c++ error). Since it is a config issue it is really complicated for me to setup a reproducer, I striped down my project to keep the bare minimum and provided the link to this.

My question is : if this error is not known, how to debug this type of error ?

Steps to reproduce

1. Upgrade app from from 74.1 to 76.0.
2. Compile and start from XCode.
3. App crashes at startup.

React Native Version

0.76.0

Affected Platforms

Runtime - iOS

Output of npx react-native info

System:
  OS: macOS 15.0.1
  CPU: (8) arm64 Apple M1 Pro
  Memory: 268.17 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 21.1.0
    path: ~/.nvm/versions/node/v21.1.0/bin/node
  Yarn:
    version: 1.22.19
    path: /opt/homebrew/bin/yarn
  npm:
    version: 10.2.0
    path: ~/.nvm/versions/node/v21.1.0/bin/npm
  Watchman:
    version: 2024.09.23.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.15.2
    path: /Users/benjaminbeau/.rbenv/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.0
      - iOS 18.0
      - macOS 15.0
      - tvOS 18.0
      - visionOS 2.0
      - watchOS 11.0
  Android SDK: Not Found
IDEs:
  Android Studio: 2024.2 AI-242.23339.11.2421.12483815
  Xcode:
    version: 16.0/16A242d
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 11.0.20.1
    path: /usr/bin/javac
  Ruby:
    version: 3.2.2
    path: /Users/benjaminbeau/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 14.1.1
    wanted: ^14.1.1
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.76.0
    wanted: 0.76.0
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: false
iOS:
  hermesEnabled: false
  newArchEnabled: true

Stacktrace or Logs

2024-10-24 11:50:24.310785+0200 surloMobile[53882:2265559] [Mapbox] [Info, common]: Using Mapbox Common SDK v24.5.0(edbe9cbfd)
2024-10-24 11:50:24.315740+0200 surloMobile[53882:2265559] [Mapbox] [Info, maps-core]: Using Mapbox Core Maps SDK v11.5.0(e548448702)
2024-10-24 11:50:24.366175+0200 surloMobile[53882:2265559] [TSBackgroundFetch load]: (
)
2024-10-24 11:50:24.366718+0200 surloMobile[53882:2265559] [TSBGAppRefreshSubscriber load]: {
}
2024-10-24 11:50:24.405722+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking up debug dylib relative path
2024-10-24 11:50:24.410527+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Found debug dylib relative path string `surloMobile.debug.dylib`
2024-10-24 11:50:24.410544+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking up debug dylib entry point name
2024-10-24 11:50:24.410552+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] No debug dylib entry point name defined.
2024-10-24 11:50:24.410557+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking up debug dylib install name
2024-10-24 11:50:24.410565+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Found debug dylib install name string `@rpath/surloMobile.debug.dylib`
2024-10-24 11:50:24.410573+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking for Previews JIT link entry point.
2024-10-24 11:50:24.474952+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] No Previews JIT entry point found.
2024-10-24 11:50:24.474990+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Gave PreviewsInjection a chance to run and it returned, continuing with debug dylib.
2024-10-24 11:50:24.474998+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking for main entry point.
2024-10-24 11:50:24.475008+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Opening debug dylib with '@rpath/surloMobile.debug.dylib'
2024-10-24 11:50:24.475049+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Debug dylib handle: 0x200d5d4c0
2024-10-24 11:50:24.475060+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] No entry point found. Checking for alias.
2024-10-24 11:50:24.475072+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Calling provided entry point.
2024-10-24 11:50:24.685208+0200 surloMobile[53882:2265841] [[FirebaseMessaging]] 11.4.0 - [FirebaseMessaging][I-FCM001000] FIRMessaging Remote Notifications proxy enabled, will swizzle remote notification receiver handlers. If you'd prefer to manually integrate Firebase Messaging, add "FirebaseAppDelegateProxyEnabled" to your Info.plist, and set it to NO. Follow the instructions at:
https://firebase.google.com/docs/cloud-messaging/ios/client#method_swizzling_in_firebase_messaging
to ensure proper integration.
2024-10-24 11:50:24.829490+0200 surloMobile[53882:2265843] [connection] nw_socket_handle_socket_event [C1.1:2] Socket SO_ERROR [61: Connection refused]
2024-10-24 11:50:24.831571+0200 surloMobile[53882:2265843] [connection] nw_socket_handle_socket_event [C1.2:2] Socket SO_ERROR [61: Connection refused]
2024-10-24 11:50:24.832102+0200 surloMobile[53882:2265843] Connection 1: received failure notification
2024-10-24 11:50:24.832246+0200 surloMobile[53882:2265843] Connection 1: failed to connect 1:61, reason -1
2024-10-24 11:50:24.832280+0200 surloMobile[53882:2265843] Connection 1: encountered error(1:61)
2024-10-24 11:50:24.833721+0200 surloMobile[53882:2265843] Task <8A0B759E-48AB-4B06-A42D-5B1D65AC6FB1>.<1> HTTP load failed, 0/0 bytes (error code: -1004 [1:61])
2024-10-24 11:50:24.841309+0200 surloMobile[53882:2265842] Task <8A0B759E-48AB-4B06-A42D-5B1D65AC6FB1>.<1> finished with error [-1004] Error Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server." UserInfo={_kCFStreamErrorCodeKey=61, NSUnderlyingError=0x2814747b0 {Error Domain=kCFErrorDomainCFNetwork Code=-1004 "(null)" UserInfo={_NSURLErrorNWPathKey=satisfied (Path is satisfied), interface: lo0, _kCFStreamErrorCodeKey=61, _kCFStreamErrorDomainKey=1}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <8A0B759E-48AB-4B06-A42D-5B1D65AC6FB1>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
    "LocalDataTask <8A0B759E-48AB-4B06-A42D-5B1D65AC6FB1>.<1>"
), NSLocalizedDescription=Could not connect to the server., NSErrorFailingURLStringKey=http://localhost:8081/status, NSErrorFailingURLKey=http://localhost:8081/status, _kCFStreamErrorDomainKey=1}
2024-10-24 11:50:24.858759+0200 surloMobile[53882:2265559] [HealthKit] Background observers added to the app
libc++abi: terminating with uncaught exception of type std::runtime_error: Feature flags were accessed before being overridden: fuseboxEnabledRelease

Reproducer

https://github.com/benjamin-beau/RN_crash

Screenshots and Videos

No response

[cipolleschi]

Hi @benjamin-beau, thanks for the issue.
I was trying to download the repro but I'm getting a 401 when trying to install MapboxCommon... 🤷

Anyway, I had a look at the code and there are a couple of things that stand out:

• In the AppDelegate.mm file, you are initializing a bunch of stuff before calling [super application:application didFinishLaunchingWithOptions:launchOptions]. Calling [super should be one of the first things you do, as it bootstrap React Native.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
+  self.moduleName = @"surloMobile";
+  // You can add your custom initial props in the dictionary below.
+  // They will be passed down to the ViewController used by React Native.
+  self.initialProps = @{};

+  BOOL appLaunched = [super application:application didFinishLaunchingWithOptions:launchOptions];
+  if (!appLaunched) {
+    return NO;
+  }

  [FIRApp configure];

  // [REQUIRED] Register BackgroundFetch
  [[TSBackgroundFetch sharedInstance] didFinishLaunching];
  
  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self
                                            launchOptions:launchOptions];
  /* Add Background initializer for HealthKit  */
  [[RCTAppleHealthKit new] initializeBackgroundObservers:bridge];

-  self.moduleName = @"surloMobile";
-  // You can add your custom initial props in the dictionary below.
-  // They will be passed down to the ViewController used by React Native.
-  self.initialProps = @{};

-  return [super application:application didFinishLaunchingWithOptions:launchOptions];
  return appLaunched;
}

• The second problem is that you are initializing the Bridge for the RCTAppleHealthKit library. With 0.76, the new architecture is enabled by default and the Bridge is basically unused. Especially, you are creating a new instance not connected with the React Native runtime. I believe that that line needs to be adjusted. The right way to do is to request the bridge property from the super class, as we are initializing it with a proxy bridge from the interop layer, so it might work.

// This is a workaround because the library should not request the bridge when it is initialized.
+ #import <React/RCTBridge+Private.h>
// ...
-  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self
-                                            launchOptions:launchOptions];
-  /* Add Background initializer for HealthKit  */
- [[RCTAppleHealthKit new] initializeBackgroundObservers:bridge];
+ [[RCTAppleHealthKit new] initializeBackgroundObservers:[RCTBridge currentBridge]];

Can you share the github repo of that library? That probably need to properly migrate to the New Architecture if it does not work in this way.

Hope that this helps unblock you.

[hellogbg]

I have same problem. I have upgraded from 0.74.0 to 0.76.0 and i have double checked everything from Upgrade helper, i have reinstalled pods, cleaned project with react-native-clean-project.
When i tried to install clean project it worked. Same thing happens using terminal command and Xcode. Using terminal app just crushes on start.
When running through Xcode this is appearing on simulator:
No script URL provided. Make sure the packager is running or you have embedded a JS bundle in your application bundle.

unsanitizedScriptURLString = (null)

I am using Xcode 16.1 and corresponding Command Line Tools 16.1. Tried to upgrade Cocoapods to 1.16.0 but no luck since i use M3 silicon from Apple.

This is the whole output in Xcode:

`
warning: (arm64) /Users/duperx/Library/Developer/Xcode/DerivedData/Baba-bmujiqaggjqaasheqevjjclcoxbp/Build/Products/Debug-iphonesimulator/Baba.app/Baba empty dSYM file detected, dSYM was created with an executable with no debug info.
nw_socket_handle_socket_event [C1.1.1:2] Socket SO_ERROR [61: Connection refused]
nw_endpoint_flow_failed_with_error [C1.1.1 ::1.8081 in_progress socket-flow (satisfied (Path is satisfied), interface: lo0)] already failing, returning
nw_socket_handle_socket_event [C1.1.2:2] Socket SO_ERROR [61: Connection refused]
nw_endpoint_flow_failed_with_error [C1.1.2 127.0.0.1:8081 in_progress socket-flow (satisfied (Path is satisfied), interface: lo0)] already failing, returning
nw_endpoint_flow_failed_with_error [C1.1.2 127.0.0.1:8081 cancelled socket-flow ((null))] already failing, returning
Connection 1: received failure notification
Connection 1: failed to connect 1:61, reason -1
Connection 1: encountered error(1:61)
Task .<1> HTTP load failed, 0/0 bytes (error code: -1004 [1:61])
Task .<1> finished with error [-1004] Error Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server." UserInfo={_kCFStreamErrorCodeKey=61, NSUnderlyingError=0x600000c72ca0 {Error Domain=kCFErrorDomainCFNetwork Code=-1004 "(null)" UserInfo={_NSURLErrorNWPathKey=satisfied (Path is satisfied), interface: utun8[802.11], uses wifi, _kCFStreamErrorCodeKey=61, _kCFStreamErrorDomainKey=1}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask .<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask .<1>"
), NSLocalizedDescription=Could not connect to the server., NSErrorFailingURLStringKey=http://localhost:8081/status, NSErrorFailingURLKey=http://localhost:8081/status, _kCFStreamErrorDomainKey=1}
WARNING: Logging before InitGoogleLogging() is written to STDERR
W1029 12:06:36.080183 43647488 Scheduler.cpp:158] Scheduler::~Scheduler() was called (address: 0x60000370cf00).
No script URL provided. Make sure the packager is running or you have embedded a JS bundle in your application bundle.

unsanitizedScriptURLString = (null)
W1029 12:06:36.149204 1844424704 UIManagerBinding.cpp:61] UIManagerBinding::~UIManagerBinding() was called (address: 0x600003b08c58).
W1029 12:06:36.149271 1844424704 UIManager.cpp:64] UIManager::~UIManager() was called (address: 0x103812d38).
`

[cipolleschi]

@benjamin-beau did you solve your issue?

[FaggioniHQ]

Hello There,

Any workaround for this?

Thanks in advance

[cipolleschi]

@FaggioniHQ what's your use case? Can you see if these suggestions help you?

What's happening is a misconfiguration on the App side, not on React Native: the app is trying to access the React Native runtime before it is actually initialized. I suggest you to look into your AppDelegate and into the - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions method

[FaggioniHQ]

Hey @cipolleschi

Thanks for your reply... i solved the issue some days ago by changing some old code on the AppDelegate. Indeed was related to the didFinishLaunchingWithOptions method

[kapilw360]

Description

After upgrading RN from 74.1 to 76.0 I get the following error when launching the app in debug from Xcode :

libc++abi: terminating with uncaught exception of type std::runtime_error: Feature flags were accessed before being overridden: fuseboxEnabledRelease

The app works fine on Android. I tried to launch a template app (npx @react-native-community/cli@latest init Test) and it starts just fine. So I think it is a config issue on my side. My problem is that I don't know where to start in order to debug on this type of deep issue (c++ error). Since it is a config issue it is really complicated for me to setup a reproducer, I striped down my project to keep the bare minimum and provided the link to this.

My question is : if this error is not known, how to debug this type of error ?

Steps to reproduce

1. Upgrade app from from 74.1 to 76.0.
2. Compile and start from XCode.
3. App crashes at startup.

React Native Version

0.76.0

Affected Platforms

Runtime - iOS

Output of npx react-native info

System:
  OS: macOS 15.0.1
  CPU: (8) arm64 Apple M1 Pro
  Memory: 268.17 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 21.1.0
    path: ~/.nvm/versions/node/v21.1.0/bin/node
  Yarn:
    version: 1.22.19
    path: /opt/homebrew/bin/yarn
  npm:
    version: 10.2.0
    path: ~/.nvm/versions/node/v21.1.0/bin/npm
  Watchman:
    version: 2024.09.23.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.15.2
    path: /Users/benjaminbeau/.rbenv/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.0
      - iOS 18.0
      - macOS 15.0
      - tvOS 18.0
      - visionOS 2.0
      - watchOS 11.0
  Android SDK: Not Found
IDEs:
  Android Studio: 2024.2 AI-242.23339.11.2421.12483815
  Xcode:
    version: 16.0/16A242d
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 11.0.20.1
    path: /usr/bin/javac
  Ruby:
    version: 3.2.2
    path: /Users/benjaminbeau/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 14.1.1
    wanted: ^14.1.1
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.76.0
    wanted: 0.76.0
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: false
iOS:
  hermesEnabled: false
  newArchEnabled: true

Stacktrace or Logs

2024-10-24 11:50:24.310785+0200 surloMobile[53882:2265559] [Mapbox] [Info, common]: Using Mapbox Common SDK v24.5.0(edbe9cbfd)
2024-10-24 11:50:24.315740+0200 surloMobile[53882:2265559] [Mapbox] [Info, maps-core]: Using Mapbox Core Maps SDK v11.5.0(e548448702)
2024-10-24 11:50:24.366175+0200 surloMobile[53882:2265559] [TSBackgroundFetch load]: (
)
2024-10-24 11:50:24.366718+0200 surloMobile[53882:2265559] [TSBGAppRefreshSubscriber load]: {
}
2024-10-24 11:50:24.405722+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking up debug dylib relative path
2024-10-24 11:50:24.410527+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Found debug dylib relative path string `surloMobile.debug.dylib`
2024-10-24 11:50:24.410544+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking up debug dylib entry point name
2024-10-24 11:50:24.410552+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] No debug dylib entry point name defined.
2024-10-24 11:50:24.410557+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking up debug dylib install name
2024-10-24 11:50:24.410565+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Found debug dylib install name string `@rpath/surloMobile.debug.dylib`
2024-10-24 11:50:24.410573+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking for Previews JIT link entry point.
2024-10-24 11:50:24.474952+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] No Previews JIT entry point found.
2024-10-24 11:50:24.474990+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Gave PreviewsInjection a chance to run and it returned, continuing with debug dylib.
2024-10-24 11:50:24.474998+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Looking for main entry point.
2024-10-24 11:50:24.475008+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Opening debug dylib with '@rpath/surloMobile.debug.dylib'
2024-10-24 11:50:24.475049+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Debug dylib handle: 0x200d5d4c0
2024-10-24 11:50:24.475060+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] No entry point found. Checking for alias.
2024-10-24 11:50:24.475072+0200 surloMobile[53882:2265559] [PreviewsAgentExecutorLibrary] Calling provided entry point.
2024-10-24 11:50:24.685208+0200 surloMobile[53882:2265841] [[FirebaseMessaging]] 11.4.0 - [FirebaseMessaging][I-FCM001000] FIRMessaging Remote Notifications proxy enabled, will swizzle remote notification receiver handlers. If you'd prefer to manually integrate Firebase Messaging, add "FirebaseAppDelegateProxyEnabled" to your Info.plist, and set it to NO. Follow the instructions at:
https://firebase.google.com/docs/cloud-messaging/ios/client#method_swizzling_in_firebase_messaging
to ensure proper integration.
2024-10-24 11:50:24.829490+0200 surloMobile[53882:2265843] [connection] nw_socket_handle_socket_event [C1.1:2] Socket SO_ERROR [61: Connection refused]
2024-10-24 11:50:24.831571+0200 surloMobile[53882:2265843] [connection] nw_socket_handle_socket_event [C1.2:2] Socket SO_ERROR [61: Connection refused]
2024-10-24 11:50:24.832102+0200 surloMobile[53882:2265843] Connection 1: received failure notification
2024-10-24 11:50:24.832246+0200 surloMobile[53882:2265843] Connection 1: failed to connect 1:61, reason -1
2024-10-24 11:50:24.832280+0200 surloMobile[53882:2265843] Connection 1: encountered error(1:61)
2024-10-24 11:50:24.833721+0200 surloMobile[53882:2265843] Task <8A0B759E-48AB-4B06-A42D-5B1D65AC6FB1>.<1> HTTP load failed, 0/0 bytes (error code: -1004 [1:61])
2024-10-24 11:50:24.841309+0200 surloMobile[53882:2265842] Task <8A0B759E-48AB-4B06-A42D-5B1D65AC6FB1>.<1> finished with error [-1004] Error Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server." UserInfo={_kCFStreamErrorCodeKey=61, NSUnderlyingError=0x2814747b0 {Error Domain=kCFErrorDomainCFNetwork Code=-1004 "(null)" UserInfo={_NSURLErrorNWPathKey=satisfied (Path is satisfied), interface: lo0, _kCFStreamErrorCodeKey=61, _kCFStreamErrorDomainKey=1}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <8A0B759E-48AB-4B06-A42D-5B1D65AC6FB1>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
    "LocalDataTask <8A0B759E-48AB-4B06-A42D-5B1D65AC6FB1>.<1>"
), NSLocalizedDescription=Could not connect to the server., NSErrorFailingURLStringKey=http://localhost:8081/status, NSErrorFailingURLKey=http://localhost:8081/status, _kCFStreamErrorDomainKey=1}
2024-10-24 11:50:24.858759+0200 surloMobile[53882:2265559] [HealthKit] Background observers added to the app
libc++abi: terminating with uncaught exception of type std::runtime_error: Feature flags were accessed before being overridden: fuseboxEnabledRelease

Reproducer

https://github.com/benjamin-beau/RN_crash

Screenshots and Videos

No response

did you solve the issue ?