Bugsnag crashes: RNCConnectionState.m:65 Attempted to dereference null pointer

Environment

info Fetching system and libraries information...
System:
    OS: macOS 12.2.1
    CPU: (10) arm64 Apple M1 Max
    Memory: 19.59 GB / 64.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 16.14.0 - /usr/local/bin/node
    Yarn: 1.22.15 - /usr/local/bin/yarn
    npm: 8.3.1 - /usr/local/bin/npm
    Watchman: Not Found
  Managers:
    CocoaPods: 1.11.3 - /opt/homebrew/bin/pod
  SDKs:
    iOS SDK:
      Platforms: DriverKit 21.2, iOS 15.2, macOS 12.1, tvOS 15.2, watchOS 8.3
    Android SDK: Not Found
  IDEs:
    Android Studio: 2021.1 AI-211.7628.21.2111.8139111
    Xcode: 13.2.1/13C100 - /usr/bin/xcodebuild
  Languages:
    Java: Not Found
  npmPackages:
    @react-native-community/cli: Not Found
    react: 17.0.2 => 17.0.2 
    react-native: 0.68.1 => 0.68.1 
    react-native-macos: Not Found
  npmGlobalPackages:
    *react-native*: Not Found

Platforms

iOS

Versions

• iOS: 15.4
• react-native-netinfo: 8.3.0
• react-native: 0.68.1
• react: 17.0.2

Description

We got some stability issues since updating to the latest version of the library. The cause seams to be this error in the native code:

EXC_BAD_ACCESS in RNCConnectionState.m:65 Attempted to dereference null pointer.

Stacktrace

node_modules/@react-native-community/netinfo/ios/RNCConnectionState.m:65 - -[RNCConnectionState initWithReachabilityFlags:]
node_modules/@react-native-community/netinfo/ios/RNCConnectionStateWatcher.m:79 - -[RNCConnectionStateWatcher update:]
node_modules/@react-native-community/netinfo/ios/RNCConnectionStateWatcher.m:130 - -[RNCConnectionStateWatcher createReachabilityRef]
node_modules/@react-native-community/netinfo/ios/RNCConnectionStateWatcher.m:31 - -[RNCConnectionStateWatcher initWithDelegate:]
node_modules/@react-native-community/netinfo/ios/RNCNetInfo.m:70 - -[RNCNetInfo init]
node_modules/react-native/React/Base/RCTModuleData.mm:109 - __83-[RCTModuleData initWithModuleClass:bridge:moduleRegistry:viewRegistry_DEPRECATED:]_block_invoke
node_modules/react-native/React/Base/RCTModuleData.mm:173 - -[RCTModuleData setUpInstanceAndBridge:]
node_modules/react-native/React/Base/RCTUtils.m:275 - RCTUnsafeExecuteOnMainQueueSync
node_modules/react-native/React/Base/RCTModuleData.mm:401 - -[RCTModuleData instance]
node_modules/react-native/React/CxxBridge/RCTCxxBridge.mm:1001 - __49-[RCTCxxBridge _prepareModulesWithDispatchGroup:]_block_invoke

Reproducible Demo

We use the library as follows:

  /**
   * Start listening for network changes
   */
  startListening() {
    this.stopListening();
    this.subscription = NetInfo.addEventListener(this._handleConnectivityChange);
  }

  /**
   * Stop listening for network changes
   */
  stopListening() {
    if (this.subscription) {
      this.subscription(); // dispose listener
      this.subscription = null;
    }
  }


_handleConnectivityChange = connectionInfo => {
    this.connectionType = connectionInfo.type;
    this.isInternetReachable = connectionInfo.isInternetReachable;
};

[andrei-tofan]

Thanks for the info, closing this and will open a new issue / pr once I figure out the real line number.

[mikehardy]

@bakiinitialcode I haven’t seen any progress on this closed issue no. Happy to merge and release any reasonable looking PR though, feel free to raise one if you need a fix