No native crash reporting for React Native app

SDKs
1

We are not capturing native exceptions in iOS and Android using the RactNative framework:

  • React Native 0.63 empty project

  • Sentry installation as https://docs.sentry.io/platforms/react-native/

  • “@sentry/react-native”: “^1.7.0”

  • Simulation of a 10s delays crash from Appdelegate.m by adding to didFinishLaunchingWithOptions :

    double delayInSeconds = 10.0;
    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC);
    dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
    int a=3;
    a-=3;
    int b= 3/a;
    printf(a,b);

    });

    return YES;

Application crashes, but no crash shows up on the Sentry dashboard.

2

Crashes are sent to Sentry after the app restarts.
Did you try to start it again?

Also, I suggest starting the app in debug mode to see the device logs.

3

The device log does not have a hint:
flipper: FlipperClient::addPlugin Inspector

flipper: FlipperClient::addPlugin Preferences

flipper: FlipperClient::addPlugin React

flipper: FlipperClient::addPlugin Network

2020-07-30 22:50:41.063684+0100 sentry[36350:408432] [native] Running application sentry ({

initialProps = {

};

rootTag = 1;

})

2020-07-30 22:50:41.122622+0100 sentry[36350:408540] [native] RCTBridge required dispatch_sync to load RCTDevLoadingView. This may lead to deadlocks

2020-07-30 22:50:41.576944+0100 sentry[36350:408537] [] nw_socket_handle_socket_event [C5.1:1] Socket SO_ERROR [61: Connection refused]

2020-07-30 22:50:41.580347+0100 sentry[36350:408537] [] nw_socket_handle_socket_event [C5.2:1] Socket SO_ERROR [61: Connection refused]

2020-07-30 22:50:41.583476+0100 sentry[36350:408540] [] nw_connection_get_connected_socket [C5] Client called nw_connection_get_connected_socket on unconnected nw_connection

2020-07-30 22:50:41.584044+0100 sentry[36350:408540] TCP Conn 0x600000789b00 Failed : error 0:61 [61]

2020-07-30 22:50:41.664395+0100 sentry[36350:408563] [javascript] Require cycle: node_modules/react-native/Libraries/Network/fetch.js -> node_modules/whatwg-fetch/dist/fetch.umd.js -> node_modules/react-native/Libraries/Network/fetch.js

Require cycles are allowed, but can result in uninitialized values. Consider refactoring to remove the need for a cycle.

2020-07-30 22:50:41.773889+0100 sentry[36350:408563] [javascript] Running “sentry” with {“rootTag”:1,“initialProps”:{}}

2020-07-30 22:50:42.010178+0100 sentry[36350:408563] [javascript] RCTBridge required dispatch_sync to load RCTDevLoadingView. This may lead to deadlocks

hello 0

xcode
xcode2234×1302 753 KB

4

Also:

Sentry.init({
dsn: ‘https://3c7e--------------- 331’,
});
/let a={}; // CAN BE SEEN IN THE ISSUES
a.b=0;/
Sentry.nativeCrash(); // CAN not BE SEEN IN THE ISSUES