iOS: Xcode 15 runtime error: dyld[2683]: Symbol not found: _OBJC_CLASS_$_NSObject

[idy]

Steps to reproduce:

1. create an empty fultter iOS project
2. add flutter_keychain as dependency
3. use Xcode to run

It will build successful but report an runtime error: dyld[2683]: Symbol not found: _OBJC_CLASS_$_NSObject.

[idy]

After some research, I have identified the issue. It seems that there is a problem when attempting to catch an exception of an NSObject within a try-catch block, specifically with the new linker in Xcode 15.

flutter_keychain/ios/Classes/FlutterKeychainPlugin.m

Lines 46 to 60 in 4635beb

	+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
	@try {
	FlutterMethodChannel* channel = [FlutterMethodChannel
	methodChannelWithName:CHANNEL_NAME
	binaryMessenger:[registrar messenger]];
	FlutterKeychainPlugin* instance = [[FlutterKeychainPlugin alloc] init];
	[registrar addMethodCallDelegate:instance channel:channel];
	}
	@catch (NSException *exception) {
	NSLog(@"%@", exception.reason);
	}
	@catch (NSObject *object){
	NSLog(@"%@", object);
	}
	}

It seems to be related to the thread discussed in this post: https://developer.apple.com/forums/thread/735610.

When removing the catch clause(L57-L59) for the NSObject, the runtime error mentioned above does not occur.

[jeroentrappers]

This seems to be a linker issue. With xcode 14.3.1 I don't seem to be seeing the issue.

[idy]

yep, I have already post it on apple developer forum. I hope Apple can fix this issue in the official release of Xcode 15. Otherwise, we will have to submit workaround code for it.

[AlexandreFQM]

Problem still occurring in Xcode 15 latest release

[fsayfitdinov]

Has anyone found temporary workarounds?

[idy]

https://github.com/idy/flutter_keychain

Temporary workaround.

[XavierChanth]

@jeroentrappers when can we expect a published fix for this issue?
#40 has been open for a week now.

[ashu0806]

With the latest release of Xcode 15 , it's still causing the issue while creating the build , can anyone have a temporary solution for this?

[axroromonov44]

ty guys , it works

After some research, I have identified the issue. It seems that there is a problem when attempting to catch an exception of an NSObject within a try-catch block, specifically with the new linker in Xcode 15.

flutter_keychain/ios/Classes/FlutterKeychainPlugin.m

Lines 46 to 60 in 4635beb

	+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
	@try {
	FlutterMethodChannel* channel = [FlutterMethodChannel
	methodChannelWithName:CHANNEL_NAME
	binaryMessenger:[registrar messenger]];
	FlutterKeychainPlugin* instance = [[FlutterKeychainPlugin alloc] init];
	[registrar addMethodCallDelegate:instance channel:channel];
	}
	@catch (NSException *exception) {
	NSLog(@"%@", exception.reason);
	}
	@catch (NSObject *object){
	NSLog(@"%@", object);
	}
	}

It seems to be related to the thread discussed in this post: https://developer.apple.com/forums/thread/735610.

When removing the catch clause(L57-L59) for the NSObject, the runtime error mentioned above does not occur.

ty guys , it works