Apple Watch App - Invalid Swift entry point data

For iOS 14 and watchOS 7.0, I completely recoded and modernized my app using Swift (was Objective C). I am almost done and am most proud of the job, but I have this issue that I need to fix on the Apple Watch app. I am not able to transfer data to the Apple Watch from the iPhone and get the following console messages. (The [***:xxxxxx] are my modification of the console messages.). I am guessing that the first 2 messages are the thing I need to fix and I need to fix this issue before I submit the app.

2020-09-24 08:29:02.873423-0400 WatchApp Extension[***:xxxxxx] [default] lookupMainFuncAddressInMachHeader:71: Invalid Swift entry point data

2020-09-24 08:29:02.874413-0400 WatchApp Extension[***:xxxxxx] [default] lookupMainFuncAddressInMachHeader:77: Swift entry point addres could not be determined.

2020-09-24 08:29:04.001368-0400 WatchApp Extension[***:xxxxxx] [WC] denying activation due to missing delegate

ExtensionDelegate: your iphone is Reachable

ExtensionDelegate: Session activated

2020-09-24 08:29:10.884500-0400 WatchApp Extension[***:xxxxxx] [WC] already in progress or activated

2020-09-24 08:29:15.046379-0400 WatchApp Extension[***:xxxxxx] [WC] WCSession is missing its delegate

2020-09-24 08:29:15.047176-0400 WatchApp Extension[***:xxxxxx] [WC] WCSession is missing its delegate

2020-09-24 08:29:15.047860-0400 WatchApp Extension[***:xxxxxx] [WC] WCSession is missing its delegate

2020-09-24 08:29:15.782075-0400 WatchApp Extension[***:xxxxxx] [WC] already in progress or activated

2020-09-24 08:29:24.390293-0400 WatchApp Extension[***:xxxxxx] [WC] already in progress or activated

2020-09-24 08:31:57.059417-0400 WatchApp Extension[***:xxxxxx] [WC] already in progress or activated

2020-09-24 08:32:00.055282-0400 WatchApp Extension[***:xxxxxx] [WC] already in progress or activated

InterfaceController: your iphone is Reachable

2020-09-24 08:32:00.058230-0400 WatchApp Extension[***:xxxxxx] [WC] already in progress or activated

2020-09-24 08:32:08.427192-0400 WatchApp Extension[***:xxxxxx] [WC] already in progress or activated

2020-09-24 08:32:13.374677-0400 WatchApp Extension[***:xxxxxx] [WC] WCSession is missing its delegate

2020-09-24 08:32:13.375717-0400 WatchApp Extension[***:xxxxxx]] [WC] WCSession is missing its delegate

2020-09-24 08:32:13.376426-0400 WatchApp Extension[***:xxxxxx] [WC] WCSession is missing its delegate

2020-09-24 08:32:51.861915-0400 WatchApp Extension[***:xxxxxx] [WC] already in progress or activated
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SpaceMan
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Well, I fiddled with it and it works now. I'm not exactly sure what I did, but the Watch App component of my app is working. Also, I cancelled my request for tech help.
Posted by
SpaceMan
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I am also getting this same error message - Invalid Swift 
Code Block 
2020-09-25 19:35:46.281502-0400 XXXX WatchKit Extension[1012:18958] [default] lookupMainFuncAddressInMachHeader:71: Invalid Swift entry point data
2020-09-25 19:35:46.282071-0400 XXXX WatchKit Extension[1012:18958] [default]
lookupMainFuncAddressInMachHeader:77: Swift entry point addres could not be determined.

And when the program then tries to access the WatchKit ExtensionDelegate I get nil

Posted by
Michaelrowe01
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Perhaps this is a bug. I have a code request made to Apple for help. Used one of my 'get out of jail cards' to do it. We'll see what happens.
Posted by
SpaceMan
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Do you have WKExtensionDelegateClassName with value $(PRODUCT_MODULE_NAME).ExtensionDelegate in your extension's Info.plist file? And the delegate adaptor in the App:

Code Block 
@main
struct Mypp: App {
   @WKExtensionDelegateAdaptor(ExtensionDelegate.self) var extensionDelegate

Latter produces a SwiftLint warning though:

Code Block 
Weak Delegate Violation: Delegates should be weak to avoid reference cycles. (weak_delegate)



Adding weak produces an error. Don't know what to do with this, so currently I have to live with the warning.
Posted by
AndyJJ
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AndyJJ, yes, I have WKExtensionDelegateClassName with value $(PRODUCTMODULENAME).ExtensionDelegate in the extension's Info.plist, but I do not have the delegate adaptor in the AppDelegate. I created a project from scratch and added the watch target and it didn't generate a delegate adaptor. I'm not sure where that comes from. I am not using SwiftUI, just Swift.
Posted by
SpaceMan
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Well, I fiddled with it and it works now. I'm not exactly sure what I did, but the Watch App component of my app is working. Also, I cancelled my request for tech help.
Posted by
SpaceMan
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Same here. My app is built by objective-c and it used to work well.
Posted by
kosuel
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Same error here:

lookupMainFuncAddressInMachHeader:71: Invalid Swift entry point data
lookupMainFuncAddressInMachHeader:77: Swift entry point addres could not be determined.

Only started occurring since upgrade to Xcode 12.
Posted by
Sherpatantra
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hey, SpaceMan, how did you fiddle it to make it work? can you share your solution? I think this suppose a serious issue because many ppl stuck with this after upgrading to watchOS 7 and Xcode 12.
Posted by
jtpine
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Same here:
Code Block swift
[default] lookupMainFuncAddressInMachHeader:71: Invalid Swift entry point data
[default] lookupMainFuncAddressInMachHeader:77: Swift entry point addres could not be determined.

xCode 12.1

Any updates how to solve it? Any workaround?
Posted by
GrzegorzZbozien
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Hi,

I'm also having this problem after updating to xCode 12.1, could anyone find a solution for this?
Posted by
ruizmarc
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I resolved the console messages by adding the new watchOS 7 App struct. The WKExtensionDelegate protocol conformance isn't required, but I added it for completeness. Move code from your extension delegate to your new App struct.


Code Block 
import SwiftUI
@main
structMyWatchApp: App {
  @WKExtensionDelegateAdaptor(MyWatchAppDelegate.self) var myWatchAppDelegate
   
  @SceneBuilder var body: some Scene {
    WindowGroup {
      ContentView()
    }
  }
}
class myWatchAppDelegate: NSObject, WKExtensionDelegate {  
}

Posted by
texasexile
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Hey guys, I had this same issue but referred to https://developer.apple.com/forums/thread/53659 , after which the Watch app works as expected. I still get the entry point error but it doesn't seem to affect anything.
Posted by
ConfuseIous
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the same error occurred.
what should I do?

Posted by
tenor
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I am also getting this with a brand new Independent watchOS App project with Xcode 12.3 and targeting watchOS 7.2

Code Block 
2020-12-22 16:48:51.111294-0800 redlightgreenlight WatchKit Extension[66073:1532791] [default] lookupMainFuncAddressInMachHeader:71: Invalid Swift entry point data
2020-12-22 16:48:51.111800-0800 redlightgreenlight WatchKit Extension[66073:1532791] [default] lookupMainFuncAddressInMachHeader:77: Swift entry point addres could not be determined.

Posted by
allendav
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Hey, I'm having the same issue.

Does anyone have a solution to this?

2021-01-16 10:32:16.031695+0000 *** WatchKit Extension[298:60997] [default] lookupMainFuncAddressInMachHeader:71: Invalid Swift entry point data
2021-01-16 10:32:16.032378+0000 *** WatchKit Extension[298:60997] [default] lookupMainFuncAddressInMachHeader:77: Swift entry point addres could not be determined.
Posted by
JeremyJamesLevy
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