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Getting Dispatch Group Crash with Too many nested calls to dispatch_group_enter(). I double checked the code and there is balance of enter and leave calls. This is happening in Prod for customers. I am not able to reproduce the issue. Can someone help me reproduce the issue or help me with some suggestion on fixing this issue. Got below text in the firebase crash BUG IN CLIENT OF LIBDISPATCH: Too many nested calls to dispatch_group_enter()

dispatch group with data retrival from DB and flushing it to network and after successful call delete the data from DB

SreekanthI
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  • Show your code. We can't guess without that. But check if in case of error, your completion still call `leave()`. Etc. – Larme Mar 17 '21 at 18:44
  • @Larme thanks for reply! error is about too many group enters. Do you know why we get this error? – SreekanthI Mar 17 '21 at 18:53
  • @Larme i have provided link with code – SreekanthI Mar 17 '21 at 19:20
  • The only way you can get this error is if `enter` calls are unbalanced with `leave` calls. I know you don’t think this is happening, but that has to be what’s going on. Perhaps one or more of your `persistenceManager` methods is failing to call its closure. Maybe keep your own counter, incremented at `enter` and decremented at `leave` and confirm. – Rob Mar 17 '21 at 22:53

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