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Re: How to debug crash in NSOperation?
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Re: How to debug crash in NSOperation?


  • Subject: Re: How to debug crash in NSOperation?
  • From: "Gerriet M. Denkmann" <email@hidden>
  • Date: Tue, 28 Mar 2017 10:25:31 +0700


Sent from my iPhone

> On 27 Mar 2017, at 23:37, Jens Alfke <email@hidden> wrote:
>
>
>> On Mar 26, 2017, at 10:04 PM, Gerriet M. Denkmann <email@hidden> wrote:
>>
>> Yes, you are right. And I have to apologise for not spotting this:
>>
>> *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** setObjectForKey: object cannot be nil (key: SortedKeys.plist)'
>
> I recommend always having an exception breakpoint set, to catch things like this.

This same error occurred twice within 250 days. Running the code for about a year in Xcode is really not feasible.
>
>> I suspect that this might be a rare timing issue, i.e. SortedKeys.plist has not been fully written when serializedRepresentation is called.
>
> Is the snippet you posted all code running in the same thread/queue? If so, there couldn’t be a race condition between writing the plist and reading it.

Yes, all is running in the same thread.

If no race condition (and I agree that there should be none) what else could be causing this?

Kind regards,

Gerriet

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  • Follow-Ups:
    • Re: How to debug crash in NSOperation?
      • From: Jens Alfke <email@hidden>
References: 
 >How to debug crash in NSOperation? (From: "Gerriet M. Denkmann" <email@hidden>)
 >Re: How to debug crash in NSOperation? (From: Ken Thomases <email@hidden>)
 >Re: How to debug crash in NSOperation? (From: "Gerriet M. Denkmann" <email@hidden>)
 >Re: How to debug crash in NSOperation? (From: Jens Alfke <email@hidden>)

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