Cwa-app-ios: [Fix 1.8] Crash report: Unbalanced call to dispatch_group_leave()

[ndegendogo]

Avoid duplicates

• [ ] Bug is not mentioned in the FAQ
• [ ] Bug is not already reported in another issue

Describe the bug

Today I saw an entry related to ENA / cwa in my crash logs.

Application Specific Information:
BUG IN CLIENT OF LIBDISPATCH: Unbalanced call to dispatch_group_leave()

Please give instructions how I can share this log file with you.

Expected behaviour

Correct and balanced usage of the dispatch framework.

Steps to reproduce the issue

Technical details

• cwa 1.7.1
• iOS Version: 14.2
• Device: iPhone 8

Possible Fix

Additional context

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Possibly related: https://github.com/corona-warn-app/cwa-app-ios/issues/1631#issue-757691351

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Internal Tracking ID: EXPOSUREAPP-4289.

[dsarkar]

Good morning @ndegendogo! We will come back to you with instructions. Thanks, DS

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Corona-Warn-App Open Source Team

[ndegendogo]

Another observation.
Crash log entry timestamp is
2020-12-03 18:14:35.6757 +0100
This was the first check after an exceptional pattern (14:10 checked only 5 hourly files).
See more details here

[dsarkar]

FYI: Internal Tracking ID: EXPOSUREAPP-4289. Best wishes, DS

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Corona-Warn-App Open Source Team

[dsarkar]

Feedback from developers: Fixed with 1.8. https://github.com/corona-warn-app/cwa-app-ios/pull/1575. Best wishes, DS

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Corona-Warn-App Open Source Team

[thomasaugsten]

v1.9.1 is released with a fixed please retest

[ndegendogo]

Thanks a lot! 👍