Elijah R created CB-14020:
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Summary: cordova-plugin-geolocation crashes with "Collection was
mutated while being enumerated"
Key: CB-14020
URL: https://issues.apache.org/jira/browse/CB-14020
Project: Apache Cordova
Issue Type: Bug
Components: cordova-plugin-geolocation
Affects Versions: Master
Environment: iOS 11
cordova-ios@4.3.1
cordova-plugin-geolocation@2.4.2
Although I am running an older version, this issue does not appear to be fixed
in the latest plugin version as the relevant code has not been changed.
The javascript in my app is making multiple calls to
`navigator.geolocation.getCurrentPosition()` in rapid succession.
Reporter: Elijah R
Attachments: crash-log.txt
There is a race condition in CDVLocation.m. The
self.locationData.locationCallbacks array can be mutated in one thread and
enumerated concurrently in another thread, which causes the app to crash with
the following exception:
Fatal Exception: NSGenericException
*** Collection <__NSArrayM: 0x1d444d020> was mutated while being enumerated.
The exception is raised at [CDVLocation returnLocationError:withMessage:]
(CDVLocation.m:312)
I am unable to reproduce the issue, however it is a common crash for users of
my app. A user named seeday on github has opened a pull request to address
this issue: https://github.com/apache/cordova-plugin-geolocation/pull/91
I'm filing this bug to help get that work merged.
I've attached an abridged crash log with the relevant stack trace.
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