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Simultaneous access in observeValue(forKeypath:of:change:context:) causes a crash #34

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aurora14 opened this issue Nov 16, 2017 · 0 comments
Open

Simultaneous access in observeValue(forKeypath:of:change:context:) causes a crash #34

aurora14 opened this issue Nov 16, 2017 · 0 comments

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@aurora14
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When building with Xcode 9.1/Swift 4, our production app crashes on load with the following message:

Thread 1: Simultaneous accesses to 0x10391fbb0, but modification requires exclusive access

Initial call where the issue happens is

tableView.addPullRefresh(options:refreshCompletion), which then cascades down to the method mentioned above.

Possibly caused by something similar to this:
Yalantis/PullToRefresh#72
MaG21 added a commit to MaG21/PullToRefreshSwift that referenced this issue Nov 24, 2017
@MaG21
[BUG FIX] Simultaneous access to memory due to KVO
2d1387e 
This commit fix issue dekatotoro#34, an issue that was previously fixed by PR #73
but reappeared because of Swift-4's improved runtime checks, pointed out
by Michael Brown in his blog.

http://michael-brown.net/2017/swift-and-kvo-context-variables/

This buf was already fixed by PR 72, however
@MaG21 MaG21 mentioned this issue Nov 24, 2017
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@Sweeper777 Sweeper777 mentioned this issue Nov 28, 2018
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