Crash in iOS 10.2.1 about pinlayout

[lucdion]

Hi @ivan-ushakov, this is more an New Relic issue, swizzling has been used over time and it is still allowed by Apple.

Here is a nice explanation of the problem and solution: mixpanel/mixpanel-iphone#495

Explanation:
"New Relic relies on _cmd system method to be the same as the original method. Most of swizzling implementations change that value and New Relic is pushing for a different approach stating that everyone is not doing it correctly. ReactiveCocoa, Aspect, Instabug, any swizzling library (e.g. JRSwizzle), etc... will have the same issue if you use New Relic. There are pros and cons with their approach and I think its worth to investigate for a third party framework like us but I don't see this happening in the coming release. "

Proposed solution:
"New Relic has proposed to other customers to initialize their SDK after the conflicting library or disable interaction tracing:
[NewRelicAgent disableFeatures:NRFeatureFlag_InteractionTracing];
[NewRelic startWithApplicationToken:];
"

Search on Internet and on the New Relic website (https://discuss.newrelic.com/) and you'll see that there is many issue with their method.

Maybe try to update your version of New Relic, it seems that they now have disabled this feature by default: "Dynamic-by-default method lookups for iOS development have been removed with Swift"
Ref: https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile-ios/configuration/enable-swift-interaction-traces

[ivan-ushakov]

Thank you for quick and helpful reply. Yes, disabling of tracing helped and now it works!

[lucdion]

Hi @ivan-ushakov, see this release to fix more elegantly this issue: https://github.com/mirego/PinLayout/releases/tag/1.7.2