View controller leaks caused by UIViewController’s never really being deallocated can be tough to track down – especially if blocks are being used and you can’t see the leak in Xcode’s leak tool.
Javier Soto has created a simple library for dealing with this issue called MSVCLeakHunter.
What MSVCLeakHunter does is swizzle in a few methods into every UIViewController that alert you to times when a view disappears, but is not deallocated after a certain period of time in the console.
You can find MSVCLeakHunter with a demo project on Github here.
An easy way to track down some potentially very tricky bugs.
Original article: Open Source Library For Easily Tracking Leaky iOS View Controllers
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