CatchingException.swift

// CatchingException.swift

{
    let failingObject = MyFailingObject()

    if let exception = objc_tryCatch({ failingObject.throwException() }) {
        // Here we caught the exception, but we actually leaked failingObject
    }

    // Let's check that it's actually leaking

    weak var weakFailingObject: FailingObject? = failingObject
    DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
        if weakFailingObject != nil {
            // If weakFailingObject is not nil, this means failingObject leaked
        }
    }
}