iOS 15.2 Xcode13.2 UICollectionView闪退-2021-12-20
iOS 15.2 Xcode13.2 报错 [UICollectionViewRecursion] ; layer = ; contentOffset: {0, 0}; contentSize: {414, 4446}; adjustedContentInset: {0, 0, 0, 0}; layout: ; dataSource: >> is stuck in its update/layout loop. See previous logs in the "UICollectionViewRecursion" category to find callers that scheduled a recursive update
在FSCalendar日历框架中升级系统和编译器版本后遇到UICollectionView闪退问题；经过测试发现是layout在设置item的时候计算一屏显示item宽度时float精度问题四舍五入；使item的总宽度超出屏幕宽度；导致UICollectionView陷入刷新和加载的死循环闪退；
