在 Swift 中打开代码覆盖率时出现分段错误 11 [英] Segmentation fault 11 when code coverage is turned on in Swift

问题描述

当我在 Swift 中使用 XCTest 运行单元测试时，当代码覆盖率关闭时它们运行良好.但是，一旦我尝试启用代码覆盖率，我的 4 个类的构建/测试失败，并给出以下错误消息:由于信号导致命令失败:分段错误:11.

While I am running unit tests with XCTest in Swift, they run fine when code coverage is turned off. However once I try to enable code coverage, I have a failed build/test with 4 classes giving the following error message: Command failed due to signal: Segmentation fault: 11.

推荐答案

这对我有用(因为所有其他建议在我的情况下都不起作用).尝试在代码覆盖率打开的情况下运行单元测试时，我在特定的 Swift 类上遇到了分段错误 11.事实证明，我们在类的属性上有一个三元表达式，如下所示:

Here is what worked for me (as all the other suggestions did not work in my case). I was getting a segmentation fault 11 on a particular Swift class when trying to run unit tests with code coverage turned ON. It turns out that we had a ternary expression on a class's property like so:

let cellBorder : CGFloat = MyHelperClass.isIPad() ? 10.0 : 6.0

使它成为一个懒惰的变量解决了这个问题:

Making it a lazy var fixed the problem:

lazy var cellBorder : CGFloat = MyHelperClass.isIPad() ? 10.0 : 6.0

明确地说，代码编译并运行良好直到我们尝试打开代码覆盖率.我还发现了这个 Open Radar 和 这个人的帖子 概述了解决方案.似乎是 Apple 的错误.

To be clear, the code compiled and worked fine until we tried turning on code coverage. I also found this Open Radar and this guy's post that outlined the solution. Appears to be an Apple bug.

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