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Chapter1 - iOS/1.30.md
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#pragma clang diagnostic pop
10. Xcode Instruments 内存泄漏检测工具 Leaks 在内存检测后，无法看到具体的堆栈信息。
![Leaks](./../assets/2020-11-25-InstrumentMemoryLeaks.jpg)
![Leaks](https://raw.githubusercontent.com/FantasticLBP/knowledge-kit/master/assets/2020-11-25-InstrumentMemoryLeaks.jpg)
涂上右下方的 `Heaviest Stack Trace` 模块看不到对应的堆栈信息。一番定位问题后发现是工程项目在 debug 阶段，Build Setting 中的 **Debug Information Format** 选项的 debug 条目是没有 dSYM 文件的，我们要想看到堆栈信息，就必须选择 `DWARF with dSYM File` 选项。
![](./../assets/2020-11-25-BuildSettingsDebugInformationFormat.png)
![](https://raw.githubusercontent.com/FantasticLBP/knowledge-kit/master/assets/2020-11-25-BuildSettingsDebugInformationFormat.png)
DWARF，即 ***Debug With Arbitrary Record Format*** ，是一个标准调试信息格式，即调试信息。这部分信息可以查看我的[这篇文章](./1.74.md)中讲 iOS 符号化的部分。