问题
I got several crash reports in x-code(reported by users) but unable to find out what is it for. I opened it in project but it doesn't show me code line where crash occurred (obviously i tried clicking on every line of the stack trace).
回答1:
If you want to trigger Crashes in your released builds so you should integrate crash reporter in your project and Crashlytics is one of them.
Integrate Crashlytics
Integrate it and release your build to client or tester. Whenever it will crash you will be notify by email with the Name of controller with line number.
If you are Debugging:
You must use Exception Breakpoint for this:
In your Project Navigator Select Breakpoint and Select + Option like below:
Ater that you will prompt with :
It will automatically Enable Exception Breakpoint.
来源：https://stackoverflow.com/questions/41456810/unable-to-find-code-where-crash-happens-in-xcode-crash-report