问题
I'm getting the error LLVM Profile Error: Failed to write file "default.profraw": Permission denied after running unit tests in Xcode. I don't know where Xcode is trying to write this file to.
What folder should I grant permissions for?
回答1:
Had this warning when I forgot to enable code coverage:
回答2:
Xcode 10+
Enable Code Coverage for Test scheme.
回答3:
Cleaning my build folder eliminated the error for me. (Option-Shift-Command K.) I'm using Xcode Version 9.2 (9C40b). The error started when I added a set of images to my Assets.xcassets. After a full clean the error is gone.
回答4:
This may not be helpful to anyone else, but I was hitting this when I had placed a exit(EXIT_FAILURE) in my code while refactoring a piece of code. I had assumed putting it in would crash the app right there and show me that it crashed there, but instead it was giving me this error and not showing where it had crashed.
回答5:
Try setting CLANG_ENABLE_CODE_COVERAGE = NO in your build settings for the target being tested and the tests themselves.
Edit: Please see the answer by @kasyanov-ms.
回答6:
Xcode 11 beta 1:
This is a known issue when attempting to use code coverage against simulator targets. You must either use a later beta or run coverage against a physical device.
来源：https://stackoverflow.com/questions/47155543/llvm-profile-error-failed-to-write-file-default-profraw-permission-denied