I'm on XCode 6.4 (6E35b)
Two days ago XCode stopped showing errors in the editor. Everytime I do a build, it says 'build succeeded' but when I try to run the app or my unit tests then it says build failed but it doesn't show the red exclamation points in the editor and I have to go into the logs view and hunt through the logs to find the compile errors.
I trashed my version of XCode and re-installed through the AppStore, same behavior. I do have XCode 7 downloaded but I haven't run it in weeks. I'm on Yosemite 10.10.1.
Has anyone else seen this behavior before? Seems weird. I've tried toggling some of my preferences related to showing errors as well to no avail.