How can I set CG_CONTEXT_SHOW_BACKTRACE environmental variable?

Question

I have three buttons in my view. After setting the cornerRadus in the viewDidLoad() : button.layer.cornerRadius = 20 I get the following error message in the lo

Answer 1

This problem happen with Xcode 7. In my case i removed the UIViewControllerBasedStatusBarAppearance from Info.plist and the problem solved! See the answer in this post:

Answer 2

It's a bug in 9b5:
https://forums.developer.apple.com/thread/13683

File a RADAR with Apple.

Answer 3

You can set an environmental variable via this menu: Product -> Scheme -> Edit Scheme. Under the "Run" item, locate the "Arguments" tab, you'll see "Environmental Variables" in the tab, Add CG_CONTEXT_SHOW_BACKTRACE and set its value to YES.

Answer 4

On Xcode 7:

In case you still want the status bar is hidden, just change UIViewControllerBasedStatusBarAppearance in the Info.plist file into View controller-based status bar appearance. Don't forget to set it by NO