To Repro:
1. Run scene 'test', if you’re on windows Unity should crash, if you’re using OSX ‘StackOverflow’ exception should be thrown.

2. This is caused by the ‘Test.cs’ script which tries to add a new copy of itself to the GameObject recursively.

3. When running this script on OSX, one or more ‘StackOverflow’ exceptions are thrown, even though new duplicates of the script component continue to be add to the object, until (probably) the editor runs out of memory. Editor just crashes in Windows.

4. If in ‘test.cs’ the ‘Awake’ is changed to ‘Start’ the error is no longer thrown and the Editor no longer crashes on Windows, the script continues to be added infinitely, though. The same error should probably be thrown when using ‘Start’ aswell. But the script should be prevented from executing when the error is thrown for it to have any purpose.