Xcode 7 compile error : "Command failed due to signal: Segmentation fault: 11"

Question

Yesterday I installed the official Xcode 7 and when I tried to open one of my Swift projects, appeared an alert saying that the new Xcode version wants to update my swift code (or something like this). Okay, I accepted and after this appeared "Command failed due to signal: Segmentation fault: 11" compile error (if you want details about this, I can write the whole error text). Anyone have the same issue?

Thanks

Edited

I installed back Xcode 6.4 and it's okay, no compilation errors.

Answer 1

Omg, this is a terrific bug of Xcode. Just read this. http://blog.bellebethcooper.com/xcode-bug.html It made me smile.

The change was deceptively small, but here's what it was (inside my API client class, where I actually get the JSON data from the API):

I changed this:

`let json = try? NSJSONSerialization.JSONObjectWithData(data, options: [])` 

to this:

`let json = try? NSJSONSerialization.JSONObjectWithData(data, options: []) as! [String: AnyObject]` 

This is one of the most frustrating debugging experiences I've ever had, but I hope this post might help someone else who has the same issue. And if you ended up here via googling a bug you're struggling with and this didn't help you, I'm so sorry. I know exactly what you're going through. Don't give up!

Answer 2

This indicates that some Required method/func is missing from your code. In my case I was using ObjectMapper and in my class I was forgot to include required init() method which causes this "Command failed due to signal: Segmentation fault: 11"

required init?(_ map: Map) {  }