Open Radar

 
Summary:
APIs like `CGImageGetWidth` cannot be used from playgrounds without triggering fatal errors.

Steps to Reproduce:
1. Create a new playground.
2. Paste the following code:

let url = NSURL(string: "http://www.comehike.com/img/hiking_photos/swift.jpg")
let imageData = NSData(contentsOfURL: url)
let image = UIImage(data: imageData)
let width = CGImageGetWidth(image.CGImage)

Expected Results:
To the right of the last line should be shown "300", the width of the image.

Actual Results:
The console output shows

fatal error: Can't unwrap Optional.None
Playground execution failed: error: Execution was interrupted, reason: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)

followed by a backtrace.

Version:
Xcode 6 Beta 2 (6A216f)

Notes:
This code works just fine from a Swift project, just not in the playground.

Configuration:


Attachments: