Open Radar

 
Summary:
The method +[NSURL fileURLWithPath:] is marked in the header as returning a non null value (i.e. a non-optional in Swift), but the documentation for the method claims that the method can return a nil value. Under “Return Value” in the documentation for the method, it reads that it returns:

“An NSURL object initialized with path, or nil if path is zero-length.”

It appears that in the current behavior of the class, the documentation is correct, and this method can return a nil value when passed an empty path.

Steps to Reproduce:
Type the following line into a Swift playground:

var url = NSURL(fileURLWithPath: "")

Expected Results:
This should either:
a) return an optional NSURL with a value of nil
b) return an NSURL with an empty path

Actual Results:
The playground reports an error: “file:///Volumes/Ratbert/Users/bwebster/Desktop/MyPlayground.playground/: error: Playground execution aborted: Execution was interrupted, reason: EXC_BAD_ACCESS (code=1, address=0x0).
The process has been left at the point where it was interrupted, use "thread return -x" to return to the state before expression evaluation.”

This may also affect other NSURL initialization methods, but this is the only one I’ve tested directly