Open Radar

 
Summary:
Two methods in the NSAppleScript class indicate that they can return nil, but are not marked as nullable:

// Execute the script, compiling it first if it is not already compiled.  Return the result of executing the script, or nil and a pointer to an error information dictionary for failure.
- (NSAppleEventDescriptor *)executeAndReturnError:(NSDictionary<NSString *, id> * __nullable * __nullable)errorInfo;

// Execute an Apple event in the context of the script, compiling the script first if it is not already compiled.  Return the result of executing the event, or nil and a pointer to an error information dictionary for failure.
- (NSAppleEventDescriptor *)executeAppleEvent:(NSAppleEventDescriptor *)event error:(NSDictionary<NSString *, id> * __nullable * __nullable)errorInfo;

Steps to Reproduce:
1. Write code that uses NSAppleScript. See attached sample.
2. Call executeAndReturnError(_:) or executeAppleEvent(_:error:), and use its return value to determine success or failure.

Expected Results:
Code works as predicted.

Actual Results:
Clang complains that the return value is not nullable.

NSAppleScript-nullability-bug.swift:7:4: error: initializer for conditional binding must have Optional type, not 'NSAppleEventDescriptor'

Version:
Xcode 7.3.1 (7D1014)

Configuration:
OS X 10.11.4

Attachments:
'NSAppleScript-nullability-bug.swift' was successfully uploaded.