Open Radar

 
Summary:
On 32 bit architectures, NSInteger and NSUInteger are typedef'd to c int types. Swift Int and UInt use long instead, which while still 32 bit integers, cause type errors when examining method signatures at runtime.

Steps to Reproduce:
1. Fetch an NSMethodSignature for a method on a class implemented in Swift that takes an Int or UInt while running in a 32 bit runtime
2. Examine the result of getArgumentTypeAtIndex() for the integer argument
3. Compare to a method implemented in Objective-C

Expected Results:
The Swift type should be 'i' for Int and 'I' for UInt

Actual Results:
The Swift type is 'l' for Int and 'L' for UInt

Version:
Xcode 6.0/6A216f OS X 10.9.3/13D65

Sample Code:

        class SwiftClass : NSObject {
            func objectAtIndex(index: UInt) -> AnyObject! {
                return ""
            }
        }

        let objCUIntArgType = NSArray.instanceMethodSignatureForSelector("objectAtIndex:").getArgumentTypeAtIndex(2)
        let swiftUIntArgType = SwiftClass.instanceMethodSignatureForSelector("objectAtIndex:").getArgumentTypeAtIndex(2)
        println(objCUIntArgType)
        println(swiftUIntArgType)
        assert(objCUIntArgType == swiftUIntArgType)

This code will work correctly on a 64 bit runtime, but the assertion will fail on 32 bit.