Xcode-7-beta.6 (7A192o): XCTAssertNil allows non-optional values, then crashes

Originator:segiddins
Number:rdar://22409527 Date Originated:24-Aug-2015 03:25 PM
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode-7-beta.6 (7A192o)
Classification:Serious Bug Reproducible:Always
 
Summary:
XCTAssertNil allows non-optional values, then crashes in _swift_getClass

Steps to Reproduce:
import Foundation
import XCTest
class C : NSObject {
  dynamic var o = NSObject()
}

class T: XCTestCase {
  func testC() {
    XCTAssertNil(C().o)
  }
}

Expected Results:
Should fail to compile, as a non-optional property should never be nil.

Actual Results:
But totally compiles and dereferences NULL at runtime.

Regression:
Worked fine prior to beta 6

Comments


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