Open Radar

 
Fixed using instructions based on https://devforums.apple.com/message/1016337#1016337
This issue has been verified as resolved and can be closed.


Summary:
Pure Swift iOS app using Core Data -- "RoadTrips"
Target app defines "@objc class Route: NSManagedObject { ... }"
* data model associates entity w/ "RoadTrips.Route"
* Route.swift is also compiled into the RoadTripsTest target

RouteTests.swift...
* var route: Route?
* setUp(): creates the CoreData infrastructure, then
  route = (NSEntityDescription.insertNewObjectForEntityForName("Route", inManagedObjectContext: managedObjectContext) as Route)

Running tests under the debugger, hit a breakpoint in swift_dynamicCastClassUnconditional from the "route = ..." line

Can continue -- tests pass

If not under the debugger -- whether Debug or Release -- the  breakpoint kills the app and the test eventually times out.

Steps to Reproduce:
1. Install Xcode 6 Beta 4
2. Unpack the ZIP
3. Open RoadTrips.xcodeproj
4. Select the Test scheme -- confirm it will run under the debugger
5. Run/test

Expected Results:
Tests complete without stopping

Actual Results:
Breakpoint in swift_dynamicCastClassUnconditional
under debugger, can continue
w/out debugger, app dies

Version:
Xcode 6 Beta 4
OS X 10.9.4

Notes:
using "@objc(Route)\n" in Route.swift makes the CoreData complain it can't load RoadTrips.Route
using "@objc(RoadTrips.Route)" doesn't compile

someone else's problems w/ Beta 3: http://stackoverflow.com/questions/24841856/swift-breakpoint-in-coredata-library