NSURLIsExcludedFromBackupKey makes app crash on launch on iPhone 5.0 Simulator

Originator:samvermette
Number:rdar://11017158 Date Originated:Fri, 09 Mar 2012 05:23:45 GMT
Status:Open Resolved:
Product:Developer Tools Product Version:4.3.1
Classification:Crash/Hang/Data Loss Reproducible:Always
 
Summary: NSURLIsExcludedFromBackupKey makes app crash on launch with "symbol not found" exception when ran in iPhone 5.0 Simulator (doesn't happen on device running 5.x or Simulator running 5.1)

Steps to Reproduce: create project that uses NSURLIsExcludedFromBackupKey (makes the check so that it's only used if running 5.1 or higher)

Expected Results: app launches normally, key only gets used if iOS 5.1 or higher

Actual Results: app crashes on launch with exception dyld: Symbol not found: _NSURLIsExcludedFromBackupKey Referenced from: /Users/sam/Library/Application Support/iPhone Simulator/5.0/Applications/B0872A19-3230-481C-B5CE-D4BDE264FBDF/Transit.app/Transit Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk/System/Library/Frameworks/Foundation.framework/Foundation in /Users/sam/Library/Application Support/iPhone Simulator/5.0/Applications/B0872A19-3230-481C-B5CE-D4BDE264FBDF/Transit.app/Transit

Regression:

Notes: attached a demo project that demonstrates this. Using Xcode 4.3.1.

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