Open Radar

 
Summary:

When custom Cocoa Touch Framework target is named the same as some of the Private Frameworks the app crashes during the launch on iOS Simulator.

The runtime seems to look for private framework APIs in the custom framework, which results in `dyld: Symbol not found:` runtime crash. In fact, when setting `DYLD_PRINT_LIBRARIES = 1` environment variable we can clearly see that only the custom framework is loaded by `dyld`, not both (the private and custom one).

Steps to Reproduce:

1. Create empty project with "iOS > Single View App" template;
2. Add "Cocoa Touch Framework" target named "Network" (use default settings of embedding it in the main application);
3. Launch the app on iOS Simulator.

Expected Results:

Application should run on the Simulator.

Actual Results:

It crashes with:
```
dyld: Symbol not found: _OBJC_CLASS_$_NWPathEvaluator
  Referenced from: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/UIKit.framework/Frameworks/DocumentManager.framework/DocumentManager
  Expected in: /Users/<user>/Library/Developer/Xcode/DerivedData/PrivateFrameworkConflict-flugbttcnxtcfzbndpivtokdztlc/Build/Products/Debug-iphonesimulator/Network.framework/Network
 in /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/UIKit.framework/Frameworks/DocumentManager.framework/DocumentManager
```

Configuration:

Xcode: Version 9.4 (9F1027a)
iOS Simulator: iPhone 8 Plus (11.4)
macOS: 10.13.4 (17E199)