This is a demo app that shows an error in compilation in Xcode 7 beta 5. The error appears only when project is built in Release.
- Add the following code to your project:
public class MyClass {
private var callbacks: [()->()] = []
public func doIt(callback: (()->())?) {
if let callback = callback {
callbacks.append(callback)
}
// ... other code here
}
}-
Select Product > Scheme > Edit scheme... menu item
-
Set Release in Build COnfiguration
-
Build the project.
Product is built
Build results in the following error.
Command failed due to signal: Abort trap: 6
...
Assertion failed: (PAI2->use_empty() && "Should not have any uses"), function foldInverseReabstractionThunks, file /Library/Caches/com.apple.xbs/Sources/swiftlang/swiftlang-700.0.52.2/src/swift/lib/SILPasses/SILCombinerVisitors.cpp, line 549.
...
- While running SILFunctionTransform "SIL Combine" on SILFunction "@TFC11AddCallback7MyClass4doItfS0_FGSqFT_T__T".
Let's hope it will be fixed by then.