[SR-2745] Simple Swift 3.0 UIView subclass crashes compiler when archiving

[swift-ci]

Previous ID	SR-2745
Radar	None
Original Reporter	jbrayton (JIRA User)
Type	Bug
Status	Resolved
Resolution	Done

Attachment: Download

Environment

Xcode 8.0 on macOS 10.12 (16A319) on a MacBook Pro. The selected hardware device is my iPhone 5S running iOS 10.0.1 (14A403).

Additional Detail from JIRA

Votes	0
Component/s	Compiler
Labels	Bug, CompilerCrash, OptimizedOnly
Assignee	@adrian-prantl
Priority	Medium

md5: 245c8d6adad0c69fac2ac1917c108c23

Issue Description:

The following simple Swift 3.0 subclass of a UIView crashes the compiler when archiving:

class MyView: UIView {
    
    required init?(coder: NSCoder) {
        return nil
    }
    
}

Steps to Reproduce:

1. Open the attached sample project.
2. Select "Archive" from the "Product" menu within Xcode.

Expected Results:
I expect the code to compile.

Actual Results

I get this compilation error:

Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc failed with exit code 1

If I comment out the class declaration above, I can create a build archive.

I can build and run the app on my device, but when I archive it I get this crash.

[belkadan]

The main difference between "Archive" and "Run" is optimizations. @bob-wilson, who should look at this?

[bob-wilson]

I reproduced this. The error is:

inlinable function call in a function with debug info must have a !dbg location
%11 = call %swift.type* @_TMaC14UIViewSubclass6MyView() #6
LLVM ERROR: Broken function found, compilation aborted!

I think Adrian just fixed this: #5001

[adrian-prantl]

Yes, that's the exact same testcase in the PR5001 :-)

[adrian-prantl]

This was resolved by #5001