Swift/LLVM: "Broken function found, compilation aborted"

Originator:jtbandes
Number:rdar://23508601 Date Originated:11/11/2015
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode 7.1.1 & 7.2
Classification:Crash/Hang/Data Loss Reproducible:Always
 
Summary:
The following code fails to compile with the error

    Call parameter type does not match function signature!
      %4 = bitcast i8* %.fn.load to { %objc_block, %swift.function }*
     void (...)*  tail call void @_TTRXFo__dT__XFdCb__dT__({ %objc_block, %swift.function }* %4) #0
    LLVM ERROR: Broken function found, compilation aborted!

Steps to Reproduce:
Take the following code (crash.swift) and run it with

    $ xcrun -sdk macosx swiftc crash.swift



import AppKit

func func1(@noescape block: () -> Void) { }
func func2(@noescape block: @convention(block) () -> Void) { }

func func3()
{
    NSAnimationContext.runAnimationGroup({_ in }, completionHandler: nil)
    
    func1 {
        var iable = false
        func2 {
            iable = true
        }
    }
}


Expected Results:
The code compiles

Actual Results:
swiftc/LLVM crashes

Version:
Xcode 7.1.1 (7B1005), and 7.2 beta (7C46t)

Notes:


Configuration:
OS X 10.11.1 (15B42)

Comments

This issue is fixed in the latest Xcode 7.2 beta (7C62)

By jtbandes at Nov. 12, 2015, 1:05 a.m. (reply...)

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