Open Radar

 
Summary:
The Swift compiler currently seems unable to make sense of the following statement which should create a new array of functions of type () -> ():

var array = [() -> ()]()


Using Xcode 6.3b4 I get the following three errors:

* Expected ',' separator
* Expected expression in container literal
* Consecutive statements on a line must be separated by ';'

As Void is a typealias to (), the following unsurprisingly produces the same errors:

var array = [Void -> Void]()


Interestingly, SourceKitService on the other hand seems to accept the statement but deduces the type of the resulting array as '[()]'.


The following approaches work fine however and can be used as workarounds:

var blocks2: [() -> ()] = Array()
var blocks3 = Array<() -> ()>()

Steps to Reproduce:
1. Open the attached Xcode project and build
2. The compiler should report the mentioned errors
3. Alt-click on 'blocks' to see the SourceKitService type deduction

Expected Results:
I would expect this form of creating such an array to be valid and accepted by the compiler and produce the same result as the presented workarounds.

Actual Results:
The compiler fails to parse the given expression.

Version:
Xcode 6.3 (6D554n)
Apple Swift version 1.2 (swiftlang-602.0.47.4 clang-602.0.48)
10.10.2 (14C1514)

Notes:
Potentially related to rdar://19812302 which is another case of the compiler having troubles with complex type constructs inside literals.