[SR-15374] Key paths cannot refer to static member

[groue]

Previous ID	SR-15374
Radar	None
Original Reporter	@groue
Type	Improvement

Additional Detail from JIRA

Votes	30
Component/s	Compiler
Labels	Improvement
Assignee	None
Priority	Medium

md5: 58f9811cbdf40b0c4d547b00b68b6606

Issue Description:

Hello,

The current Swift 5.5 version can not deal with key paths to static members.

struct S {
    static let member = 12
}

// Compiler error: Key path cannot refer to static member
let kp = \S.Type.member

Some users are asking for this feature. See for example https://forums.swift.org/t/key-path-cannot-refer-to-static-member/28055

But those users are not able to write a Swift Evolution proposal and submit a working implementation, because these are very hard tasks.

So those users are stuck with a reasonable feature request, but no solution.

Please help us, thank you.