File: rdar119055010.swift

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (43 lines) | stat: -rw-r--r-- 788 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
// RUN: %target-typecheck-verify-swift

// rdar://119055010 - greedy key path type assignment breaks keypath-to-function conversion

protocol Executable {}

final class Wrapper<Value> {
  func update<Return>(_ work: (inout Value) throws -> Return) rethrows -> Return {
    fatalError()
  }
}

enum Lookup<Value> {
  func flatMap<T>(_ transform: (Value) throws -> Lookup<T>) rethrows -> Lookup<T> { fatalError() }
}

protocol Entry {
}

extension Entry {
  var executable: Lookup<any Executable> {
    fatalError()
  }
}

func lookup() -> Lookup<any Entry> {
  fatalError()
}

struct Test {
  struct Data {
  }

  let value = Wrapper<Data>()

  func run() -> Lookup<any Executable> {
    value.update { data in
      let _ = 42
      return lookup()
    }
    .flatMap(\.executable)
  }
}