File: issue-60806.swift

package info (click to toggle)
swiftlang 6.1.3-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,532 kB
  • sloc: cpp: 9,901,743; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (31 lines) | stat: -rw-r--r-- 694 bytes parent folder | download | duplicates (2) 
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
 
// RUN: %target-swift-frontend -dump-ast %s | %FileCheck %s

// https://github.com/apple/swift/issues/60806

struct Foo<T> {
  init(_: (T) -> Void) {}
}

protocol Bar {}

enum Baz: Bar {
  case someCase(Int)
}

enum NonBarBaz {
  case someCase(Int)
}

let _: Foo<Bar> = Foo<Bar> { (a: Bar) -> Void in
  switch a {
  // CHECK: (pattern_is type="any Bar" cast_kind=value_cast cast_to="Baz"
  // CHECK-NEXT: (pattern_enum_element type="Baz" element="Baz.someCase"
  case let .someCase(value) as Baz:
    print(value)
  // expected-warning@-1 {{cast from 'any Bar' to unrelated type 'NonBarBaz' always fails}}
  case let .someCase(value) as NonBarBaz:
    print(value)
  default:
      break
  }
}