File: 0161-issue-49119.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 (17 lines) | stat: -rw-r--r-- 711 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
// RUN: %target-typecheck-verify-swift

// https://github.com/apple/swift/issues/49119

protocol P {
    associatedtype A: P // expected-note {{protocol requires nested type 'A'; add nested type 'A' for conformance}}
}

struct Type<Param> {}
extension Type: P where Param: P, Param.A == Type<Param> {
  // expected-error@-1 {{extension of generic struct 'Type' has self-referential generic requirements}}
  // expected-note@-2 {{through reference here}}
  // expected-error@-3 {{type 'Type<Param>' does not conform to protocol 'P'}}
  typealias A = Param
  // expected-note@-1 2{{through reference here}}
  // expected-note@-2 {{possibly intended match 'Type<Param>.A' (aka 'Param') does not conform to 'P'}}
}