File: issue-46000.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 (19 lines) | stat: -rw-r--r-- 743 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
// RUN: %target-typecheck-verify-swift

// https://github.com/apple/swift/issues/46000

struct DispatchData {
  let ptr: UnsafePointer<UInt8>
  func withUnsafeBytes<Result, ContentType>(body: (UnsafePointer<ContentType>) throws -> Result) rethrows -> Result { try body(ptr as! UnsafePointer<ContentType>) }
}
struct Data {}

extension DispatchData {
  func asFoundationData<T>(execute: (Data) throws -> T) rethrows -> T {
    return try withUnsafeBytes { (ptr: UnsafePointer<Int8>) -> Void in
      // expected-error@-1 {{cannot convert return expression of type 'Void' to return type 'T'}}
      let data = Data()
      return try execute(data) // expected-error {{cannot convert value of type 'T' to closure result type 'Void'}}
    }
  }
}