mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
28 lines
1.2 KiB
Swift
28 lines
1.2 KiB
Swift
// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -parse -verify %s
|
|
|
|
// REQUIRES: objc_interop
|
|
|
|
import blocks
|
|
import Foundation
|
|
|
|
var someNSString : NSString
|
|
func useString(s: String) {}
|
|
|
|
dispatch_async(dispatch_get_current_queue()) { }
|
|
someNSString.enumerateLinesUsingBlock {(s:String?) in }
|
|
someNSString.enumerateLinesUsingBlock {s in }
|
|
someNSString.enumerateLinesUsingBlock({ useString($0) })
|
|
|
|
dispatch_async(dispatch_get_current_queue(), /*not a block=*/()) // expected-error{{cannot invoke 'dispatch_async' with an argument list of type '(dispatch_queue_t, ())'}} expected-note {{expected an argument list of type '(dispatch_queue_t, dispatch_block_t!)'}}
|
|
|
|
func testNoEscape(@noescape f: @convention(block) () -> Void, nsStr: NSString,
|
|
@noescape fStr: (String!) -> Void) {
|
|
dispatch_async(dispatch_get_current_queue(), f) // expected-error{{invalid use of non-escaping function in escaping context '@convention(block) () -> Void'}}
|
|
dispatch_sync(dispatch_get_current_queue(), f) // okay: dispatch_sync is noescape
|
|
|
|
// rdar://problem/19818617
|
|
nsStr.enumerateLinesUsingBlock(fStr) // okay due to @noescape
|
|
|
|
var x: Int = nsStr.enumerateLinesUsingBlock // expected-error{{'(@noescape (String!) -> Void) -> Void' is not convertible}}
|
|
}
|