Fix warnings in DispatchQueue.sync() implementation when using a compiler with SE-0176 support.

ktopley-apple · ktopley-apple · commit 2f22de234d49 · 2017-06-29T16:23:10.000-07:00
diff --git a/src/swift/Queue.swift b/src/swift/Queue.swift
@@ -216,11 +216,13 @@ public extension DispatchQueue {
 	{
 		var result: T?
 		var error: Swift.Error?
-		fn {
-			do {
-				result = try work()
-			} catch let e {
-				error = e
+		withoutActuallyEscaping(work) { _work in
+			fn {
+				do {
+					result = try _work()
+				} catch let e {
+					error = e
+				}
 			}
 		}
 		if let e = error {

Original file line number	Diff line number	Diff line change
`@@ -216,11 +216,13 @@ public extension DispatchQueue {`
`216`	`216`	`{`
`217`	`217`	`var result: T?`
`218`	`218`	`var error: Swift.Error?`
`219`		`- fn {`
`220`		`- do {`
`221`		`- result = try work()`
`222`		`- } catch let e {`
`223`		`- error = e`
	`219`	`+ withoutActuallyEscaping(work) { _work in`
	`220`	`+ fn {`
	`221`	`+ do {`
	`222`	`+ result = try _work()`
	`223`	`+ } catch let e {`
	`224`	`+ error = e`
	`225`	`+ }`
`224`	`226`	`}`
`225`	`227`	`}`
`226`	`228`	`if let e = error {`