Fix data-race detection test to not need @mainactor async main

DougGregor · DougGregor · commit 6839086142ed · 2021-04-16T00:26:39.000-07:00
diff --git a/test/Concurrency/Runtime/data_race_detection.swift b/test/Concurrency/Runtime/data_race_detection.swift
@@ -35,7 +35,7 @@ func launchTask(_ fn: @escaping () -> Void) {
   }
 }
 
-@MainActor func launchFromMainThread() {
+func launchFromMainThread() {
   launchTask(promiseMainThread(onMainActor))
 }
 
@@ -55,7 +55,7 @@ actor MyActor {
 
 @main
 struct Runner {
-  @MainActor static func main() async {
+  static func main() async {
     print("Launching a main-actor task")
     // CHECK: warning: data race detected: @MainActor function at main/data_race_detection.swift:21 was not called on the main thread
     launchFromMainThread()

Original file line number	Diff line number	Diff line change
`@@ -35,7 +35,7 @@ func launchTask(_ fn: @escaping () -> Void) {`
`35`	`35`	`}`
`36`	`36`	`}`
`37`	`37`
`38`		`-@MainActor func launchFromMainThread() {`
	`38`	`+func launchFromMainThread() {`
`39`	`39`	`launchTask(promiseMainThread(onMainActor))`
`40`	`40`	`}`
`41`	`41`
`@@ -55,7 +55,7 @@ actor MyActor {`
`55`	`55`
`56`	`56`	`@main`
`57`	`57`	`struct Runner {`
`58`		`- @MainActor static func main() async {`
	`58`	`+ static func main() async {`
`59`	`59`	`print("Launching a main-actor task")`
`60`	`60`	`// CHECK: warning: data race detected: @MainActor function at main/data_race_detection.swift:21 was not called on the main thread`
`61`	`61`	`launchFromMainThread()`