[android] Fix function signature to match usage in libdispatch.

drodriguez · drodriguez · commit 15c6b378acce · 2018-11-06T17:34:30.000-08:00
The function signature in libdispatch doesn't use a dispatch_function_t so compiling for Android should have fail, since the Swift code uses the function without any parameters. See https://github.com/apple/swift-corelibs-libdispatch/blob/master/private/queue_private.h#L345 in which the function is defined with the signatured used in this change.
diff --git a/stdlib/public/SwiftShims/DispatchOverlayShims.h b/stdlib/public/SwiftShims/DispatchOverlayShims.h
@@ -239,7 +239,7 @@ static inline void _swift_dispatch_source_set_registration_handler(
 }
 
 #if defined(__ANDROID__)
-extern void _dispatch_install_thread_detach_callback(dispatch_function_t cb);
+extern void _dispatch_install_thread_detach_callback(void (*cb)(void));
 #endif
 
 static inline void _swift_dispatch_retain(dispatch_object_t object) {

Original file line number	Diff line number	Diff line change
`@@ -239,7 +239,7 @@ static inline void _swift_dispatch_source_set_registration_handler(`
`239`	`239`	`}`
`240`	`240`
`241`	`241`	`#if defined(__ANDROID__)`
`242`		`-extern void _dispatch_install_thread_detach_callback(dispatch_function_t cb);`
	`242`	`+extern void _dispatch_install_thread_detach_callback(void (*cb)(void));`
`243`	`243`	`#endif`
`244`	`244`
`245`	`245`	`static inline void _swift_dispatch_retain(dispatch_object_t object) {`