jspahrsummers · November 24, 2015 16:11 · Nov 24, 2015
diff --git a/main.m b/main.m
@@ -0,0 +1,15 @@
+#import <Foundation/Foundation.h>
+
+int main (int argc, const char **argv) {
+  @autoreleasepool {
+    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+      dispatch_sync(dispatch_get_main_queue(), ^{
+        NSLog(@"is main thread? %i", (int)[NSThread isMainThread]);
+      });
+    });
+
+    dispatch_main();
+  }
+
+  return 0;
+}
diff --git a/output.txt b/output.txt
@@ -0,0 +1 @@
+2015-11-24 16:08:39.545 main[88889:21446128] is main thread? 0
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		2015-11-24 16:08:39.545 main[88889:21446128] is main thread? 0