Index: tests/concurrent/.expect/cluster.txt
===================================================================
--- tests/concurrent/.expect/cluster.txt	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/.expect/cluster.txt	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -0,0 +1,1 @@
+done
Index: tests/concurrent/cluster.cfa
===================================================================
--- tests/concurrent/cluster.cfa	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/cluster.cfa	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -32,4 +32,4 @@
 		}
 	}
-	return 0;
+	printf( "done\n" );				// non-empty .expect file
 }
Index: tests/concurrent/examples/.expect/datingService.txt
===================================================================
--- tests/concurrent/examples/.expect/datingService.txt	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/examples/.expect/datingService.txt	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -0,0 +1,1 @@
+done
Index: tests/concurrent/examples/datingService.cfa
===================================================================
--- tests/concurrent/examples/datingService.cfa	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/examples/datingService.cfa	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -10,6 +10,6 @@
 // Created On       : Mon Oct 30 12:56:20 2017
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Fri Jun 21 11:32:34 2019
-// Update Count     : 38
+// Last Modified On : Sun Sep 27 15:42:25 2020
+// Update Count     : 40
 //
 
@@ -108,4 +108,6 @@
 		if ( girlck[ boyck[i] ] != boyck[ girlck[i] ] ) abort();
 	} // for
+
+	printf( "done\n" );									// non-empty .expect file
 } // main
 
Index: tests/concurrent/futures/.expect/basic.txt
===================================================================
--- tests/concurrent/futures/.expect/basic.txt	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/futures/.expect/basic.txt	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -0,0 +1,1 @@
+done
Index: tests/concurrent/futures/basic.cfa
===================================================================
--- tests/concurrent/futures/basic.cfa	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/futures/basic.cfa	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -91,3 +91,5 @@
 		}
 	}
+	printf( "done\n" );				// non-empty .expect file
+
 }
Index: tests/concurrent/park/.expect/force_preempt.txt
===================================================================
--- tests/concurrent/park/.expect/force_preempt.txt	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/park/.expect/force_preempt.txt	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -0,0 +1,1 @@
+done
Index: tests/concurrent/park/.expect/start_parked.txt
===================================================================
--- tests/concurrent/park/.expect/start_parked.txt	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/park/.expect/start_parked.txt	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -0,0 +1,1 @@
+done
Index: tests/concurrent/park/force_preempt.cfa
===================================================================
--- tests/concurrent/park/force_preempt.cfa	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/park/force_preempt.cfa	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -57,3 +57,4 @@
 		Waiter waiters[5];
 	}
+	printf( "done\n" );				// non-empty .expect file
 }
Index: tests/concurrent/park/start_parked.cfa
===================================================================
--- tests/concurrent/park/start_parked.cfa	(revision bb6620274a509c003557406a0e5bf61a36ffc572)
+++ tests/concurrent/park/start_parked.cfa	(revision d035cf7ae13a327669561d011224e0ae270d5ee5)
@@ -3,11 +3,12 @@
 thread Parker {};
 void main( Parker & ) {
-      park( __cfaabi_dbg_ctx );
+	park( __cfaabi_dbg_ctx );
 }
 
 int main() {
-      for(1000) {
-            Parker parker;
-            unpark( parker __cfaabi_dbg_ctx2 );
-      }
+	for(1000) {
+		Parker parker;
+		unpark( parker __cfaabi_dbg_ctx2 );
+	}
+	printf( "done\n" );									// non-empty .expect file
 }