Index: tests/concurrency/actors/matrixMultiply.cfa
===================================================================
--- tests/concurrency/actors/matrixMultiply.cfa	(revision d96f7c4f1e2b7dfb521e83969e9704b7e12505da)
+++ tests/concurrency/actors/matrixMultiply.cfa	(revision b8b64c3491eaabb200d19c9745cf2694fcf26af0)
@@ -24,5 +24,5 @@
 }
 
-allocation receive( derived_actor & receiver, derived_msg & msg ) {
+allocation receive( derived_actor &, derived_msg & msg ) {
 	for ( i; yc ) {										// multiply X_row by Y_col and sum products
 		msg.Z[i] = 0;
@@ -41,4 +41,5 @@
 			if ( Processors < 1 ) fallthrough default;
 		} // if
+        fallthrough;
 	  case 4:
 		if ( strcmp( argv[3], "d" ) != 0 ) {			// default ?
@@ -46,4 +47,5 @@
 			if ( xr < 1 ) fallthrough default;
 		} // if
+        fallthrough;
 	  case 3:
 		if ( strcmp( argv[2], "d" ) != 0 ) {			// default ?
@@ -51,4 +53,5 @@
 			if ( xc < 1 ) fallthrough default;
 		} // if
+        fallthrough;
 	  case 2:
 		if ( strcmp( argv[1], "d" ) != 0 ) {			// default ?
@@ -56,4 +59,5 @@
 			if ( yc < 1 ) fallthrough default;
 		} // if
+        fallthrough;
 	  case 1:											// use defaults
 		break;