Index: tests/concurrent/signal/block.cfa
===================================================================
--- tests/concurrent/signal/block.cfa	(revision c7816be39e9fafbbe77688acfe2381ca95e39035)
+++ tests/concurrent/signal/block.cfa	(revision b81fd952a5ac1533e8228e162fec0eac081416cf)
@@ -82,5 +82,5 @@
 	if( !is_empty( cond ) ) {
 
-		$thread * next = front( cond );
+		$thread * next = ( $thread * ) front( cond );
 
 		if( ! signal_block( cond ) ) {