Index: tests/concurrent/signal/block.cfa
===================================================================
--- tests/concurrent/signal/block.cfa	(revision c7816be39e9fafbbe77688acfe2381ca95e39035)
+++ tests/concurrent/signal/block.cfa	(revision 6dba87551bba313b262acd283b1152e2a09904fe)
@@ -82,5 +82,5 @@
 	if( !is_empty( cond ) ) {
 
-		$thread * next = front( cond );
+		$thread * next = ( $thread * ) front( cond );
 
 		if( ! signal_block( cond ) ) {