Index: tests/configs/usage.cfa
===================================================================
--- tests/configs/usage.cfa	(revision 10b5970650e2ff3d8e757dd5c91889d466e44fe0)
+++ tests/configs/usage.cfa	(revision c6996028baec2e4b6fcced61f446d6bcf1e4373d)
@@ -108,3 +108,4 @@
 
 // no used
-static int true_main( const char * path, const char * env[]) { return 0; }
+static int true_main( const char *, const char * []) { return 0; }
+__attribute__((unused)) static void check_main(const char *);