Index: src/Concurrency/Keywords.cc
===================================================================
--- src/Concurrency/Keywords.cc	(revision 4f0c520a5fde365036e37cf8af555db88862d73a)
+++ src/Concurrency/Keywords.cc	(revision 2b2f59df137b63b851d91b02383177b1eeb00287)
@@ -405,4 +405,6 @@
 			dtor_decl = decl;
 		else if ( vtable_name.empty() )
+			;
+		else if( !decl->has_body() )
 			;
 		else if ( auto param = isMainFor( decl, cast_target ) ) {