Index: trunk/src_plugins/query/fnc_layer_setup.c
===================================================================
--- trunk/src_plugins/query/fnc_layer_setup.c	(revision 33084)
+++ trunk/src_plugins/query/fnc_layer_setup.c	(revision 33085)
@@ -39,6 +39,8 @@
 	/* query result: loc and target */
 	layer_setup_loc_t res_loc;
 	layer_setup_target_t res_target;
+
+	unsigned valid:1; /* 0 on syntax error */
 } layer_setup_t;
 
 void pcb_qry_uninit_layer_setup(pcb_qry_exec_t *ectx)
@@ -222,7 +224,8 @@
 		return ls;
 
 	ls = calloc(sizeof(layer_setup_t), 1);
-	layer_setup_compile_(ectx, ls, s);
+	if (layer_setup_compile_(ectx, ls, s) == 0)
+		ls->valid = 1;
 	htpp_set(&ectx->layer_setup_precomp, (void *)s, ls);
 	return ls;
 }
@@ -420,6 +423,9 @@
 	obj = (pcb_any_obj_t *)argv[0].data.obj;
 	ls = layer_setup_compile(ectx, lss);
 
+	if (!ls->valid)
+		return -1;
+
 rnd_trace("layer_setup: %p/'%s' -> %p\n", lss, lss, ls);
 
 TODO("cache result: obj-ls -> direction (+1 or -1) where it was true or 0 if it was false");