Index: tools/prettyprinter/test.y
===================================================================
--- tools/prettyprinter/test.y	(revision 6b0b624129f6017f7706b516a24a52e382e3a334)
+++ tools/prettyprinter/test.y	(revision 0720749b75e9d25be92e7f3da771c1d96ba17918)
@@ -6,5 +6,6 @@
 
 /* adsad2 */
-
+%locations
+%define parse.error verbose
 %%