===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/yacc/error.c,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -r1.11 -r1.12
--- src/usr.bin/yacc/error.c	2009/10/27 23:59:50	1.11
+++ src/usr.bin/yacc/error.c	2011/09/22 16:21:23	1.12
@@ -1,4 +1,4 @@
-/*	$OpenBSD: error.c,v 1.11 2009/10/27 23:59:50 deraadt Exp $	*/
+/*	$OpenBSD: error.c,v 1.12 2011/09/22 16:21:23 nicm Exp $	*/
 /*	$NetBSD: error.c,v 1.4 1996/03/19 03:21:32 jtc Exp $	*/
 
 /*
@@ -57,7 +57,8 @@
 void
 open_error(char *filename)
 {
-    fprintf(stderr, "%s: cannot open source file\n", input_file_name);
+    fprintf(stderr, "%s: cannot open source file %s\n",
+	input_file_name, filename);
     done(2);
 }