X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/cc8962bdde81b04aa728aef21e53b4a08a0debfe..HEAD:/tests/glr-regression.at

diff --git a/tests/glr-regression.at b/tests/glr-regression.at
index 711ab7ec..a815008d 100644
--- a/tests/glr-regression.at
+++ b/tests/glr-regression.at
@@ -1,6 +1,6 @@
 # Checking GLR Parsing: Regression Tests           -*- Autotest -*-
 
-# Copyright (C) 2002-2003, 2005-2007, 2009-2013 Free Software
+# Copyright (C) 2002-2003, 2005-2007, 2009-2015 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
@@ -67,12 +67,12 @@ static YYSTYPE exprMerge (YYSTYPE x0, YYSTYPE x1)
   return 0;
 }
 
-const char *input = YY_NULL;
+const char *input = YY_NULLPTR;
 
 int
 main (int argc, const char* argv[])
 {
-  assert (argc == 2);
+  assert (argc == 2); (void) argc;
   input = argv[1];
   return yyparse ();
 }
@@ -304,7 +304,7 @@ MergeRule (int x0, int x1)
 }
 ]AT_YYERROR_DEFINE[
 
-FILE *input = YY_NULL;
+FILE *input = YY_NULLPTR;
 
 int P[] = { P1, P2 };
 int O[] = { O1, O2 };
@@ -1749,3 +1749,33 @@ Cleanup: popping token 'a' ()
 ])
 
 AT_CLEANUP
+
+
+## ----------------------------------------------------------------- ##
+## Predicates.                                                       ##
+##                                                                   ##
+## http://lists.gnu.org/archive/html/bug-bison/2013-10/msg00004.html ##
+## ----------------------------------------------------------------- ##
+
+AT_SETUP([Predicates])
+
+# FIXME: We need genuine test cases with uses of %?.
+
+AT_DATA_GRAMMAR([input.y],
+[[%glr-parser
+%expect-rr 1
+%%
+// Exercise "%?{...}" and "%? {...}".
+widget:
+  %? {new_syntax} "widget" id new_args  { $$ = f($3, $4); }
+| %?{!new_syntax} "widget" id old_args  { $$ = f($3, $4); }
+;
+id:;
+new_args:;
+old_args:;
+%%
+]])
+
+AT_BISON_CHECK([[input.y]])
+
+AT_CLEANUP