named references: fix double free.

[bison.git] / src / named-ref.h

diff --git a/src/named-ref.h b/src/named-ref.h
index 20e92e32759d4d6e98b9ea30294b2234315c1e83..46d9d8d42af8a5d4251c4fd739fbbec14a694cdf 100644 (file)
--- a/src/named-ref.h
+++ b/src/named-ref.h
@@ -1,6 +1,6 @@
 /* Named symbol references for Bison
 
-   Copyright 2009 Free Software Foundation, Inc.
+   Copyright (C) 2009-2011 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -37,6 +37,9 @@ typedef struct named_ref
 /* Allocate a named reference object. */
 named_ref *named_ref_new (uniqstr id, location loc);
 
+/* Allocate and return a copy.  */
+named_ref *named_ref_copy (const named_ref *r);
+
 /* Free a named reference object. */
 void named_ref_free (named_ref *r);