(nullable_compute): Do not subtract from the returned value of malloc.

[bison.git] / src / derives.h

diff --git a/src/derives.h b/src/derives.h
index a06346a46a2f0c38c57d95914e91f389c8ad2950..df6dde8ae2d58d4d8ccb3ade740f044e067740f7 100644 (file)
--- a/src/derives.h
+++ b/src/derives.h
@@ -1,5 +1,7 @@
 /* Match rules with nonterminals for bison,
-   Copyright 1984, 1989, 2000 Free Software Foundation, Inc.
+
+   Copyright (C) 1984, 1989, 2000, 2001, 2002 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -21,14 +23,15 @@
 #ifndef DERIVES_H_
 # define DERIVES_H_
 
-extern short **derives;
+# include "gram.h"
+
+/* DERIVES[SYMBOL - NTOKENS] points to a vector of the rules that
+   SYMBOL derives, terminated with NULL.  */
+extern rule ***derives;
 
-/* set_derives finds, for each variable (nonterminal), which rules can
-   derive it.  It sets up the value of derives so that derives[i -
-   ntokens] points to a vector of rule numbers, terminated with -1.
-   */
+/* Compute DERIVES.  */
 
-void set_derives PARAMS((void));
-void free_derives PARAMS((void));
+void derives_compute (void);
+void derives_free (void);
 
 #endif /* !DERIVES_H_ */