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* configure.in (WERROR_CFLAGS): Compute it.
[bison.git] / src / nullable.h
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3519ec76 1/* Part of the bison parser generator,
aa7815f5 2 Copyright 2000 Free Software Foundation, Inc.
3519ec76
AD
3
4 This file is part of Bison, the GNU Compiler Compiler.
5
6 Bison is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 Bison is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with Bison; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21#ifndef NULLABLE_H_
22# define NULLABLE_H_
23
24/* A vector saying which nonterminals can expand into the null string.
25 NULLABLE[I - NTOKENS] is nonzero if symbol I can do so. */
26extern char *nullable;
27
28/* Set up NULLABLE. */
29extern void set_nullable PARAMS((void));
30
31/* Free NULLABLE. */
32extern void free_nullable PARAMS((void));
33#endif /* !NULLABLE_H_ */